[0001]
　The present invention is a nonwoven laminate, stretch nonwoven laminate, textile, relates to absorbent articles and sanitary mask.
Background technique
[0002]
　Recently, nonwoven fabrics are widely used in various applications because of excellent breathability and flexibility. Therefore, the non-woven fabric, various characteristics together sought in accordance with the application, the improvement of its properties is required.
[0003]
　For example, disposable diapers, sanitary materials such as sanitary napkins, nonwoven fabric used for the base fabric or the like of poultice materials are water resistant and is required to be and excellent moisture permeability. Also, depending portions used is also required to have stretchability and bulkiness.
[0004]
　One method for imparting elasticity to a nonwoven fabric, a method (e.g., see JP Hei 7-503502) using a thermoplastic elastomer as a raw material of spunbonded nonwoven fabric, a method of using a low-crystalline polypropylene (for example, Japanese open reference and JP 2009-79341 JP 2009-62667) have been proposed.
[0005]
　Patent Document 2 or Patent Document 3, in order to improve the stickiness, etc. of spunbonded nonwoven fabric, the low crystalline polypropylene, it is proposed to add a highly crystalline polypropylene or release agent. WO 2012/070518, a laminate of a nonwoven fabric containing low crystalline polypropylene and extensible spunbonded nonwoven fabric is disclosed.
Summary of the Invention
Problems that the Invention is to Solve
[0006]
　JP-A-2009-62667 discloses or JP 2009-79341 JP method according to occur when producing the spunbonded nonwoven fabric with a low-crystalline polypropylene, the rotary device in the apparatus including the embossing step to prevent adhesion to the site of contact with the other of the nonwoven fabric, it is necessary to increase the addition amount of the high crystalline polypropylene or the releasing agent to the low crystalline polypropylene, as a result, the residual strain of the resulting spunbonded nonwoven fabric is larger now, there is a tendency that elasticity is poor. In the method described in WO 2012/070518, but retain the stretch by laminating the low crystalline polypropylene and extensible spunbonded nonwoven fabric, a further improvement in stretch it is strongly required .
[0007]
　Moreover, disposable diapers, sanitary materials such as sanitary napkins, in applications such as base cloth for poultice materials, are required to be extended at a stress so that it can be mounted with a small force is small, and the recovery stress at as not to shift when wearing it has sought greater. That is, in the above applications, not only to reduce the value of the stretch properties (the ratio of elongation at the stress / recovery during stress), reducing the absolute value of the elongation at the stress, by increasing the absolute value of the recovery time of stress there is a demand.
[0008]
　Moreover, disposable diapers, in the manufacturing process of sanitary materials such as sanitary napkins, there is attaching the nonwoven fabric together by heat sealing. In order to speed up the production, an attempt to shorten the seal time in a heat-sealing step, a problem that the seal strength is lowered. Increasing the seal temperature, a problem that the seal portion is firmly occurs. While maintaining this for soft texture, heat-sealable non-woven fabric at a low temperature as much as possible there is a strong demand.
[0009]
　In view of the above problems, it is excellent in moldability during production, less stickiness, nonwoven fabric laminate which is excellent in stretchability and low-temperature heat sealing property, as well as stretchable nonwoven laminate using the same, textiles, absorbent and to provide an article and sanitary mask.
Means for Solving the Problems
[0010]
　The means for solving the above problems includes the following embodiments.
<1> and the following (a) ~ elastic nonwoven comprising low crystalline polypropylene satisfying (f), disposed on at least one surface side of the elastic nonwoven fabric, the long fiber of the thermoplastic elastomer (A), the thermoplastic elastomer (A ) (the long fiber B), but 10% to 90% by weight: the proportion of 90 wt% to 10 wt% (((a) :( B) other than the thermoplastic resin, provided that (a) + (B) = 100% by mass to) and the mixed fiber spun bonded nonwoven fabric that are included in the a nonwoven
laminate. (a) [mmmm] = 20 ~ 60
mol% (b) [rrrr] / (1-[mmmm] ) ≦
0.1 (c) [rmrm]> 2.5
mol% (d) [mm] × [rr] / [mr] 2 ≦ 2.0
(e) a weight average molecular weight (Mw) = 10,000 ~ 200,000
(f) molecular weight distribution (Mw / Mn)
<4 (a) ~ (d) , [Mmmm] is the meso pentad fraction, [rrrr] is a racemic pentad fraction, [rmrm] is racemic meso racemic meso pentad fraction, [mm], [rr] and [mr] is is a triad fractions, respectively.
[0011]
<2> long fiber of the thermoplastic resin (B), the nonwoven fabric laminate according to the maximum elongation at the time of the spunbonded nonwoven fabric is not less than 50% <1>.
[0012]
<3> The thermoplastic elastomer (A) is a thermoplastic polyurethane elastomer <1> or nonwoven laminate according to <2>.
[0013]
<4> The thermoplastic polyurethane elastomer, and a differential scanning calorimeter (DSC) solidification starting temperature measured by the 65 ° C. or higher, and a particle size distribution measuring apparatus equipped with a 100μm aperture based on a pore electrical resistance method in nonwoven laminate according to the measurement number of particles of dimethylacetamide solvent insoluble content is 3 million / g or less that is <3>.
[0014]
<5> The thermoplastic polyurethane elastomer is a thermoplastic polyurethane elastomer satisfying the following relationship (I) <3> or nonwoven laminate according to <4>.
　　a / (a + b) ≦ 0.8 (I)
(in formula, a represents the sum of heat of fusion determined from the endothermic peak existing in the range of 90 ° C. ~ 140 ° C. as measured by DSC, b is DSC by representing the sum of the heat of fusion calculated from an endothermic peak in the range of 220 ° C. or less beyond 140 ° C. to be measured.)
[0015]
<6> The thermoplastic resin (B) is a polyolefin <1> to non-woven fabric laminate according to any one of <5>.
[0016]
<7> The thermoplastic resin (B) is a propylene polymer <1> to non-woven fabric laminate according to any one of <6>.
[0017]
<8> The thermoplastic resin (B) is composed of a propylene polymer 99 wt% to 80 wt% high density polyethylene 1% to 20% by weight <1> according to any one of to <7> non-woven fabric laminate.
[0018]
<9> <1> to stretching to stretch nonwoven laminate obtained a non-woven fabric laminate according to any one of <8>.
[0019]
<10> <1> to textiles comprising stretchable nonwoven laminate according to the nonwoven fabric laminate or <9> according to any one of <8>.
[0020]
Absorbent article comprising the elastic nonwoven fabric laminate according to <11> <1> to <8> nonwoven laminate or according to any one of <9>.
[0021]
<12> <1> to sanitary mask comprising a stretchable nonwoven fabric laminate according nonwoven fabric laminate or <9> according to any one of <8>.
Effect of the invention
[0022]
　According to the present invention, excellent moldability during production, less stickiness, nonwoven fabric laminate which is excellent in stretchability and low-temperature heat sealing property, as well as stretchable nonwoven laminate using the same, textiles, absorbent articles and hygiene mask is provided.
BRIEF DESCRIPTION OF THE DRAWINGS
[0023]
It is a schematic diagram of FIG. 1 the gear drawing device.
DESCRIPTION OF THE INVENTION
[0024]
　It will be described in detail below embodiments of the present invention. However, the present invention is not limited to the following embodiments. In the following embodiments, the components (element steps including also), especially otherwise stated, or except the case considered in principle clearly essential, not essential. The same applies to the numerical value and the range, are not intended to limit the present invention.
[0025]
　The term "process" used herein includes not only separate steps, even if that can not be clearly distinguished from other processes the objective of the process if it is achieved, it is included in this term. The numerical range expressed by using "to" in the specification are indicative of the range including the respective minimum and maximum values ​​of the numerical values ​​described before and after "to". The content of each component in the compositions herein, when substances corresponding to the component in the composition is present more, unless otherwise specified, the plurality of kinds of substances present in the composition It means of the total amount.
[0026]

　nonwoven fabric laminate of the present invention,
　the low crystalline polypropylene satisfying the following (a) ~ (f) an elastic nonwoven fabric comprising (hereinafter, simply referred to as "low crystalline polypropylene"), of the elastic nonwoven fabric disposed on at least one side, and the long fiber of the thermoplastic elastomer (a), the long fiber of the thermoplastic elastomer (a) other than the thermoplastic resin (B), but 10% to 90 mass%: 90 mass% proportion of 10% by weight ((a) :( B), provided that (a) + (B) = 100 wt% to) the mixed fiber spunbonded non-woven fabric contained in (hereinafter, simply "mixed fiber spun bonded nonwoven fabric" also referred to) as a nonwoven fabric laminate having a.
(A) [mmmm] = 20 ~ 60 mol%
(b) [rrrr] / (1-[mmmm]) ≦
0.1 (c) [rmrm]> 2.5
mol% (d) [mm] × [ rr] / [mr] 2 ≦ 2.0
(e) a weight average molecular weight (Mw) = 10,000 ~ 200,000
(f) molecular weight distribution (Mw /
Mn) <4 in (a) ~ (d), [ mmmm] is the meso pentad fraction, [rrrr] is a racemic pentad fraction, [rmrm] is racemic meso racemic meso pentad fraction, [mm], [rr] and [mr] each triad it is a fraction.
[0027]
　Nonwoven laminate of the present invention, at least because on one side the mixed fiber spunbonded non-woven fabric is disposed, the adhesion of the nonwoven fabric laminate of the members such as various rotating equipment in the apparatus to be used in the embossing step or the like of the elastic nonwoven fabric There can be prevented and excellent moldability. Also, since the spunbonded nonwoven fabric is disposed on at least one surface side of the elastic nonwoven fabric comprising a specific mixed fibers, less stickiness, excellent stretchability. Further non-woven fabric laminate of the present invention has excellent characteristics in low-temperature heat sealability.
