DESCRIPTION
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I A NONvlOVEN w'EB FOR FASTENER FEMALE MEMBER
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TECHNICAL FIELD I
The subject. invention generally relat·es. to a nom·10ven I
' I ' I web for use ·in connec'tion \·lith a fastening system such as a:
receiving.component of a fastener. I
10 BACKGROUND ART
Refastenable mechanical fastening systems can be used
in a >~ide number· of applications. For example, such
refastenable fastening systems can be used to connect one
portion of a disposable absorbent article to another portion
· 15 of the disposable absorbent article.
In general, mechanical fastening systems contain a
receiving component (e. g., a female component) and an engaging
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component (e. g., a male component) . In some mecha.nical
fastening systems' the, engaging component contains a plurality
20 of hook elemepts, anct: the receiving component cqntains a
plural.ity of loop elements. In a fas.tened state, the hook
elements typically are entangled with the loop elements,
thereby forming· a connection between the engaging and
receiving components.
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Nomwven l·mbs can be used as the receiving component.
Typically, a nonwoven receiving component contains a plurality
of polymeric fibers. Portions of-these fibers can be joined
.together by fiber-to-fiber bonds to form a l·reb having
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5 sufficient available u'ribonded fibers or imbonded portions of
bonded fibers and 1·1eb integrity. The fiber-to-fiber bonds are
typically . formed by fusing portions fibers together via, for '
·example,: heat, pressure, o·r:·sound ( e.'g., ultrasonic) energy.
,. In some processes, a pair of heated calendering rolls
10 . can be used to create these fiber-to-fiber bonds. Typically,
one of the calendering· rolls contains a plurality of
protrus'ions which extend olltHard from its outer surface. A
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cons'tant force is generally applied to one of the-calendering
··rolls such that as the nom10ven 1·1eb passes bett-1een the
15 calendering rolls, the protrusions apply pressure to the
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nomroven l•reb. In general, at the locat-ion of applied pressure,
at least one fiber-to~fiber bond is created.
SUMMARY
The folloHing presents a simplified summary of the
invention in order to provide a basic understanding of. some
aspects of the invention. This summary is not an extensive
.overvieH of the invention. It is intended to neither identify
key or critical elements of the invention nor delineate the
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scope of the inventio~. Its sole purpose is to present some
concepts of the invention in a simplified form as a prelude
·t·o the more detailed description that is presented later.
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One aspect of the subject invention provides a nom10ven
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5 1·1eb containing a bonded portion (e. g., embossed portion) . The
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nom1oven .1·/eb can be used as a receiving· component/member of
·a fastener. The rioni~oven Heb contains a composite fiber
'having ·crimps and containing first ·and second propylene
polymers. The bonded portion contains zigzag unit patterns
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that are disposed in a machine direction· at predetermined ·I
intervals, the zigzag .unit patterns being continuous I I
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substantially parallel with a cross machine direction.
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triangle formed by adjacent thre.e contact points of a first 1
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diagonal line and a second diagonal line of the unit pattern I
'15 contains a part of the. unit pattern that is adjacent to. the
triangle in the machine direction.
To the accomplishment of the foregoing and related end",
the invention, 'then, conta:ins the feat.ures hereinafter fully
described and particularly pointed out in the claims. The
20 foll011ing description and the annexed draHings set forth in
detail certain illustrative embodiments of the invention ..
These embodiments are indicative, hoHever, of but a ·feH of the
various Hays in Hhich the principles of the invention may be
employed. Other objects, advantages and novel features of the
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invention will become apparent fiom the fcillowing detailed,
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d~scri.ption of the· invention 1•1hen considered in conjunction I
.1'/ith the drawings.
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BRIEF DESCRIPTION OF THE DRAWINGS I
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Fig .. lA is an elevation vieH showing a fastening system j
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that contains a nomvoven >~eb in accordance with the subject!
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invention. i
Fig. lB is a plan view showing a receiving component ofl
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the fastening system of Fig. lA, the receiving component!
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.containing a nomroven l·ieb . in accordance \•lith the
invention.
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subject!
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· Fig. 2A is a schematic view shoHing a process· fox I
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producing bonding patterns in accordance with the subject!
invention.
Fig. 2B is an elevation vie1·1 shmring a side of a
of calendering,rolls of the proc~ss of Fig. 2A.
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pair I
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. Fig. 2C is a plan viev1 sho1·1ing a· receiving component
containing a nonwoven Web in accordance with the subject
20 invention.
Figs. 3A-3C are plan views showing the nonwoven web of
Fig. 1 highlighting additional features of ttte bonding
pattern.
Figs. 4A-4J are plan vieHs sh01·1ing other embodiments of
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a nom10ven Heb ·having bond patterns in accordance Hith the
subject invention.
Fig .. 4K i·s a close up vie1-1 sh01·ling a section of the
nom1oven \·1eb of Fig. :4A.
5 Fig. 4L is a close up vieH of shoHing a section of the
hon1·10ven Heb of Fig. 1. I
showing repeat.ing units· I
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Figs, SA-SE are plan vie-.;·rs
various embodiments for repeating units Hhich can be included
in a .bond pattern constructed in accordance Hi th the subject I
10 inve,nt·ion.