[0028]
　Nonwoven laminate of the present invention, the surface on the side in contact with the rotating device associated with the nonwoven fabric manufacturing apparatus preferably has at least the mixed fiber spunbonded non-woven fabric is arranged structures, mixed fiber spun on both side of the elastic nonwoven and more preferably has a bonded nonwoven is arranged structures.
[0029]
　Nonwoven laminate of the present invention is usually a basis weight of 360 g / m 2 or less, preferably 240 g / m 2 or less, more preferably 150 g / m 2 or less, more preferably 120 g / m 2 ~ 15 g / m 2 in the range of. Basis weight can be measured by the method used in Examples described later.
[0030]
　Composition ratio of the elastic nonwoven fabric and the mixed fiber spunbonded non-woven fabric may be appropriately determined depending on various applications. Typically elastic nonwoven: the mixed fiber spunbonded nonwoven fabric (basis weight ratio), 10: 90-90: 10 in the range of, preferably 20: 80-80: in the range of 20, more preferably 20: 80-50: in the range of 50. When the elastic nonwoven fabric (or mixed fiber spunbonded nonwoven fabric) is present 2 or more, a basis weight of the sum of 2 or more elastic nonwoven (or mixed fiber spun bonded nonwoven fabric).
[0031]
　Nonwoven laminate of the present invention is usually at least one direction of the residual strain is 25% or less, preferably not more than 22%. When at least one direction of the residual strain is less than 25%, stretchability is good. Residual strain can be measured by the method used in Examples described later.
[0032]
　Nonwoven laminate of the present invention is usually at least maximum load elongation in one direction is 50% or more, preferably 100% or more. Maximum load elongation can be measured by the method used in Examples described later.
[0033]
　Nonwoven laminate of the present invention, when a 60g basis weight, more preferably from 50% elongation at stress is preferably at most 1.5 N / 50 mm, is 1.3 N / 50 mm or less, 1.2 N / and more preferably 50mm or less. Further preferably 50% recovery time of stress is 0.30 N / 50 mm or more, more preferably 0.32 N / 50 mm or more, more preferably 0.35 N / 50 mm or more. Incidentally, at the time of 50% elongation stress and 50% recovery time of stress, unlike the stretch properties (at the time of 50% elongation stress / 50% recovery during stress), depending on the basis weight of the nonwoven fabric laminate was changed significantly greater the weight per unit area there to tend.
[0034]
　Nonwoven laminate of the present invention is preferably stretch properties (at the time of 50% elongation stress / 50% recovery time of stress) is 3.0 or less, more preferably 2.9 or less, 2.8 or less there is further preferable. Stretch characteristics the more excellent a smaller value. Stretch properties can be measured by the method used in Examples described later.
[0035]
　Nonwoven laminate of the present invention is preferably low-temperature heat sealing property is 10 N / 50 mm or more, more preferably 12N / 50 mm or more, more preferably 15N / 50 mm or more. Low-temperature heat-sealing properties can be measured by the method used in Examples described later.
[0036]

　elastic nonwoven fabric constituting the non-woven fabric laminate of the present invention includes a low crystalline polypropylene satisfying described later (a) ~ (f) (hereinafter, simply referred to as a low crystalline polypropylene). The purpose effectively from the point of view of achieving the present invention, it is preferred that the ratio of the low crystalline polypropylene in the elastic nonwoven is 60 mass% or more, more preferably 70 mass% or more, 80 wt% or more still more preferably.
[0037]
　The form of an elastic nonwoven, for example, core-sheath type composite fibers, composite fibers, such as a parallel type composite fiber (side-by-side type composite fiber), a mixed fiber. Elastic nonwoven may include a resin other than the low crystalline polypropylene. As the low crystalline polypropylene than of the resin constituting the elastic nonwoven fabric is not particularly intended to define, in terms of stretch properties, it is preferable to use a thermoplastic elastomer. As the thermoplastic elastomer, it is possible to use various known thermoplastic elastomers, it may be used in combination of two or more kinds of thermoplastic elastomers. As the thermoplastic elastomer, for example, polystyrene - polybutadiene - polystyrene block copolymer (SBS and called), polystyrene - polyisoprene - polystyrene block copolymer (SIS and called), polystyrene is a hydrogenated product thereof - polyethylene butylene - polystyrene block copolymers (SEBS and designation), and polystyrene - polyethylene propylene - typified by polystyrene block copolymer (SEPS and called), a polymer block composed of at least one aromatic vinyl compounds such as styrene, at least one styrenic elastomers typified by butadiene or a polymer block composed of a conjugated diene compound such as isoprene, comprising a block copolymer, or a hydrogenated product ; High crystalline aromatic polyester and the amorphous aliphatic polyester elastomers typified constructed block copolymer and a polyether; glass transition temperature polyamide and amorphous refractory crystalline ( polyamide elastomers tg) is represented constructed block copolymer from a lower polyether or polyester; hard segment is composed of polyurethane, the soft segment is polycarbonate-based polyol, polyether-based polyol, caprolactone-based polyester or adipate polyester thermoplastic polyurethane elastomer (TPU) typified constructed block copolymer from the like; noncrystalline or low-crystalline ethylene · alpha-olefin random copolymer, propylene · alpha-olefin random copolymer Propylene-ethylene-alpha-olefin or using random copolymer, etc. alone or in the noncrystalline or low crystalline random copolymer and a propylene homopolymer and whether mixing or the noncrystalline or low and random copolymers of a crystalline, propylene and copolymers with small amounts of α- olefins, crystalline polyolefin obtained by mixing a polyolefin elastomer such as high density polyethylene in density polyethylene, polyvinyl chloride elastomers; and fluorine-based elastomer.
[0038]
　The elastic nonwoven herein, refers to a non-woven fabric having a property of recovering the elasticity the stress is released after stretching.
[0039]
　Elastic nonwoven can be produced by various known methods. Specifically, for example, spunbonding, meltblowing, flash spinning method, and the like. Among elastic nonwoven, meltblown nonwoven fabric obtained by spun bond nonwoven fabric or melt-blown obtained by spun bond method is preferable.
[0040]
　Elastic nonwoven, usually having a basis weight 120 g / m 2 or less, preferably 80 g / m 2 or less, more preferably 50 g / m 2 or less, more preferably 40 g / m 2 ~ 2 g / m 2 of It is in the range.
　Fibers constituting the elastic nonwoven are typically fiber diameter is at 50μm or less, preferably 40μm or less, more preferably 30μm or less.
[0041]
Low crystalline polypropylene]
　low crystalline polypropylene is a polymer satisfying the following requirements (a) ~ (f).
　(A) [mmmm] = 20 ~ 60 mol%:
　If the mesopentad fraction of the low crystalline polypropylene [mmmm] is 20 mol% or more, the occurrence of stickiness suppression, if it is 60 mol% or less, crystallization since no time is too high, the elastic recovery properties are improved. The mesopentad fraction [mmmm] is preferably from 30 to 50 mol%, more preferably 40 to 50 mol%.
[0042]
　Meso pentad fraction [mmmm], the racemic pentad fraction [rrrr] and the racemic meso racemic meso pentad fraction to be described later [rmrm] is TA Zanberi (A.Zambelli) or the like by "Macromolecules, 6, 925 (1973) conforming to the method proposed in " 13 meso fraction in pentad units in the polypropylene molecular chain as measured by the signal of the methyl groups of the C-NMR When the meso pentad fraction [mmmm] is increased, stereoregularity becomes high. Further, triad fraction described later [mm], [rr] and [mr] is also calculated by the above method.
[0043]
Incidentally,　13 measurements of C-NMR spectra, TA Zanberi (A.Zambelli) or the like by "Macromolecules, 8, 687 (1975)" according to the attribution of the proposed peak, be carried out by the following apparatus under the following conditions it can.
[0044]
Apparatus: JEOL Ltd. JNM-EX400 type 13 C-NMR apparatus
method: Proton fully decoupling method
Concentration: 220 mg / ml
solvent: 90:10 (volume ratio) of 1,2,4-trichlorobenzene and heavy benzene a mixed solvent
temperature: 130 ° C.
pulse width: 45 °
pulse repetition time: 4 seconds
integration: 10000 times
[0045]
[Formula]
M = m / S × 100
R = gamma / S ×
100 S = Pbetabeta + Parufabeta + Parufaganma
S: signal intensity of the side chain methyl carbon atoms of the total propylene units
Pbetabeta: 19.8 ~ 22.5 ppm
Parufabeta: 18.0 ~ 17.5Ppm
Parufaganma: 17.5 ～ 17.1Ppm
Ganma: racemic pentad chain: 20.7 ～ 20.3Ppm
M: mesopentad chain: 21.7 ~ 22.5ppm
[0046]
(B) [rrrr] / ( 1- [mmmm]) ≦ 0.1
　The value of [rrrr] / [1-mmmm ] is determined from the fraction of the pentad unit, regularity distribution of the low crystalline polypropylene is an index indicating the uniformity. If this value increases, it becomes a mixture of high regularity polypropylene and atactic polypropylene as conventional polypropylene produced using existing catalyst systems, causing stickiness.
　In the low crystalline polypropylene, [rrrr] / (1- [ mmmm]) is the is 0.1 or less, tackiness in the resulting elastic nonwoven is suppressed. From this viewpoint, [rrrr] / (1- [ mmmm]) is preferably 0.05 or less, more preferably 0.04 or less.
[0047]
(C) [rmrm]> 2.5 mol%
　low crystalline racemic meso racemic meso fraction of polypropylene [rmrm] is the is a value greater than 2.5 mol%, an increase in randomness of the low crystalline polypropylene , it is further improved elastic recovery of the elastic nonwoven. [Rmrm] is preferably 2.6 mol% or more, more preferably 2.7 mol% or more. The upper limit is usually about 10 mol%.
[0048]
(D) [mm] × [rr] / [mr] 2 ≦
　2.0 [mm] × [rr] / [mr] 2 indicates the randomness index of the low crystalline polypropylene, this value is 2. If it is 0 or less, the elastic nonwoven sufficient elastic recovery property is obtained, and stickiness is suppressed. [Mm] × [rr] / [mr] 2 has randomness is higher closer to 0.25. From the standpoint of obtaining the sufficient elastic recovery property, [mm] × [rr] / [mr] 2 is preferably 1.8 or less than 0.25, more preferably 0.5 to 1.5 is there.
[0049]
(E) a weight average molecular weight (Mw) = 10,000 ~ 200,000
　the weight average molecular weight in the low crystalline polypropylene is at least 10,000, and remains moderate not too low a viscosity of the low crystalline polypropylene Therefore, yarn breakage during production of the elastic nonwoven can be suppressed. Further, the weight average molecular weight is 200,000 or less, the viscosity of the low crystalline polypropylene is not too high to improve the spinning property. The weight average molecular weight is preferably 30,000 to 150,000, more preferably from 50,000 to 150,000. It will be described later method of measuring the weight average molecular weight.
[0050]
(F) Molecular weight distribution (Mw / Mn) <4
　in the low crystalline polypropylene, the molecular weight distribution (Mw / Mn) is less than 4, the occurrence of stickiness of the elastic nonwoven is suppressed. The molecular weight distribution is preferably 3 or less.
　The weight average molecular weight (Mw) by gel permeation chromatography (GPC) method, a weight average molecular weight in terms of polystyrene measured by the following apparatus under the following conditions, the molecular weight distribution (Mw / Mn), in a similar manner is a value calculated from the measured number-average molecular weight (Mn) and the weight average molecular weight (Mw).
[0051]
[GPC Measurement Apparatus]
Column: TOSO GMHHR-H (S) HT
Detector: for liquid chromatogram RI detector WATERS 150C
[Measurement conditions]
Solvent: 1,2,4-trichlorobenzene
Measurement temperature: 145 ° C.
Flow rate: 1. 0 ml / min
sample concentration: 2.2 mg / ml
injection amount: 160 [mu] l
standard curve: Universal calibration
analysis program: HT-GPC (Ver.1.0)
[0052]
　Low crystalline polypropylene, it is preferable to satisfy the following additional (g).
With (g) a differential scanning calorimeter (DSC), is observed at the highest temperature side of the obtained melting endothermic curve by heating at 10 ° C. / min after holding for 5 minutes under -10 ° C. nitrogen atmosphere that peak melting point which is defined as the peak top of the (Tm-D) is 0 ℃ ~ 120 ℃.
[0053]
　When the low crystalline polypropylene melting point (Tm-D) is 0 ℃ or more, the occurrence of stickiness of the elastic nonwoven fabric is suppressed, if it is 120 ° C. or less, sufficient elastic recovery property is obtained. From this viewpoint, the melting point (Tm-D) is more preferably from 0 ° C. ~ 100 ° C., more preferably from 30 ℃ ~ 100 ℃.
[0054]
　Incidentally, the melting point (Tm-D), differential scanning calorimeter (Perkin Elmer, DSC-7) used, after the sample 10mg was held 5 minutes at -10 ° C. under a nitrogen atmosphere, 10 ° C. / min it can be obtained as a peak top of the peak in the observed highest temperature side of the obtained melting endothermic curve by raising the temperature.
[0055]
　Low crystalline polypropylene, for example, can be synthesized using a homogeneous catalyst referred to as WO2003 / 087,172 discloses as described in the so-called metallocene catalyst.
[0056]
　Low crystalline polypropylene, without impairing the object of the present invention, as optional components, antioxidants, heat stabilizers, weathering stabilizers, antistatic agents, slip agents, antifogging, lubricants, dyes, pigments, natural oils, synthetic oils, may include various known additives such as wax.
[0057]
　
　The mixed fiber spunbonded non-woven fabric that constitutes the non-woven fabric laminate of the present invention, the long fibers of the long fiber of the thermoplastic elastomer (A) (A) other than the thermoplastic resin (B), but 10 to 90 wt%: is 90 to 10 mass% ratio (((a) :( B) , provided that (a) + (B) = 100 wt% to) mixed fiber spunbonded nonwoven fabric that are included in .
[0058]
　From the viewpoint of stretchability and flexibility, it is preferable that long fibers the proportion of the thermoplastic elastomer in the mixed fiber spunbonded non-woven fabric (A) is at least 20 wt%, more preferably at least 30 mass%. From the viewpoint of processability (resistance to stickiness), more it is preferred that the proportion of long fibers of the thermoplastic elastomer in the mixed fiber spunbonded non-woven fabric (A) is 70 mass% or less, 60 wt% or less preferable.
[0059]
　Mixed-fiber thermoplastic elastomer to form the spunbonded nonwoven fiber diameter (average value) of the long fibers of the long fibers and thermoplastic resin (B) of (A) is usually at 50μm or less, preferably be 40μm or less , more preferably 30μm or less. The fiber diameter of the long fibers of the long fiber and the thermoplastic resin of the thermoplastic elastomer (A) (B) may be the same or different.
[0060]
　The mixed fiber spun bonded nonwoven fabric is generally a stack sum in terms of flexibility and breathability in sanitary material applications such as diapers, the basis weight is 120 g / m 2 or less, preferably 80 g / m 2 or less, more preferably 50 g / m 2 or less, more preferably 40 g / m 2 ~ 15 g / m 2 in the range of.
[0061]
[Thermoplastic elastomer (A)]
　The thermoplastic elastomer (A), it is possible to use various known thermoplastic elastomers, be used singly, it is used in combination of two or more thermoplastic elastomers good.
[0062]
　The thermoplastic elastomer (A), styrene elastomer, polyester elastomer, polyamide elastomer, thermoplastic polyurethane elastomer, polyolefin elastomer, vinyl chloride elastomer, fluoroelastomer, and the like.
[0063]
　Styrene-based elastomer, a polystyrene - polybutadiene - polystyrene block copolymer (SBS), polystyrene - polyisoprene - polystyrene block copolymer (SIS), polystyrene is a hydrogenated product thereof - polyethylene butylene - polystyrene block copolymer (SEBS), and polystyrene - polyethylene propylene - is an elastomeric typified by polystyrene block copolymer (SEPS), a polymer block composed of at least one aromatic vinyl compound such as styrene, at least one of butadiene, a conjugated diene and isoprene polymer and block composed of compounds, a block copolymer or its hydrogenated product consists. Styrene elastomer is, for example, KRATON polymer (trade name, manufactured by Shell Chemical Co.), SEPTON (trade name, manufactured by Kuraray Co.), TUFTEC (trade name, manufactured by Asahi Chemical Industry Co.), Reosutoma (trade name , it is sold under the trade names such as Riken Technos Co., Ltd.).
[0064]
　Polyester elastomers are elastomers typified constructed block copolymer from a highly crystalline aromatic polyesters, and aliphatic polyether amorphous. Polyester elastomers are, for example, HYTREL (trade name, E. I.. DuPont Co.), Pelprene sold under the trade names such as (trade name, manufactured by Toyobo Co., Ltd.).
[0065]
　Polyamide elastomer has a high melting point of the polyamide in the crystalline and elastomeric typified constructed block copolymer amorphous and low polyether or polyester glass transition temperature (Tg) at from. Polyamide elastomer, for example, PEBAX (trade name, ATOFINA Japan KK) sold under the trade names such as.
[0066]
　Thermoplastic polyurethane based elastomer is composed hard segment of polyurethane is an elastomeric soft segment is represented constructed block copolymer polycarbonate polyol, polyether polyol, caprolactone based polyester, the adipate polyester.
[0067]
　Polyolefin elastomers, elastomer comprising amorphous or low-crystalline ethylene-alpha-olefin random copolymer, propylene-alpha-olefin random copolymer, from single and propylene-ethylene-alpha-olefin random copolymer or, the amorphous or low crystalline random copolymer and a propylene homopolymer, a copolymer of propylene and a small amount of α- olefin, high density polyethylene, such as medium density polyethylene with the crystalline polyolefin mixture is an elastomer which is material. Polyolefin elastomers, e.g., TAFMER (trade name, manufactured by Mitsui Chemicals Co., Ltd.), an ethylene - octene copolymer Engage (trade name, manufactured by DuPont Dow Elastomers Inc.), CATALLOY including a crystalline olefin copolymer ( trade name, manufactured by Montell (Ltd.)), Vistamaxx (trade name, are sold under the trade name of Exxon Mobil Chemical Co., Ltd.), and the like.
[0068]
　Vinyl chloride elastomer, for example, Reoniru (trade name, manufactured by Riken Technos Corporation), sold under the trade names of Posumiru (trade name, Shin-Etsu Polymer Ltd. Co.).
[0069]
　Among these thermoplastic elastomers, thermoplastic polyurethane elastomers and polyolefin elastomers are preferred, from the viewpoint of stretchability and processability, the thermoplastic polyurethane elastomer is more preferable.