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Fig. 6 is a plan vieH · sho1dng another embodiment of a
nom10ven Heb constructed in accordance Hith the subject
invention.
Fig. 7A is. a perspective vieH sh01dng a disposable
15 absorbent article containing a nom/oven Heb in accordan.ce \·lith
the subject invention. , .
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Fig, 7B is a plan vie1·1 sho;ling the disposable absorbent
article of Fig. 7A in a f1attened-out hncont~acted state.
Fig. 7C is an elevation view sh01·ling another embodiment
20 of a side panel of the disposable absorbent article of Fig.
7A ..
Fig: SA is an elevation vieH shoHing a portion of the
disposable absorbent article of Fig. 6 having its fastening
system in a fastened state.
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Fig. 8B is an elevation view showing a portion of the
s\isposable absorbent article of Fig. 7~ having_ its fastening
system in a fastened state, 1vherein a receiving component of
the fastening system is disposed on the disposable absorbent
5 article to provide a visual ,alignment aid.
Figs. 9A-·9c illustrate cress section views of exemplary
'· composite fibers in accordance l·ri th the subject invention.
Fig. 10 illustrates an exemplary' elution curve of a first
propylene polymer and a ·s.econd propylene polymer in accordance
10 Hith the subject invention ..
F·igs. 11-13 illustrate engraved patterns of surfaces of
embossing rolls used.in Comparative Examples 2-4.
Fig. 14 is a vertical cross sectional vie1·1 of an exemplary
non\•Toven ~·1eb for use as a receiving cOmponent of a fastener
15 · in. accordance !•lith the subject invention.
DETAILED DESCRIPTION.
DEFINITIONS
As used herein, the terms "absorbent article" and
20 "article" refer to a wearable device that absorbs and/or
contains liquid and, more specifically, refers to a device that
is placed against or in proximity to the body of the wearer
to absorb and contaiY) the various exudates discharged from the
body. Suitable examples include diapers, trainiY)g pants,
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refastenable pants, pull-on garments, ac\ult incontinenc': 'I
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products and feminine care products such as s·anitaJ;y napkins. . I
Furthermore, the terms "absorbent a·rticle" and "article" I
include a "disposable abso:i:bent article" Hhich is intended to 1
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5 be (jiscarded ·and not laundered or othen~lse restored after no !
more .than about ter\ us.es,. preferably qfter no more than about
five
. -. : ·. . : : ~ . ' ) . '. . .
us.e. s. , and most p. referably after a single use (although
certain •components may be· recycled, . reused, or composted) . ,
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''Body-facin9u _and. "g.ci.rment-facing" refer reSpectively
10 to the relative loca•i:ion of an element or a surface of an
element or group of elements. · "Body-fd.cir:g" implies the
element or surface is nearer to the wearer during Hear than
some other element or surface. "Garment-facing" implies the
e·lement or surface is more remote from the l..rearer during vtear
.15 than some other elemeht or surface (e. g .. , element or surface
is .Proximate to the >Tearer's garments that may be \•Torn over
the disposable absorbent article) .
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As. used herein, the t"'rm "bond lin~" refers to a· piurali ty
of sites on a substrate Hhere the fibers of the substrate have
20 been fused together. The plurality of sites can be fused
together to form the ''line .. u However, the term 11 line," as used
herein, can also describe a series of discrete points or short .
lines c;Losely spaced so. as to effectively approximate a line.
Therefore, those skilled iri art Hill recognize that although
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another element by affixing the element c;!Lrectly to the other
·element, and configurations •·1hereby an element is indirectly
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secured to another element by affixin~ the element to a~ I
intermediate member ( s) which in turn are affixed to the other
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5 element. I
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The term "longij:udinal" is used herein to refe·r to a I
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direction Hhich is generally parallel to the longest edge of j
·an element except VThere other1'1ise no.ted. In the context of
disposable absorbent ~rticl~s. a "longitudinal" direction
10 runs. substantially perpendicular from. a I·Jaist edge to an
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opposing Haist edge of the article and generally parallel to
the maximum linear dimension of the article. Directions
within ±.about 45 degrees of the longitudinal direction are
considered to be "longitudinal."
15 The ·term "lateral" refers to.: a direction running
generally perpendicular to and in the same plane as the 1
'';longitudinal" direction. In the context of disposable
absorbent articles, a "la·teral"1 direction runs from one
longitudinal edge of the article to an opposing longitudinal
20 edge of the article. Directions 1·1i thiri ± about 45 degrees of
the lateral direction are considered to be "lateral."
The terms ''machine direction" or \\MD" refer to a
direction Hhich is generally parallel to the for1·1ard direction
of a material, member, element, item, component, etc. through
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a process. For example, non;.;ovens are typically formed with
a machine direction that.corresponds to the long or rolled
direction of fabrication. The machine direction can also be
i the primary direction of f·iber orientat.ion in the nomlcJVen. · i
5 - The ·terms "cross machine direction" or "CD" refer to a i
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direction which is generally perpendicular to and in the same i
plane as the machine direction.