[0070]
(Thermoplastic polyurethane elastomer)
　Among the thermoplastic polyurethane elastomer, the solidification starting temperature of 65 ° C. or more, preferably 75 ° C. or higher, most preferably 85 ° C. or more thermoplastic polyurethane elastomer. Further, it is preferable that the solidification start temperature is below 195 ° C.. Here, the solidification starting temperature is a value measured using a differential scanning calorimeter (DSC), a thermoplastic polyurethane elastomer was raised to 230 ° C. at 10 ° C. / min and held for 5 minutes at 230 ° C. after a starting temperature of an exothermic peak derived from solidification of the thermoplastic polyurethane elastomer produced when the temperature is decreased at 10 ° C. / min. Molding the solidification starting temperature is 65 ° C. or higher, fusion of fibers in obtaining the mixed fiber spunbonded non-woven fabric, yarn breakage, it is possible to suppress molding defects such as resin mass, during hot embossing been mixed fiber spun bonded nonwoven fabric can be prevented from winding around the embossing roller. Also, less stickiness of the resulting mixed fiber spun bonded nonwoven fabric, garments, sanitary materials, is suitably used as a material in contact with the skin, such as sports material. On the other hand, the solidification starting temperature by the 195 ° C. or less, it is possible to improve the moldability. Incidentally, the solidification starting temperature of the formed fiber tends to be higher than the solidification starting temperature of the thermoplastic polyurethane elastomer used for this.
[0071]
　In order to adjust the solidification starting temperature of the thermoplastic polyurethane elastomer above 65 ° C., the polyol used as a material for the thermoplastic polyurethane elastomer, as the isocyanate compound, and chain extender, selected to have an optimum chemical structure, respectively as well as, it is necessary to adjust the amount of the hard segment. Here, the hard segment amount to the combined weight of the thermoplastic isocyanate compound used in the preparation of the polyurethane elastomer and the chain extender, a polyol, multiplied by 100 and divided by the total amount of isocyanate compound and a chain extender mass is the percentage (by mass%) value. Hard segment amount is preferably 20 mass% to 60 mass%, more preferably from 22 wt% to 50 wt%, more preferably from 25 wt% to 48 wt%.
[0072]
　Thermoplastic polyurethane based elastomer is preferably 3 million number of particles of the polar solvent-insoluble matter of the thermoplastic polyurethane elastomer 1 g (3 million / g) or less, more preferably below 2.5 million / g There, more preferably not more than 2 million / g. Here, the polar solvent insolubles thermoplastic polyurethane elastomer, which is primarily a massive object such as fish eye and gel that occurs during the manufacture of the thermoplastic polyurethane based elastomer. The cause of occurrence of polar solvent-insoluble component, components derived from hard segment agglomerates of the thermoplastic polyurethane elastomer, the hard and / or soft segment is allophanate bond component crosslinked by biuret bond or the like, thermoplastic polyurethane raw material constituting the elastomer component and the like caused by a chemical reaction between the raw materials.
[0073]
　Number of particles of the polar solvent-insoluble content, thermoplastic polyurethane elastomer dimethylacetamide solvent (hereinafter, abbreviated as "DMAC".) The insolubles when dissolved in a particle size distribution measuring apparatus utilizing a pore electric resistance method to a value measured by attaching a 100μm aperture. When mounting the 100μm aperture, it is possible to measure the number of particles of 2 [mu] m ~ 60 [mu] m uncrosslinked polystyrene.
[0074]
　By the number of particles of a polar solvent-insoluble component below 3 million / g, in the solidification starting temperature range of the thermoplastic polyurethane elastomer, increasing distribution of fiber diameter, the occurrence of problems yarn breakage or the like during the spinning it is possible to suppress more. Less thermoplastic polyurethane elastomer polar solvent-insoluble content, after performing polyol, the polymerization reaction of the isocyanate compound and the chain extender, can be obtained by filtration.
[0075]
　From the viewpoint of suppressing contamination and generation of yarn breakage of bubbles into a strand during the molding of the nonwoven fabric of a large spunbond forming machine, it is preferable that water content of the thermoplastic polyurethane elastomer is less than 350 ppm, at 300ppm or less more preferably in, and still more preferably 150ppm or less.
[0076]
　From the viewpoint of stretchability, the thermoplastic polyurethane based elastomer is measured by differential scanning calorimetry (DSC), the sum of heat of fusion determined from the endothermic peak peak temperature is in the range of 90 ℃ ~ 140 ℃ (a) If the sum of heat of fusion peak temperature is determined from an endothermic peak in the range of 220 ° C. or less exceed 140 ° C. and (b), but preferably satisfies the following relationship formula (I), the following formula (II) it is more preferable to satisfy the relationship, it is further preferable to satisfy the relationship of formula (III).
　a / (a + b) ≦ 0.8
　(I) a / (a + b) ≦ 0.7
　(II) a / (a + b) ≦ 0.55 (III)
[0077]
　Here, "a / (a ​​+ b)" is the heat of fusion ratio of the hard domain of the thermoplastic polyurethane elastomer (unit:%) refers to. When heat of fusion ratio of the hard domain of the thermoplastic polyurethane based elastomer is 80% or less, fibers, particularly fibers and strength and stretchability of the nonwoven fabric in the mixed fiber spunbonded non-woven fabric is improved. In the present invention, the lower limit of the heat of fusion ratio of the hard domain of the thermoplastic polyurethane elastomer is preferably about 0.1%.
[0078]
　Thermoplastic polyurethane-based elastomer, a temperature 200 ° C., a shear rate of 100 sec -1 preferably has a melt viscosity at the conditions of a 100Pa · s ~ 3000Pa · s, more preferably 200Pa · s ~ 2000Pa · s, 1000Pa and even more preferably · s ~ 1500Pa · s. Here, the melt viscosity is Capillograph is a value measured at (Toyo Seiki Co., Ltd., a nozzle length 30 mm, the use a diameter of 1 mm).
[0079]
　Such thermoplastic polyurethane elastomer having properties, for example, can be obtained by the production method described in JP-A-2004-244791.
[0080]
　The mixed fiber spun bonded nonwoven fabric which is formed using a thermoplastic polyurethane elastomer is excellent in tactile sensation, it can be suitably used in applications that contact the skin, such as a sanitary material. Also, a filter installed inside the extruder is less likely to clog to filter impurities, adjusting the equipment, because the maintenance frequency is lower, it preferred industrially.
[0081]
(Polyolefin elastomer)
　Among the polyolefin elastomer is preferably amorphous or low crystalline polyolefin based elastomer, amorphous or low-crystalline ethylene and propylene, 1-butene, 1-pentene, 1-hexene, 4 - methyl-1-pentene, 1-heptene, 1-octene, ethylene · alpha-olefin copolymer is a copolymer of one or more alpha-olefins having a carbon number such as 1-decene 3-20, and amorphous or low-crystalline propylene and ethylene, 1-butene, 1-pentene, 1-hexene, 4-methyl-1-pentene, 1-heptene, 1-octene, the carbon number of 1-decene is 2 to 20 (except for 3 carbon atoms) propylene · alpha-olefin copolymer is a copolymer of one or more alpha-olefins is more preferred. The amorphous or low crystalline polyolefin based elastomers, for example, crystallinity as measured by X-ray diffraction is a polyolefin-based elastomer is 20% or less (including 0%).
[0082]
　Specific examples amorphous or low-crystalline ethylene-alpha-olefin copolymer, ethylene-propylene random copolymer, can be exemplified ethylene-1-butene random copolymer. The ethylene · alpha-olefin copolymer has a melt flow rate (MFR) is not particularly limited as long as it has spinnability, usually, MFR (ASTM D1238 190 ℃, 2160g load) normally, MFR (ASTM D1238 230 ℃, 2160g load) 1 g / 10 min ~ 1000 g / 10 min, preferably 5 g / 10 min ~ 500 g / 10 min, more preferably in the range of 10 g / 10 min ~ 100 g / 10 min.
[0083]
　Specific examples amorphous or low-crystalline propylene-alpha-olefin copolymer, propylene-ethylene random copolymer, propylene-ethylene-1-butene random copolymer and propylene-1-butene random copolymerization it can be exemplified coalescence. Also, the MFR of the propylene · alpha-olefin copolymer is not particularly limited as long as it has spinnability, usually, MFR (ASTM D1238 230 ℃, 2160g load) 1 g / 10 min ~ 1000 g / 10 min, preferably 5 g / 10 min ~ 500 g / 10 min, more preferably in the range of 10 g / 10 min ~ 100 g / 10 min.
[0084]
　Polyolefin elastomer may be a single amorphous or low crystallinity polymer, to non-crystalline or low-crystalline polymer, a propylene homopolymer or propylene and copolymers with small amounts of α- olefin may be a high-density polyethylene, the composition of the crystalline polyolefin such as medium density polyethylene were mixed about 1 wt% to 40 wt%.
[0085]
　Particularly preferred compositions as the polyolefin elastomer, isotactic polypropylene (i): 1 mass% to 40 mass%, propylene-ethylene-alpha-olefin copolymer (ii) (a propylene 45 mol% to 89 mol% , a copolymer of ethylene is 10 mol% to 25 mol% and a carbon number of 4-20 alpha-olefins, provided that the copolymerization amount of alpha-olefin having 4 to 20 carbon atoms does not exceed 30 mole% ): 60 mass% to 99 mass%, an elastomer composition comprising a polypropylene resin composition containing.
[0086]
[Thermoplastic resin (B)]
　The thermoplastic resin (B), various known non-thermoplastic elastomer (A) a thermoplastic resin can be used, be used alone, two or more kinds the thermoplastic resin may be used in combination.
[0087]
　Thermoplastic resin (B) is a different resinous polymer thermoplastic elastomer (A), usually the crystallinity of the polymer melting point (Tm) is not less than 100 ° C., or, a glass transition temperature of 100 ° C. more a noncrystalline polymer. As the thermoplastic resin (B), crystalline thermoplastic resins are preferred.
[0088]
　Among the thermoplastic resin (B), when the spunbonded nonwoven fabric obtained by a known production method, the maximum point elongation is 50% or more, preferably 70% or more, more preferably 100% or more, and an elastic thermoplastic resin having a recovery with little properties (elongation thermoplastic resin) is preferred. Such thermoplastic resin (B) nonwoven fabric laminate the long fibers were produced using a mixed fiber spun bonded nonwoven fabric obtained by combined filament and the long fiber of the thermoplastic elastomer (A) of the bulky feeling by stretching expressed, with tactile better, it is possible to impart a blind feature extending in a non-woven fabric laminate. The upper limit of the maximum point elongation of the spunbonded nonwoven fabric made of thermoplastic resin (B) is not necessarily limited, it is usually 300% or less.
[0089]
　As the thermoplastic resin (B), specifically, ethylene, propylene, and 1-butene, 1-hexene, 4-methyl-1-pentene, of α- olefins such as 1-octene homo- or copolymer high-pressure low-density polyethylene, linear low density polyethylene (so-called LLDPE), high density polyethylene (so-called HDPE), polypropylene (propylene homopolymer), polypropylene random copolymers, poly-1-butene, poly-4-methyl-1- pentene, ethylene-propylene random copolymer, ethylene-1-butene random copolymer, a polyolefin such as propylene-1-butene random copolymer, polyester (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate), polyamide ( nylon-6, nylon-66, Li adipamide, etc.), polyvinyl chloride, polyimide, ethylene-vinyl acetate copolymer, ethylene-vinyl acetate-vinyl alcohol copolymer, ethylene- (meth) acrylic acid copolymer, ethylene - acrylic acid ester - it can be illustrated carbon monoxide copolymer, polyacrylonitrile, polycarbonate, polystyrene, ionomers, and mixtures of these thermoplastic resins. Of these, polyolefins, polyethylene terephthalate and polyamides preferred.
[0090]
　Among these thermoplastic resins (B), in view of stretching processability of the spinning stability and non-woven fabric during molding, more preferably a polyolefin, high-pressure low-density polyethylene, linear low density polyethylene (so-called LLDPE), high density polyethylene , polypropylene, propylene-based polymer of the polypropylene random copolymer is more preferable.
[0091]
　Examples of the propylene-based polymer and a melting point (Tm) of the 155 ° C. or more, preferably a propylene homopolymer in the range of 157 ° C. ~ 165 ° C., or propylene and a very small amount of ethylene, 1-butene, 1-pentene, 1 - hexene (except where the 3 carbon atoms) 1-octene, 4-methyl-2 carbon atoms or more pentene, preferably one is a number from 2 to 8 carbon atoms (excluding 3 carbon atoms) or 2 copolymers of species more α- olefins are preferred.
[0092]
　Propylene polymer, as long as it can melt spinning, the melt flow rate (MFR: ASTMD-1238,230 ℃, load 2160 g) is not particularly limited, is usually 1 g / 10 min ~ 1000 g / 10 min, preferably 5g / 10 min ~ 500 g / 10 min, more preferably in the range of 10 g / 10 min ~ 100 g / 10 min. The ratio Mw / Mn of the weight average molecular weight of the propylene-based polymer (Mw) to number-average molecular weight (Mn) is usually 1.5 to 5.0. Spinnability is good, and in that the fibers excellent in fiber strength obtained, Mw / Mn is preferably in the range of 1.5-3.0. Mw and Mn can be by GPC (gel permeation chromatography), it is measured in a known manner.
[0093]
　From the viewpoint of further improving the stretching processability of the resulting nonwoven fabric laminate, it is preferable the thermoplastic resin (B) is an olefin polymer composition prepared by adding HDPE to propylene polymer. In this case, the total 100 wt% of the propylene polymer and HDPE, preferably the proportion of HDPE is 1 mass% to 20 mass%, more preferably from 2 mass% to 15 mass%, 4 mass % more preferably 10% by mass.
[0094]
　The type of HDPE added to the propylene-based polymer is not particularly limited, usually density 0.94 g / cm 3 ~ 0.97 g / cm 3 , preferably 0.95 g / cm 3 ~ 0.97 g / cm 3 , more preferably 0.96 g / cm 3 ~ 0.97 g / cm 3 in the range of. Although not particularly limited as long as it has spinnability, in viewpoint of exhibiting extensibility, HDPE has a melt flow rate (MFR: ASTMD-1238,190 ℃, load 2160 g) is usually 0.1 g / 10 min ~ 100 g / 10 min, preferably 0.5 g / 10 min ~ 50 g / 10 min, more preferably in the range of 1 g / 10 min ~ 30 g / 10 min. In the present invention, the good spinnability, without causing yarn breakage during discharging and during stretching from spinning nozzle, means that the fusion of the filaments does not occur.
[0095]
(Additives)
　If necessary, heat stabilizer the elastic nonwoven and mixed fiber spun bonded nonwoven fabric, weathering various stabilizers stabilizers such as anti-static agents, slip agents, antifogging, lubricants, dyes, pigments, natural oil , it may be added synthetic oils, waxes and the like.
[0096]
(Other layers)
　nonwoven fabric laminate of the present invention, a layer other than the elastic nonwoven and mixed fiber spun bonded nonwoven fabric may have one or more depending on the application.
[0097]
　Specific examples other layer, knitted fabric, woven fabric, elastic nonwovens and the mixed fiber spun bonded nonwoven fabric other than the nonwoven fabric, films, and the like. Further laminating another layer nonwoven laminate of the present invention (be bonded) method is not particularly limited, heat embossing, heat fusing method such as ultrasonic welding, needle punching, mechanical entangling, such as water jet law, hot melt adhesives, a method of using an adhesive such as urethane adhesive, may take a variety of methods such as extrusion lamination.
[0098]
　The nonwoven fabric when the nonwoven fabric laminate of the present invention has a elastic nonwoven and mixed fiber spun bonded nonwoven fabric other than the nonwoven fabric, spunbonded nonwoven fabric, meltblown nonwoven fabric, wet-laid nonwoven fabric, dry nonwoven fabric, dry pulp nonwoven fabrics, flash-spun nonwoven, opening nonwoven etc., it includes various known nonwoven. Even these nonwoven fabric stretchable nonwoven fabric may be a non-stretchable nonwoven fabric. Here, the non-stretchable nonwoven fabric, after stretching in MD (nonwoven flow direction, longitudinal direction) or CD (direction perpendicular to the flow direction of the nonwoven fabric, the lateral direction) refers to not generating the recovery stress at.
[0099]
　The film when non-woven fabric laminate of the present invention has a film, from the viewpoint of retaining the characteristic of a nonwoven laminate is breathable and hydrophilic present invention, air permeability (moisture permeability) film is preferred. The breathable film, a polyurethane elastomer having a moisture permeability, polyester-based elastomer, a film made of thermoplastic elastomers such as polyamide elastomer, and porosified by stretching a film made of a thermoplastic resin containing an inorganic fine particles or organic fine particles consisting of porous films include various known breathable films. As the thermoplastic resin used in the porous film, the high-pressure low-density polyethylene, linear low density polyethylene (so-called LLDPE), high density polyethylene, polypropylene, polypropylene random copolymers, polyolefins such as combinations thereof are preferred. However, when there is no need to retain the breathability and hydrophilicity of the nonwoven fabric laminate, polyethylene, polypropylene, may be used a film of a thermoplastic resin such as a combination thereof.
[0100]
(Method for producing a nonwoven laminate)
　nonwoven fabric laminate of the present invention, the low crystalline polypropylene as a raw material for the elastic nonwoven fabric, thermoplastic elastomer as a raw material for the mixed fiber spun bonded nonwoven fabric (A) and thermoplastic resin (B), and using the additives used if necessary, it can be produced by the production method of the known nonwoven fabric.
[0101]
　As an example of the manufacturing method of the nonwoven fabric laminate will be described below a method of using a nonwoven fabric manufacturing apparatus having a spinning unit of at least two rows.
　First, melting the thermoplastic elastomer in an extruder provided in a spinning device of the first row (A) and thermoplastic resin (B), the mouthpiece (die) having a multiplicity of spinning holes (nozzles), as required introduced into spinning holes having a core-sheath structure, discharges. Thereafter, the long fibers consisting of long fibers and a thermoplastic resin comprising a thermoplastic elastomer which is melt-spun (A) (B) were introduced into the cooling chamber and cooled by the cooling air, stretching a long fiber by stretching air (traction ), and depositing a mixed fiber spunbonded nonwoven fabric on a moving collecting surface.
　On the other hand, to melt the low crystalline polypropylene in an extruder provided in a spinning device of the second column, and introduced into a spinning holes having a mouthpiece (die) having a multiplicity of spinning holes (nozzles), the low crystalline polypropylene to discharge. Thereafter, the long fibers of the low crystalline polypropylene which has been melt-spun into the cooling chamber and cooled by the cooling air, by drawing air stretching a long fiber (tow), is deposited on the mixed fiber spunbonded onto nonwoven to form the elastic nonwoven.
　If necessary, by using a spinning device of the third row, may be deposited mixed fiber spunbonded nonwoven fabric on the elastic nonwoven.
[0102]
　Melting temperature of the elastic nonwoven and mixed fiber spunbonded nonwoven fabric raw material comprising polymers, each polymer softening temperature or the melting temperature or more, but not and particularly limited as long as it is lower than the thermal decomposition temperature. Temperature of the base are used depending on the kind of the polymer, e.g., a thermoplastic elastomer (A) as the thermoplastic polyurethane elastomer or an olefin copolymer elastomer, a propylene-based polymer as the thermoplastic resin (B) or when using the olefin polymer compositions of propylene-based polymer and HDPE, usually 180 ℃ ~ 240 ℃, preferably 190 ~ 230 ° C., more preferably set to a temperature of 200 ~ 225 ° C..