The t~rms "pant," "~r~ining p~nt,n "closed diaper,"
"pre-fastened diaper, If· anc;l ."pull-on diaper, H as us~d herein,
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10 refer to disposable' garments having a· ;~aist openi~g and leg
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openings designed for infimt or adult \'l.earers. A pimt can be .i
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configured such that th~ pant has a closed waist and leg
openings prior to being donned on the 1·1earer, or the pant can
be configured such that the H.aist is closed and the leg open.ings
. '15 formed H'h ile on the wearer. A pant may be preformed by any
suitable'technique including, but not limited to, joining
together portions of tli.e article using a refastenal!Jle
fastening system. A pant I_Uay be preformed anyt·lhere along the 1·
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cir~umference of the aiticle (e.g., side fastened, front VTaist j
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~0 fastened, rear v.raist fastened). Examples
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of suitable pants
are disclosed in u.s. Patent No. 5,246,433; u.s. Patent No.
5,569,234; u.s. Patent N6. 6,120,487; u.s. Patent No.
6,120,489; u.s. Patent No. 4,940,464; u.s. Patent No.
5,092,861; u.s. Patent No. 5,897,545; u.s. Patent No.
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5,957,908; and U.S. Patent Publication No. 2003/0233082 Al,
all of 1.1hich are here~y incorporated by reference in for this ~
regard.
·5 DESCRIPTION
,, • - r- ~ _- . ' . ' ' · .. , ·;. :.:·: · , ,..., Lt,; g\"n,eriJ).,, :· I)';Jnl·loven. l·lebs. Hh:Lch a:c.e .to be used as
.)_t-. . ~ ·. ~1: . : ; f:: :.:· ''•; ;'·.~ :. ~ \. ' . ::· . ·~ : :·_ -~- .
receiving components are not completely bonded,. e. g., not 100%
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fiber-to-fib.;r bonds. Because the fiber-to-fiber bonds
typically render the bonded areas unengageable by ')n engaging
10 component, bonding the nomwven 1·1eb completely can yield ,a
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poorly performing recei vi fig component. Therefore, the
protrusions extending oub1ard from t)Je outer surface of the
calendering roll are typically spaced apart such that a
particular bonding pattern is created in the nomroven.
15 It may be desirable to have large, open, unbonded areas
to assure 'that wherever a hook from the engaging component is
.placed an unbonded fiber or an tinbonded portion of a bonded
fiber is available to engage the hook. However, a bond pattern
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creating· large, open, unbonded areas can have reduced strength
20 in a cross machine direction because of the reduced number of
fiber-to-fiber bonds in the unbonded areas. To compensate,
some bond patterns can create fully enclosed areas e, g., fully
bonded fibers surrounding unbonded fibers. However, a bond
pattern VJhich creates fully bonded fibers surroundi;ng unbonded
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fibers can reduce the; likelihood that a hook from an engaging I
component 1·1ill find an unbonded fiber with 1·1hich it can engage.
Addi tion.ally, the bond pattern can negatively impact the
quality of the fiber-to-fiber bonds. For, example because
5 conventional bond patterns do not completely bond the nom1oven
l•leb, the pressure applied to ·the nom10ven Heb as the non.woven
web pass~·s through the calendering rolls can fluctuate. In
some cases; the pressur;e fluctuat'ions can cause higher
pressures at some fiber-to-fiber bond sites and cause lower
10 pressures at other fiber-to-fiber pond sites. The higher
pressur'e·can result in overbonding or even cutting through
fibers (which Heakens the resulting Heb). The lo~1er pressure
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may result in a reduced percentage of bonded area being formed I '. . '·I
compared to the desired percentage of ~ended area, ioHer bond I
15 strength and/or loHer bond quality. Additionally,. ·the lo>~er
pressure may cause reduced streng.th in the cross machine
direction,
Consequently, there is a need to provide a ·fastening . .. . I
' system VThich includes a receiving component havi:ng a bond!
20 pattern which reduces the pressure fluctuations experienced
by the receiving component during processing Hhile maintaining
sufficient areas of unbonded fibers and/or unbonded portions
of bonded fibers.
A nonwoven web in accordance with the subject invention
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can be used for a receiving component (e.g., female component)
of a fastener. The nonvroven Heb can have a sufficient
fasteningstrength (e.g., peel strength, repeatpeelstrength,
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and tensile shear strength) and high mechanical strength in J
. 5 both of machine direction (MD) and cros;machine dir~ction (CD) ·I
The nomroven
~ings, Hherein like reference numerals are used to .refer
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to like elements throughout. In the following de~cription,
for p·urposes of explanation:; numerous specific details are set
forth in. order to prpvide a thorough understand:icng of th'e
subject invention. It may be evident, hoHever,, that the
invention can be practiced1·1i thout these specific details. In
other instances, well-known structures and devices are shown
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20 in block diagram form in order to facilitate d'escribing the
invention.
As shol'ln in Fig. lA, a fastening system 10 containing the
nonHoven web in accordance Hith the subject invention may
contain an engaging component 12 and a receiving component 100.