[0103]
　Temperature of the cooling air is not particularly limited as long as the temperature at which the polymer is solidified, usually 5 ° C. ~ 50 ° C., preferably in 10 ° C. ~ 40 ° C., and more preferably in the range of 15 ℃ ~ 30 ℃. Wind speed of drawing air is usually 100m / min ~ 10,000m / min., Preferably in the range of 500m / min ~ 10,000m / minute.
[0104]
　Nonwoven laminate of the present invention preferably has at least a portion of the elastic nonwoven, a structure and at least partially thermally fused the mixed fiber spun bonded nonwoven fabric. In this case, prior to heat sealing and at least part of the mixed fiber spun bonded nonwoven fabric of elastic nonwoven, using nip rolls, may have been compacted.
[0105]
　The method of heat fusion is not particularly limited, may be selected from various known methods. For example, a method using a means such as ultrasonic waves, hot embossing using an embossing roll, and a method of using hot air-through can be exemplified as a pre-bonding. Among them, preferred are heat embossing from the viewpoint of long fibers is efficiently stretched upon stretching, the temperature range is preferably 60 ℃ ~ 115 ℃.
[0106]
　If heat sealing a part of the laminate by hot embossing is usually embossed area ratio is 5% to 30%, preferably from 5% to 20%, non-embossed unit area is 0.5 mm 2 or more, preferably 4Mm 2～ 40Mm 2 is in the range of. The non-embossed unit area, the non-embossed portion of the minimum unit enclosed on all sides by the embossed portions, the maximum area of the square inscribed in embossing. The shape of the marking, circle, ellipse, oval, square, rhombus, rectangular, square, continuous shape such that the base and these shapes and the like.
[0107]
　
　stretchable nonwoven fabric laminate of the present invention is obtained by stretching the nonwoven fabric laminate is a nonwoven fabric laminate having elasticity.
[0108]
　Stretchable nonwoven fabric laminate of the present invention, the nonwoven fabric laminate by stretching, can be obtained. The method of stretching is not particularly limited, can be applied a conventionally known method. The method of stretching may be a method of partially drawn, or a method for generally stretched. Also, a method of uniaxially stretching, may be a method of biaxial stretching. As a method for stretching in the machine flow direction (MD), for example, a method of passing the partially fused mixed fibers of two or more nip rolls and the like. At this time, the rotational speed of the nip rolls, partially stretched fused nonwoven laminate by faster in the order of the machine flow direction. It is also possible to gear-stretch processing using a gear drawing device shown in FIG.
[0109]
　The stretching ratio is preferably 50% or more, more preferably 100% or more, more preferably 200% or more, and, preferably 1000%, more preferably at most 400%.
[0110]
　Preferably either draw ratio of the machine flow direction (MD), or which in a direction perpendicular (CD) satisfies the above draw ratio in the case of uniaxial stretching. Two in the case of biaxial stretching of the machine flow direction (MD) and which in a direction perpendicular (CD), it is preferable that at least one satisfies the above draw ratio.
[0111]
　By stretching in such a draw ratio, to form the elastic nonwoven fabric and the mixed fiber spunbonded non-woven fabric long fibers are both being drawn, the long fibers forming the mixed fiber spun bonded nonwoven fabric layer, the plastic deformation and it is extended in accordance with the stretching ratio (longer).
[0112]
　Thus, after stretching the nonwoven laminate, the stress is released, forming the elastic nonwoven fabric long fibers and elastic recovery, long fibers forming the mixed fiber spun bonded nonwoven fabric, and folded without elastic recovery , bulky feeling is expressed in non-woven fabric laminate. Moreover, since the long fibers forming the mixed fiber spun bonded nonwoven fabric becomes thinner with flexibility and feel is improved, it is possible to impart elongation blind feature.
[0113]
　
　textile product of the present invention comprises a nonwoven laminate or the elastic nonwoven fabric laminate of the present invention. Textiles is not particularly limited, disposable diapers, absorbent articles such as catamenial sanitary articles such as sanitary masks, medical articles bandages etc., clothing materials, and the like packaging materials. Textile products of the present invention preferably comprises a nonwoven laminate or the elastic nonwoven fabric laminate of the present invention as the elastic member.
Example
[0114]
　Hereinafter, a more detailed description of the present invention based on examples, the present invention is not limited to these examples. Physical properties such as in the examples and comparative examples were measured by the following method.
[0115]
(1) basis weight [g / m 2 ]
　nonwoven alone or 200 mm (flow direction: MD) of a nonwoven laminate × 50 mm (transverse direction: CD) were collected six test pieces. It should be noted that, taken place was MD, CD together with any of the three locations (a total of 6 points). Then, each test piece taken, using the upper tray electronic balance (KenTadashi Kogyo Co., Ltd.) to respectively measure the mass (g). The average of the weight of each specimen was determined. From the mean values obtained 1 m 2 in terms of per weight (g), the basis weight of each sample were rounded to one decimal place [g / m 2 was].
[0116]
(2) formability
　an embossing roll is run 5 minutes at embossing process, to confirm the attachment state that occurs when the nonwoven fabric alone or the nonwoven fabric laminate is passed through an embossing roll.
　　○: state of adhesion with the naked eye is not confirmed at all.
　　△: state of adhesion with the naked eye is not confirmed almost.
　　×: Condition adhesion visually is confirmed wound attached state or the embossing roll,
[0117]
(3) maximum load elongation (%)
　were taken test pieces five 50mm from nonwoven alone or nonwoven fabric laminate (MD) × 200 mm (CD). This test piece, using a constant extension rate type tensile tester between chucks 100 mm, tension subjected to tensile test at a rate of 100 mm / min conditions, elongation of the test piece at the time the load applied is maximized to the test piece It was measured. The average value of five specimens was determined and the maximum load elongation.
[0118]
(4) residual strain (%)
　a nonwoven fabric alone or the nonwoven fabric laminate was cut test pieces five 250mm (MD) × 50mm (CD ). The test piece between chucks 30 mm, tensile rate 30 mm / min, and drawn at a draw ratio of 100% condition. Immediately thereafter, it allowed to recover at the same rate until the original length to obtain a stretchable nonwoven fabric. In this case, at the time when the tensile load has become 0gf, to measure the distortion. The average value of five nonwoven residual strain (unit:%) was evaluated as.
[0119]
(5) at the time of 50% elongation stress, 50% recovery stress at expansion and contraction characteristics
　universal tensile tester (Intesco Co., IM-201 type) was used, a nonwoven fabric alone or the nonwoven fabric laminate, 25 mm (MD) × 200 mm (CD a test piece of) the five collected. Then, each specimen sample width 25mm taken, distance between chucks 100 mm, after the tensile rate of 300 mm / min in the conditions of the test strip 100% elongation, was allowed to immediately recover at the same rate until the original length. This operation was further cycles of the stress when the draw ratio during the second cycle extension became 50% and 50% elongation stress at, when the draw ratio during the second cycle recovery was 50% the stress was 50% recovery time of stress. Then, the value of [at the time of 50% elongation stress ÷ 50% recovery stress at] as a measure of the stretch properties were measured and evaluated an average value of 5 test pieces as stretch properties. Incidentally higher stretch properties value is small [at the time of 50% elongation stress ÷ 50% recovery stress at] is the more excellent.
[0120]
(6) Stickiness
　nonwoven alone or evaluator 10 helpful nonwoven laminate touched by hand and evaluated the stickiness to the following criteria.
　◎: 10 people 10 people out of there is no stickiness, if the touch is felt good.
　○: 9 ~ 7 people out of people 10 without stickiness, if the touch is felt good.
　△: 6 ~ 3 people out of people 10 without stickiness, if the touch is felt good.
　×: 2 ~ 0 out of ten people without stickiness, if the touch is felt good.
[0121]
(7) low temperature heat sealing property
　and the nonwoven fabric laminate, superimposed one by one each was peeled off from a commercially available paper diaper nonwoven, using a heat sealer, temperature 90 ° C., pressure 0.3 Mpa, heat sealed under the conditions of time of 1 second It was prepared and the sample. The three test pieces fabricated sample from 250mm (MD) × 50mm (CD ) were collected. It was then affixed packing tape on both sides of a portion of the test piece (MD direction 20mm from the edge). Then, by pulling manually in both directions of the packing tape specimens, an interlayer of the nonwoven laminate is 100mm peeling. Thereafter, the peeled layers was set to a constant extension rate type tensile tester between chucks 100 mm, tension subjected to tensile test at a rate of 100 mm / min conditions, stress of the specimen at the time the load on the specimen is maximized It was measured. The average value of three test pieces was evaluated as a low-temperature heat sealability. If the test strip is firmly fixed to the extent of causing a substrate fracture was "broken wood".
[0122]
[Example 1]

　number average molecular weight of 1932 polyester polyol: 71.7 parts by weight of 1,4-butanediol (hereinafter, abbreviated as "BD".): 4. 8 parts by weight of pentaerythritol tetrakis [3- (3,5-di -t- butyl-4-hydroxyphenyl) propionate] (hereinafter, referred to as "antioxidant -1".): 0.3 parts by weight poly carboxylic diimide: 0.3 part by mass, MDI: adding 22.9 parts by mass, and sufficiently high-speed stirring mixing. Then reacted at 160 ° C.. After pulverizing the reaction product, the ground product with respect to 100 parts by weight of ethylene bis-stearic acid amide: 0.8 parts by mass, triethylene glycol - bis - [3- (3,5-di -t- butyl -4v hydroxyphenyl) propionate] (hereinafter, referred to as "antioxidant 2"). 0.5 parts by weight, ethylene bis-oleic acid amide (hereinafter abbreviated as "EOA"). 0.8 parts by weight mixed. Thereafter, an extruder (preset temperature: 210 ° C.) in and melt-kneaded and granulated to obtain a thermoplastic polyurethane elastomer [TPU (A-1)].
　The properties of the resulting TPU (A-1), the hardness: 81, Melt viscosity: 1.1, were flow temperature 155 ° C..
[0123]
(conforming to ASTM D1238, temperature 230 ° C., measured under a load 2.16kg) MFR 60g / 10 min, density 0.91 g / cm 3 , melting point 160 ° C. propylene homopolymer (hereinafter abbreviated as "PP-1") and 92 parts by weight, (in conformity with ASTM D1238, temperature 190 ° C., measured under a load 2.16 kg) MFR 5 g / 10 min, density of 0.97 g / cm 3 , high density polyethylene having a melting point of 134 ° C. were mixed with (hereinafter, abbreviated as "HDPE") 8 parts by weight, the thermoplastic resin composition (B-1) was prepared.
[0124]

　with stirrer, inner volume 0.2 m 3 stainless steel reactor, an n- heptane 20L / h, triisobutylaluminum at 15 mmol / h, further, dimethyl and tetrakis (pentafluorophenyl) borate (1,2'-dimethylsilylene) (2,1'-dimethylsilylene) - bis (3-trimethylsilyl-methylindenyl) zirconium dichloride and triisobutylaluminum and propylene in contact with the pre the resulting catalyst component was continuously fed with zirconium per 6μmol / h.
[0125]
　8 mol% and a vapor phase portion of hydrogen concentration at the polymerization temperature 70 ° C., a total pressure in the reactor so as to maintain the 0.7 MPa · G, was continuously supplied propylene and hydrogen.
　The obtained polymer solution was added SUMILIZER GP (manufactured by Sumitomo Chemical Co., Ltd.) so as to 1000 ppm, by removing the solvent, to obtain a low-crystalline propylene polymer.
[0126]
　The weight average molecular weight of the resulting low-crystalline propylene polymer (Mw) of 1.2 × 10 4 was, Mw / Mn = 2. Further, determined from NMR measurement [mmmm] is 46 mol%, [rrrr] / (1- [mmmm]) is 0.038, [rmrm] is 2.7 mol%, [mm] × [rr ] / [ Mr] 2 was 1.5.
[0127]
　
　TPU prepared above (A-1) and the thermoplastic resin composition and (B-1), were fused independently using an extruder and 50mmφ extruder of 75Mmfai. Thereafter, spun-bonded nonwoven fabric forming machine (collection surface on the machine flow direction perpendicular to the direction of length: 800 mm) having a spinneret with a resin temperature and a die temperature of both 205 ° C., the cooling air temperature 20 ° C. , and melt-spun by a spunbonding method under the conditions of stretching air wind 3200 m / min, comprising a long fiber a comprising TPU (a-1), and the long fibers B comprising a thermoplastic resin composition (B-1), the the web consisting of mixed continuous fibers were deposited onto a collecting surface.
[0128]
　Specifically, using a nozzle pattern and discharge holes are alternately arranged in the discharge hole and the thermoplastic resin composition of the TPU (A-1) as a spinneret (B-1), TPU (A-1) nozzle diameter (long fiber a) is 0.75Mmfai, nozzle diameter of the thermoplastic resin composition (B-1) (long fiber B) is 0.6 mm, longitudinal 8mm pitch of nozzles, lateral is 11 mm, the ratio of the number of nozzles is a nozzle for long fibers a: long fiber B nozzles = 1: 1.45. Single-hole discharge rate of the long fiber A is 0.78 g / (min · hole), the single-hole discharge rate of the long fiber B is a 0.59 g / (min · hole), collecting the spunbonded nonwoven fabric made of mixed continuous fibers on the surface it was deposited as a first layer.
[0129]
　Then, on the mixed fiber spun bonded nonwoven fabric was deposited elastic nonwoven as the second layer. Specifically, the low crystalline polypropylene produced by the above method was melted using a single-screw extruder having a screw diameter of 75Mmfai. Thereafter, the spinneret (die, hole number 808 holes) spunbonded nonwoven fabric forming machine having a (collection surface on the machine in the direction of flow of the perpendicular length: 800 mm) using a resin temperature and the die temperature are both 215 ° C., the cooling air temperature 20 ° C., and melt-spun by a spunbonding method under the conditions of stretching air wind 3750M / min, was deposited as a second layer.
[0130]
　Then, on the elastic nonwoven, a third layer, the first layer and the same mixed fiber spun bonded nonwoven fabric deposited by the same method as the first layer, to produce a three-layer structure deposits. The sediment heating and pressurizing treatment with an embossing roll (embossing area percentage of 18%, embossing temperature 70 ° C.) to a total weight per unit area 60.0 g / m 2 is, first layer and the third layer having a basis weight the amount each 20.0 g / m 2 is, weight per unit area of the second layer is 20.0 g / m 2 to prepare a non-woven fabric laminate is.
[0131]
　Nonwoven laminate obtained as described above, adhesion to the metal roll surface in the embossing step is hardly, and the moldability was good. Results The physical properties of the resulting nonwoven fabric laminate was measured are shown in Table 1.
[0132]
　[Example 2]
　In the same manner as in Example 1, a web comprising a mixed long fibers containing a long fiber B comprising TPU (A-1) long fiber A and the thermoplastic resin composition consisting of (B-1) on a collecting surface it was deposited as a first layer.
[0133]
　Then, as the second layer, TPU were prepared in the same manner as in Example 1 and (A-1) a low crystalline polypropylene was melted independently using an extruder and 50mmφ extruder of 75Mmfai. Thereafter, spun-bonded nonwoven fabric forming machine (collection surface on the machine flow direction perpendicular to the direction of length: 800 mm) having a spinneret with a resin temperature and a die temperature of both 205 ° C., the cooling air temperature 20 ° C. , and melt-spun by a spunbonding method under the conditions of stretching air wind 3200 m / min, the mass ratio, including a 40% long fibers consisting of TPU (a-1), 60% and long fibers of low crystalline polypropylene, web composed of mixed continuous fibers (elastic nonwoven) was deposited on the web consisting of mixed continuous fibers of the first layer.
[0134]
　Second layer elastic nonwoven, specifically, using a nozzle pattern and discharge holes are alternately arranged in the discharge hole and the low crystalline polypropylene TPU (A-1) as a spinneret, TPU (A nozzle diameter of -1) is 0.75Mmfai, nozzle diameter of the low crystalline polypropylene is 0.6 mm, a pitch of the longitudinal direction 8 mm, lateral 11mm nozzle, the ratio of the number of nozzles TPU (A- long fibers nozzle consisting 1): low crystalline polypropylene fibers nozzle = 1: 1.45 and then, single-hole discharge rate of the long fibers of TPU (a-1) is 0.60 g / (min · hole), single-hole discharge rate of the long fibers of the low crystalline polypropylene as 0.60 g / (min · hole), deposited on the web of a mixed long fibers of the first layer.
[0135]
　Then, as the third layer, consisting of mixed long fibers containing a long fiber B comprising the first layer and the same TPU (A-1) long fiber A and the thermoplastic resin composition consisting of (B-1) web and, by the same method as the first layer deposited on the second layer of elastic nonwoven, was a three-layer structure deposits. The sediment heating and pressurizing treatment with an embossing roll (embossing area percentage of 18%, embossing temperature 90 ° C.) to a total weight per unit area 60.0 g / m 2 is, first layer and the third layer having a basis weight the amount each 20.0 g / m 2 is, weight per unit area of the second layer is 20.0 g / m 2 to prepare a non-woven fabric laminate is.
[0136]
　Nonwoven laminate obtained as described above, adhesion to the metal roll surface in the embossing step is hardly, and the moldability was good. Results The physical properties of the resulting nonwoven fabric laminate was measured are shown in Table 1.
[0137]
　[Comparative Example 1]
　was prepared by the method of Example 1 TPU (A-1), were melted using a single-screw extruder having a screw diameter of 75Mmfai. Thereafter, spun-bonded nonwoven fabric forming machine (collection surface on the machine flow direction perpendicular to the direction of length: 800 mm) having a spinneret with a resin temperature and a die temperature of both 205 ° C., the cooling air temperature 20 ° C. , and melt-spun by a spunbonding method under the conditions of stretching air wind 3200 m / min, was deposited long fiber a comprising TPU (a-1) on a collecting surface. The sediment heating and pressurizing treatment with an embossing roll (embossing area percentage of 18%, embossing temperature 107 ° C.) was, deposits will adhere to the embossing roll, was not able to produce a desired TPU alone nonwoven .
[0138]
　[Comparative Example 2]
　The low crystalline polypropylene produced in Example 1 was melted using a single-screw extruder having a screw diameter of 75Mmfai. Thereafter, the spinneret (die, hole number 808 holes) spunbonded nonwoven fabric forming machine having a (collection surface on the machine in the direction of flow of the perpendicular length: 800 mm) using a resin temperature and the die temperature are both 215 ° C., the cooling air temperature 20 ° C., and melt-spun by a spunbonding method under the conditions of stretching air wind 3750M / min, was deposited low crystalline polypropylene alone nonwoven fabric on a collecting surface. The sediment heating and pressurizing treatment with an embossing roll (embossing area percentage of 18%, embossing temperature 70 ° C.) was, that the deposits will adhere to the embossing roll to produce a desired low crystalline polypropylene alone nonwoven could not.