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The engaging component 12 may contain a plurality of hooks 14
1·1hich extend outHard from: ·an engaging surface 16. The
receiving component 100 may contain i'i plurality of loope<:!
fibers (not shoHn) Hhich are capable of becoming entangled \•lith
5 the plurality ·Of hooks 14 ·of the engaging component 12.
Examples of suitable engaging components are discussed
hereafter.
The fastening system 10 can be ut.ilized in a variety of.
consumer and commercial. goods ~o~hich may benefit from having
10. the fastening system of the subject invention. Some examples
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of articles ~o~hich can utilize the fastening system·of the
subject invention include disposable absorbent articles, body
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~o~raps, packaging, an. d industrial conne.c tions -for abra'sive pads, i!
·medical products, and the like.
As sho~m in Fig. 1B, .. the nom10ven ~1eb 100 that can be
used for a receiving component may contain a plurality of bond
lines, a bond zone 130, and a plurality of consecutive m1eep
regions. In some embodiments, the ·nomwven ~o~eb 100 may
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contain a first bond line 110, a second bond line 112, and a i
20 third bond line 114. Embodiments having more than three bond
lines and less than three bond lines are contemplated.
·The first bond line 110, in some embodiments, c.an be
disposed adjacent to a first end edge 151 and the second bond
line 112 can be disposed adjacent to the first bond line 110.
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The t·hird bond line 114, in some embodiments, can be disposed I
. adjacent to a second end edge 152 and adjacent the second bond
line 112. In some empodiments, the first end edge 151 and the
second end edge can extend from a first longitudinal ed.ge 17 0 1
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5 to a second longitudinal edge 172 .in a direction generallyI
parallel to a lateral axis.162. j
As shown, in some embodiments, the first bond line 110, I
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the· second bond line 112, and the third bond line 114, can i
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·extend in a first d:Lrection 1222 from a •.first longitudinal edge i
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10 1.70 to a second longitud~nal edge 172 of the receiving I
component 100. In some embodiments, the first direction 12221
. can be ~enerally par.allel to' the lateral axis 162. · The first i
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longitudinal edge 17 0 and the second longitudinal e.dge 172 can !
extend beh1een the first end edge 151 ·and the second end edge
152 in a direction generally parallel to a longitudinal axis I
160. 1
The nomwven 1-1eb 100 further contains the bond zone 130 ·I
The bond zone 130 circumscribes more than one bond line. For I
example, as shmin some ernbodirn€nts, two s·Heep regions,; e. g., 142
and 144, ~ontain a porti•;,;· of the first bond line ilo and the
~econd bo~d lirie 112. Depending on the sizes of the sl'leeplI
regions, one or :Uore sweep ·regions may contain portions of more I
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than one bond line. Embodiments containing more than fourj
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S\•Ieep. regions and fe\•Ter than four S\•Teep regions are i
contemplated.
Because the sweep regions 140, 142, 144, and 146, are
, consecutive, each sm in Fig, 2A) as the
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Heb of fibrous material 275 (shmm in Fig. 2A) passes through I
the nip. In some embodiments, the contact length·250 can be. 1
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determine<;! via the Hertzian equation bel01·1. The Hertzi·an I
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equation assumes that the calendering rolls 202 a·nd 204 are 1
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15 made from homogeneous, isotropic material, and further assumes I·
the val1idi ty of Hooke's laH. Other assumptions incl.u.de that
the calendering rolls 202 and 204 have equal diameters; that
the calendering rolls 202 and 204 are created from material
l·lhich has the same elastic modulus; and that the Vlidth 220 of
20 the calendering rolls 202 and 204 are at least as 1-lide as the
lddth.l7 7 ( shmm in Fig. lB) of the sHeep regions. The contact
length 250 can be found via the folloHing equation:
X=
25
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where X is ~ the width of the contact area 250;
. R is the radius of the calender roll 202 or 204 in millimeters;
F is the force applied in Nm1tons I mm;
E is the elastic modulus of the material of the calender rolls I·
.202 and 204;
L is.the \•lidth of the c·alender rolls 202 and 204 (as shown 220);
and
v· is PQisson's ratio.
Where the calendering rolls do not have equal .diameters,
oneskilledintheartcouldrederivetheaboveequationtaking
into account the unequal diameters of the calende:<;ing rolls.
e·lastic moduli of the calendering rolls.
of steel, the elastic modulus E can be equal to about 210,000
· N/mm2
, Poisson's ratio can be about 0:3, and applied force F
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can be between about 20 N/mm to about 150 N/mm. As mentioned
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20 above·, X is equal to about!.> of the contact length 250. Thus,
multiplying X by two provides the contact length 2 50. In some
. emb~diments, the contact ai:ea 250 can be in a range from about
0. 1 mm to about 1. 2 mm or any individual number Hi thin the range.
In some embodiments, the contact area 250 can be in a range
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from about 0.7 mm to about 1.0 mm.
One advantage of the. subject invention is that because
of the ratio of larger bonded area to lesser bon4ed of the
subject invention, . pressure fluctuations during the
5 calendering process can be reduced. For example, in
COm;:entional receiving COmponents \·There bond areas Vary among
s1·ieep· regions by more tha·n 2000%, the contact area of the
calendering' rolls producing these bon'ded areas varies by more
than 2000% also. Consequently, if the· force applied to the
10. calender rolls is cons~arit, the pressure applied to a web of
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fibrous material as it pa,;ses through the nip of the calender
rolls varies by more than 2000% as well. In conventional
receiving components pressure fluctuations of greater than
2000%. can occur 'i·lhen some· sto~eep regions contain a 0% bonded
15. area, thereby yielding a ratio ·of larger bonded area to lesser
bonded area Hhich is infinite. The zero percent bonded area.
·can occur, for example, •1hen a first bond line and a second
bond line are separated by a finite distance in a direction
generally parallel to the longitudinal' axis of the ·receiving
20 component l·lhich is equal to at least the length of a sweep
region. As another example, pressure fluctuations ;of greater
than 2000% can also occur where there is too much overlap
bet~een bond lines or too little. The overlap between bond
lines is discussed further with regard to Figs. 3A, 3B, and
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From a process perspective, the pressure fluctuations
of greater than 2000%:can cause process instabilities. For
ex'ample, the extreme pressure fluctuations can cause premature
failu.re of the protrusions on the calender rolls.
::: )i'rom. a product/material perspective
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pressure::flu:ctuat:con'l .:of ·greater than· 2000% are: also not
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·typically desir<>ble. : F.or example, a· sHeep region ,having 0%
bonded area can provide loH shear. capability and p6tentially
poor refastehability res~lts. Specifically, because less
loose fiber ends are bonded 1dthin this sHeep region, fuzzing·
can result during multiple. openin<:r and closing cycles 1·1ith
suitable engaging components.
Also, s1·1eep regions having 0% bonded area can reduce the
strength in a direction parallel to a· lateral axis of the
receiving component.. The lateral axis of the receiving
component, in some embodiments can be associated Hith the
direction of shear in many instances. For example, in a
fastened state, the lateral axis of the receiving component
20 can be generally parallel to the direction of shear. For.
example, referring to Fig. SA momentarily, in a fastened state, .
shear forces can act along a primary direction of shear 775
Hhich is generally parallel to a lateral axis of a receiving
component 740. \'/here there is no overlap between ·adjacent
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bcind lines, the. receiving component material in between
adjacent bond lines remains free to move i·li th the applied shear
force.
In contrast, l·lhere the overlap between bond lines causes
pressure fluctuations of greater than 2000%, the concentration
of·fiber-to-fiber bond sites in the region of overlap will
generally .provide poor fastenabili ty results. For exampl'e,
as stated previously, engaging components generally are not
able to engage receiving components at the bonded areas.
·Additionally, the pressure fluctuations of greater than
2000% can also cause variable bonding quality, as discussed
previously. . When pressure fluctuations are greater than
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2000%,· fiber-to-fiber bonds in the lesser bonded area sweep I
regions experience higher pr'essure than large} bonded area· I
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sweep regions and can incur holes because of the. higher
pressure. Also, the fiber-to~ fiber-bonds in the .larger
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bonded area sweep re~ions can experience lower pressure. than ·i
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lesser bonded area sweep regions and can iricur less
fiber-to-fiber bonds because of the lower pressure.
20 Specifically, the lower pressure, in some cases, can merely
compress fibers instead of actually bonding them.
As shovm in Fig. 2C1 a receiving component 30 Has
constructed in accordance with the subject invention and
incurred some defects, e.g. r 32, 3 4. 3 6. 38, 40, and 42. ·I
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· HoHever, Hhen the bond ratio of the receiving component 30 is
about 20 or less, for example, about 1.8, the number of the
defects is Hi thin an all01iable range. In contract, 1·1hen the
bcind ratio is above 20 or more, an unacceptable amount of
5 de.fects may occur in a receiving component.
In contrast 1-lith conventional receiving components, a·
receivin.g component containing the nonwoven web in kccordance .
~lith the subject invention reduces pressure fluctuations belm1
about 2000%. The reduction in pressure fluctuaticln, in part,
10 :is accompiished by ass.urinp that a bond area of the receiving
c~mponent contains a plurality of SI·Jeep regions Hhich each have
some finite amount of bonded area. Additionally, the s~ieep
regions for receiving• components containing the nom10ven l·leb
in accordance \•li th the subject invention contain bonded area
Hi percentage~ Hhich reduce pressure fluctuations belo0 about
2000%. 'I
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There are several factors 11hich can impact the ratio of 1.
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larger bonded area to lesser bonded area. Some factors
in·clude the overlap of the bond lines, in some embodiments,
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20 the orientation angle of the bond lines, the period of the bond
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lines, and in some embodiments, the orientation df the bond
lines during processing. The orientation of the bond lines.
during processing is discussed further in regard to Fig. 6.
As sh01m in Fig. 3A, the overlap 320 is a distance beb1een
30
a first reference line 302 and a second reference line 304.