[0139]
　[Comparative Example
　3] (in conformity with ASTM D1238, temperature 230 ° C., measured under a load 2.16kg) MFR 8.5g / 10 min, density 0.91 g / cm 3 , a propylene homopolymer having a melting point of 160 ° C. (hereinafter the "polymer IA") was melted using an extruder of 50 mm [phi], in compliance with independently MFR (ASTM D1238 with it, temperature 230 ° C., measured under a load 2.16 kg) 60 g / 10 min, density 0. 91g / cm 3 , was melted in an extruder of 75mmφ a propylene homopolymer having a melting point of 160 ° C. (hereinafter "polymer II"). Then, "polymer I" core, "polymer II" is moldable spinneret core-sheath composite fibers of the core such that the sheath spunbonded nonwoven fabric forming machine having a (die hole number 2887 holes) (the length of the machine flow direction perpendicular to the direction of the collecting surface: 800 mm) using a resin temperature and a die temperature of both 250 ° C., the cooling air temperature 20 ° C., the span under the conditions of stretching air wind 3750M / min performs composite melt spinning by bond method, is deposited on a collecting surface spunbonded nonwoven mass ratio of the core portion and the sheath portion is made of a core-sheath composite fibers of the same core 10/90 (sheath spunbonded nonwoven fabric) It was. The sediment heating and pressurizing treatment with an embossing roll (embossing area percentage of 18%, embossing temperature 107 ° C.) to a total weight per unit area 60.0 g / m 2 to prepare a core-in-sheath spunbonded nonwoven fabric alone is.
[0140]
　Sheath spunbonded nonwoven fabric obtained as described above, adhesion to the metal roll surface in the embossing step is hardly, and the moldability was good. Results The physical properties were measured of the resulting sheath-core spunbond nonwoven fabric are shown in Table 1.
[0141]
　[Comparative Example 4]
　TPU prepared in Example 1 (A-1) and the thermoplastic resin composition and (B-1), were fused independently using an extruder and 50mmφ extruder of 75Mmfai. Thereafter, spun-bonded nonwoven fabric forming machine (collection surface on the machine flow direction perpendicular to the direction of length: 800 mm) having a spinneret with a resin temperature and the die temperature is Tomo 205 ° C., the cooling air temperature 20 ° C. , and melt-spun by a spunbonding method under the conditions of stretching air wind 3200 m / min, mixing length containing a long fiber B comprising TPU (a-1) long fiber a and the thermoplastic resin composition consisting of (B-1) the web of fiber deposited on a collecting surface.
[0142]
　Specifically, using a nozzle pattern in which the discharge holes are arranged in alternating discharge hole and the thermoplastic resin composition of the TPU (A-1) as a spinneret (B-1), TPU ( A-1) ( nozzle diameter of the long fiber a) is the 0.75Mmfai, thermoplastic resin composition (B-1) (the nozzle diameter of the long fiber B) was 0.6 mm, longitudinal 8mm pitch of nozzles, lateral 11mm , and the ratio of the number of nozzles is a nozzle for long fibers a: long fiber B nozzles = 1: 1.45. Single-hole discharge rate of the long fiber A is 0.78 g / (min · hole), the single-hole discharge rate of the long fiber B is a 0.59 g / (min · hole), collecting surface deposits consisting of mixed continuous fibers It was deposited on top. The deposit heating and pressurizing treatment with an embossing roll (embossing area percentage of 18%, embossing temperature 107 ° C.) to a total weight per unit area 60.0 g / m 2 to prepare a mixed fiber spun bonded nonwoven fabric is.
[0143]
　The mixed fiber spun bonded nonwoven fabric obtained as described above, adhesion to the metal roll surface in the embossing step is hardly, and the moldability was good. Results The physical properties were measured of the resulting mixed fiber spun bonded nonwoven fabric are shown in Table 1.
[0144]
　[Comparative Example 5]
　basis weight of 20.0 g / m 2 Other than changing as a in the same manner as in Comparative Example 3, was deposited as a first layer a core-sheath spunbonded nonwoven fabric on a collecting surface.
[0145]
　Then, the low crystalline polypropylene produced by the method of Example 1, was melted using a single-screw extruder having a screw diameter of 75Mmfai, spinneret (die, hole number 808 holes) spunbonded nonwoven fabric forming machine having (catching a length in a direction perpendicular to the machine direction of flow on the current surface: 800 mm) using a resin temperature and a die temperature of both 215 ° C., the cooling air temperature 20 ° C., spunbonded under the conditions of stretching air wind 3750M / min melt spinning, the basis weight 20.0 g / m on the core-sheath spunbonded nonwoven fabric of the first layer 2 was deposited elastic nonwoven fabric.
[0146]
　Then, as the third layer, the first layer and the same core-sheath spunbonded nonwoven by the same method as the first layer deposited on the second layer of elastic nonwoven, having a three-layer structure sediments did. The sediment heating and pressurizing treatment with an embossing roll (embossing area percentage of 18%, embossing temperature 70 ° C.) to a total weight per unit area 60.0 g / m 2 is, is the first layer and the third layer sheath spunbond weight per unit area, respectively 20.0 g / m nonwoven fabric 2 is, the basis weight of the elastic nonwoven is a second layer is 20.0 g / m 2 to prepare a non-woven fabric laminate is.
[0147]
　Nonwoven laminate obtained as described above, adhesion to the metal roll surface in the embossing step is hardly, and the moldability was good. Results The physical properties of the resulting nonwoven fabric laminate was measured are shown in Table 1.
[0148]
　In Example 1, as can be seen from the comparison with Comparative Example 5, the results only at the time of 50% elongation stress is 50% recovery stress at unchanged increased, stretch properties (at the time of 50% elongation stress / 50% recovery stress at ) decreases, stretchability was improved.
[0149]
[Table 1]

[0150]
　The disclosure of Japanese Patent Application No. 2015-046378 its entirety is incorporated herein by reference. All documents described herein, patent applications, and technical standards, each individual publication, patent applications, and to the same extent as if it is marked specifically and individually incorporated by techniques standard reference, It incorporated by reference herein.

[Claim 1]
　An elastic nonwoven fabric containing low crystalline polypropylene satisfying the following (a) ~ (f), disposed on at least one surface side of the elastic nonwoven fabric, the long fiber of the thermoplastic elastomer (A), the thermoplastic elastomer (A) other than and long fiber of the thermoplastic resin (B), but 10% to 90% by weight: the proportion of 90 wt% to 10 wt% (((a) :( B ), provided that (a) + (B) = 100 wt % to) nonwoven fabric laminate having a mixed fiber spunbonded nonwoven fabric that are included
in. (a) [mmmm] = 20 ~ 60
mol% (b) [rrrr] / (1-[mmmm]) ≦ 0 .1
(c) [rmrm]> 2.5
mol% (d) [mm] × [rr] / [mr] 2 ≦ 2.0
(e) a weight average molecular weight (Mw) = 10,000 ~ 200,000
(f) molecular weight distribution (Mw /
Mn) <4 in (a) ~ (d), [ mmm] is the meso pentad fraction, [rrrr] is a racemic pentad fraction, [rmrm] is racemic meso racemic meso pentad fraction, [mm], [rr] and [mr] Each triad it is a fraction.
[Claim 2]
　Long fiber of the thermoplastic resin (B), the nonwoven fabric laminate according to claim 1 the maximum point elongation at the time of the spunbonded nonwoven fabric is 50% or more.
[Claim 3]
　Thermoplastic elastomer (A), a nonwoven fabric laminate according to claim 1 or claim 2 which is a thermoplastic polyurethane elastomer.
[Claim 4]
　The thermoplastic polyurethane based elastomer, and a solidification starting temperature measured by differential scanning calorimetry (DSC) is 65 ° C. or higher, and is measured with a particle size distribution measuring apparatus equipped with a 100μm aperture based on a pore electrical resistance method nonwoven laminate according to claim 3 that the number of particles dimethylacetamide solvent insoluble content is less than 3 million / g.
[Claim 5]
　The thermoplastic polyurethane based elastomer, nonwoven laminate according to claim 3 or claim 4 which is a thermoplastic polyurethane elastomer satisfying the following relationship (I).
　　a / (a + b) ≦ 0.8 (I)
(in formula, a represents the sum of heat of fusion determined from the endothermic peak existing in the range of 90 ° C. ~ 140 ° C. as measured by DSC, b is DSC by representing the sum of the heat of fusion calculated from an endothermic peak in the range of 220 ° C. or less beyond 140 ° C. to be measured.)
[Claim 6]
　Thermoplastic resin (B), the nonwoven fabric laminate according to any one of claims 1 to 5 is a polyolefin.
[Claim 7]
　Thermoplastic resin (B), the nonwoven fabric laminate according to any one of claims 1 to 6, which is a propylene polymer.
[8.]
　Thermoplastic resin (B), the propylene polymer 99-80 wt% and the nonwoven fabric laminate according to any one of claims 1 to 7 comprising a high-density polyethylene 1 to 20 mass%.
[Claim 9]
　Claims 1 to stretching and stretchable nonwoven fabric laminate obtained by the non-woven fabric laminate according to any one of claims 8.
[Claim 10]
　Textile products including elastic nonwoven fabric laminate according to nonwoven laminate or claim 9 according to any one of claims 1 to 8.
[Claim 11]
　Absorbent article comprising the elastic nonwoven fabric laminate according to nonwoven laminate or claim 9 according to any one of claims 1 to 8.
[Claim 12]
　Sanitary mask comprising a stretchable nonwoven fabric laminate according to nonwoven laminate or claim 9 according to any one of claims 1 to 8.