In some embodiments, the overlap 320 is generally parallel to
the longitudinal axis 160 and generally parallel to a second
direction 1223. The first reference line 302,1 in some
. '
5 . embodiments, can be drm·m betl-reen t;ro imrardmost points 308
10
15
20
and 310 on the first bond line 110 and can be generally parallel
to the lateral axis 162. In some embodiments, the second
reference line 304 can be dr.awn betl-reen ti-ro imrardmost points
312 and 314 of the second bond line .112 and can be generally
parallel to the lateral axis 162. In some embodiments, the
imvard most points 308 and 310 of the first bond line 110 can
be ·the· points nearest the second bond· line 112. Similarly,
in some embodiments, the irii·rardmost point 312 and 314 of the
second bond line 112 can be the point nearest the first bond
line 110. Where the first bond line 110 does not intersect
the second reference line 3 0 4, and \·There the second bond line
112 does not intersect the first reference line 3·02, there is
·no overlap bet1·1een the first bond line 1.10 and the s'econd bond·
line 112.
Additionally, Fig. 3A shows a period 330, an orientation
angle 350, bond line spacing 370, and a bond lipe thickness
360. In some embodiments, the period 330 can be !~he smallest
interval after \•lhich a periodic function takes the same values.
As shm·m, in some embodiments, the period 330 can be a distance
31
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frbm a first peak 332 of t6e third bond line 114 to a second
peak 334 of the third bond line 114. In embodiments' \•/here the.
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first bond line 110 and the second bond line 112 are similar
"· to the third bond line 114, the period 330 cari be found
5 similarly for the 'first bond l.ine 110 and the second bond. line
112 ... An orientat~on angle 350, Hhere a P'1rtion of the first
' ' : ,-· .: •' . . ' .· '
bond line 110 intersects, the ,first reference line 302, is also
shoNn.
~ -
The bond line spacing 370 is the di~tance beb1een the
10 first and :Second bond lines 110 and 112. For examp1e, in some
15
20
embodiments, the bond line spacing 370 can be measured from
the inwardmost point 308 of the first hand line 110 to the
oub1ard most point 372 o·n:· the second bond line ,112. The
outward~ost point ~7~ on the second bond line 112 1 in some
embodiments, can be the point nearest the third bond line 114.
Ii:l some embodiments, the bond line spacing 37 0 can be generally
I parallel': to the longitudinal .axis 160.
can l;le used. '"·' mmp'"'· COo opoo; "' ::·: ~::::::·,::·::,:: I
lines can be in a range from about 1 mm to about 20 mm or any j·
individual·number Hithin the range. As yet another example, j
the spacing 370 can be beh1een about 3 mm and about 18 mm. As
yet another example, the spacing 37 0 can be. betl·1een about 6
mm and about 12 mm.
Similarly, any suitable bond line thickness 360 can be
32
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thickness 360 can be in a range from about o·. 2 mm to about '5 I
utilized. For example, .in some embodiments,
mm or any individual number within the range. In ·some
embodiments, the bond line thickness 3 60 can be ~n a range from
5 about 0. 5 mm to about 2 mm. In some embodiments, the bond line
thickness 360 can be in a range from about 1 mm to about 1.5
mm.
Any suitable period 3.3'0 can be used in conjunction with
the subject invention. For example·, in some embodiments, the
10 period 330 can be in a. range from about 1 mm to about 20 mm
or any ·individual number within the range. Ill some
embodiments, the period.330 can be in a range from about 1.5
mm to about 15 mm. Ih some ·embodiments, the per:L,od 330 can
be in a range from 'about 5 mm to about 12 mm.
15 The effect that the overlap of the bond lines has on the
ratio of larger bonded area to lesser bondect area is
illustrated in· Table 1. Table 1 contains prophetic examples,
and all calculations contained in Table 1 are based on a zigzag
bond line pattern similar to the bond line pattern sh01m in
20 Fig. 1.
Table 1
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Example if . 1 2 3 4 5
Line .Thi'akneee (mm) 1 o·.5 0.5 1 0.5
orientation angle (degrees) 63.4 63.4 63.4 63.4 63.4
Period "T" (mm) . .9.3 9.3 9.3 9.3 9.3
line spB.qing (nun) 6 6 12 3 3
Contact width· (mm) 0. 25 0.25 0.25 0.25 0.25
Overlap (mrn) 5.52 4.4 0 8.52 7.4
Overal~ Area, % Bonded· 37.2 18.6 9.3 74.4· 37.2
' Larger -Ar.ea (nun"2) 1.12 0.56 0.28 1. 75 0.91
Lesser Area {nun"2) . 0.56 0. 28 0.00 1. 68 0. 84
~arger/Lesser Ratio 2.00 2.00 infinite 1.04 1. 09
' .
i·fax Area, % Bonded 48.10 24.05 12.03 75.23 39.15
Min Area1 % Bonded 24.06 12.03 0.00 '72.16. 36.08
Max/Nin Ratio (%/%) "2. 00 2. 00 infinite 1. 04 1. 09
As shown in Table 1 and as discussed previ6usly (~ee
Example 3A), 1·1here the overlap of the bond lines :iis equal· to
zero, the ratio of larger bonded area to lesser bpnded area
5 Can be- infinite in some instances. ln contra~t, in the
embodiments of th"e subject invention, the first bond line 110
( sh01m in Fig. 1) and the second bond line 112 (shown in Fig.
l) overla"p one another by a finite amount. As shOI·In, see
Examples 1 and 4, as the overlap increases, the ratio of larger
10 area to lesser area decreases.
The overlap can.be impacted by the thickness of the bond
lines. For example, in Table 1, as the thicknesses of the bond
lines decrease, the overlap betl-1een the bond lines can
similarly decrease (see Examples 1 and 2). Additionally, the
15 thickness of all the bond lines in one pattern can be changed
34
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as de_sired to adjust the overall percent bonded area of the·
bond pattern. Similarly, the overlap can be impa<;ted by the
spacing of the bond lines. For examp~e, in Table 1, as the
spacing bet1-1een the b,ond lines increase, the overlap bett-1een
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the' bond lines-decreases (see Examples 1 and 4; 2 and 5).
The effect that the orientation angle 350 has on the r·atio
of larger bonded area to lesser bonded area is illustrated in
Table 2 .. Table 2 contains prophetic -examples, and all
calculations contained in Table 2 are based on a zigzag bond
10 line pattern similar to the bond line pattern sh01·m in. Fig.
1.
Table 2
EXAMPU_ #, 6 7 8 9 10 11
Line Thickness (Jllll\) 1 1 1 1 1 1
Orientation Angle 75 65 60 55 45 65.082
(degrees)
Period (mm) 9.3 9.3 9.3 9.3 9.3 9.3
Line Spacing (111m) 18.7 9.8 7.53 . 5. 86 3. 54 10.01
Contact Length (mm) 0.5 0.5 0.5 0.5 0. 5 o.s
Overlap (mm) 2.52 . 2.54 2;52 2.52 2. 52 2.37
Lasser bonded area (%) :!;4. 51 23.73 24.83 26.25 30.41 23.71
Larger "bonded area (%) 22.26 ·25. 45 31.34 38.01 53.87 23.71
Ratio Larger/L~sser 1.53 1. 07 1.26 1. 45 1. 77 1. 00
Overall Area % Bonded 20.7 24.1 25.0 29.0 30.7 23.71
_For the examples shmm above, the orientation angle 350
15 (shown in Fig. 3A) is changed for a zigz.ag bond pattern similar
to the bond pattern sh01·m in Fig. 1. As shmm, the orientation
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angle jso (shown in Fig. 3A) was manipulated from about 75
deg:~;ees to about 45 degrees, Nhile maintaining an overlap of
about 2. 5 mm for most" examples. In' order to ensu:r;e an equal
5
some examples, the period and the bond line thickness Here kept
constant.
In. El2 13 " >5 16 17 18 19 20
Line Thloknese (~) l l 1 1 1 1 1 1 1 .
Orian~ation.angle {degrees) '• 60 60 60 60 60 60 60 60 60
Pe:dod (rrm} _ 5 6 7 ' 9 . ' 9 10 ·u
Line Spaoing (~) 6 .2 6.2 6.2 6.2 6.2 7 7.9 '. 7 9.6
-Con~_ot Length (~) 0.5 0.5 0. 5. 0.5 0.5 0.5 0.5 0.5 0.5 I Amplitude 3,17 3; 6 4. OJ 4.46 . 4 ."9 4.46 4.9 5.33 5, 76
OVedap (rrm). 0.13 1.00 l. 66 2.73 3,59 1.. 93 1.89 1.96 1.93
Laseer Axea Bonded (\) 6.16 19.11 30.12 28,87 25.66 27,83 24.3 22.63 20.22
Larger Axea Bonded {t) 46,19 38.49 32.99 39.38 4 6.00 28,87 25.66 23,09 20.99
Ratio larger/lesser Area Bonded 7.50 2.01 1. 07 1.36 1. 79 1.04 1. 06 i 1.02 1. 04 -
. Overcall Al::ea Bonded (\) 32.3 32.3 32.3 32.3 32.3 213.6 25.3 23,0 2Q.B
At an'equal percentage of the total bonded area, the
··determined larger bonded area to lesser bonded area ratio. is
at 1.· 07 for a period equal to about 7. The overlap for Example
·13 can be about· 1. 9 mm. Based on the data in Table 3, in some
~mbodiments, the period can range from about 5 mm to about 11
mm or any number Hi thin the range. In other embodiments, the
period can range from about· 6 mm to about 8 mm. In yet other
embodiments, the period can be about 7 mm.
As shoHn. in Examples ·17-20, the bond line spacing can
be adjusted such that overall bonded area is impacted. In some
embodiments of the subject. invention, the overall bonded area
can be in a range from about ·10% to about 50% or any individual
number Hithin the range. In other embodiments, the overall
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15 percentage of bonded area can be betwe~n about 2~~ to about
3'0 %- • In yet other embodiments, the overall percentage of
bonded are<;~ can be betHeen about 20% to about 25%. In other
embodiments, the overall bonded area can be less than about
38
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40% \•lhiLe the bonded a'.'ea in any sweep region is less .than about
60%. In other embodiments, the overall bonded area can be less
than about 30% l·rhile the bonded area in any sweep region can
·be .less than about 50%. In yet other embodiments, the overall
· 5 bonded area can be betv1een about 20% to ·about 30%: l·rhile the
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bonded area in any sweep region is less than about 40%.
·As stated previously, the data in Tables 1, ,2, and3,
\·rere ):lased on a zigzag bond line patterns similar. to the bond
line patte~il sho~m in Fig. 1. Hol·rever, one skilled in the art
10· couLd calculate the vaLues for the listed parameters in Tables'
i, 2, .a..n d 3, for any given:bond line pattern or variations
theieof. For example; for simple geometries, e. g.,
co·nsisting of angled and connected straight lines, the values
shown in Tables 1, 2, and 3, can be calcuLated using the
15 geometric and trigono.metric relationships of the angled and
connected s.traight lines as done for the bond line patterns
shoHn heretofore. For more complex patterns, for example,
those sh01m in Figs. 4A-4K, or bond line patterns. including
shapes s,uch as those of Figs. 5B-5E, the values of Tables 1,
20 2, and 3, can be obtained by utilizing computerized image
analysis.
In computerized image analysis,. the bond pattern in
question is digitized such that a color contrast can be
reliably measured to dete.rmine Hhere bonded and unbonded areas·
3'9
are. For example, unbonded areas may be represente,d as 1•1hite
pixels and bonded areas may be represented as black .pixels.
The number of pixels representing a bonded area can pe counted
and compared to number of pixels representing an unbonded area
5 to determine the percentage of bonded area. Similarly, the
period, overlap, bond line thickness, orientation angle, and·
line sp~cing can also be.measured using computerized image
analysis,
Additionally, any data or trends discussed in regard to
10 Tables 1, 2, arid 3, are pertinent to the bond line patterns
analyzed, e.g., zigzag pattern. Consequently, any data
and/or trends ·discu.~sed regarding Tables 1, 2, and 3, may not
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be· valid for Dther bond line patterns.
Figs. 3B and 3C sho>~ another exemplary nonwoven 1·1eb. Fig.
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3B illustrates a partial top vie<·r of an exemplary nonwoven web
for use as a receiving fastener component of the subject . I
invention, and Fig. 3C illustrates an enlarged view of the 1
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non~roven Heb of Fig. 3B.
·Ill Fig. 3B, embossed portions 1, 1·rhich is sh01-m by the
20 shaded area, correspond to the area 1-rhere the crimped composite
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fiber is thermally compressed and/or fused by an embossing roll.
Non-embossed portions 2 are areas between the embossed
portions 1 v1here the crimped composite fiber is n.ot thermally
compressed and/or fused and.the crimped composite fiber forms
40
loops that undergo an engagement Vlith a hook of an engaging
- compon.ent.
While Fig, 3B illustrates a portion of the nomwven web
for u.se as a rece:l ving :t;astener component, the embossed portion
5 · 1 is typically formed over ·the whole area of the nor:nwven Vleb
for use as a receiving fastener component, Furthermore, the
general. shape of the nonVloven Vleb for .use as a receiving
fastener component can be any suitable shape depending on the
application and can be. any sui table sheet-like shape, For·
10 example, a receiving fastener component containing the
·nomTClven V!eb in accordance l·lith the subject invention and an
engaging component containing a hook are· previously fixed on
h10 surfaces that are to be connected by, for exampl(', bonding
and seHing, respectively, andean be used in a manne·' r that the
15 two surfaces are refastenably connected by hookin~ the hook
of the ·engaging . component on the loop of the receiving
component.
As shoHn in ·Fig. 14,, the cross section of the nomroven
\•reb for the receiving fastener component shovrs recessed
20 embossed portion 1 compared Vlith the non-embossed portion 2.
In one embodiment, the difference in height bebreen the
non-embossed portion 2 and embossed portion 1 is in. the range
of about 0.1 to about 2 mm. The shape of the cross section
of the projected portion· of the. engrave of the embossing roll
41
used f.or forming the embossed portion .1' can be any suitable· . I
shape, for example, trapezoid.
As shmm in Fig. 3B, the embossed portion 1 of the
nonYioven 1•1eb for the receiving fastener component in this
5. example may contain an embossing pattern containing zigzag
unit patterns 3 that a.re disposed in an MD (Machine Direction)
I
·at predetermined intervals, the zigzag unit patterns 3 being . . .
continuous in substantially parallel to a CD (Cross t1achine
10
Direction) of the embossing roll .. Although not shmm, the II
zigzag unit patterns . 3 ··can be disposed in the CD at
I
predetermined .intervals, the zigzag unit patterns 3 being !
continuous in substantially parallel to the MD.
As shmm in Fig. 3'C, the unit pattern 3 contains zigzag
·unit patterns C()ntaining a plurality of first diagonal lines
15 4 an·d a plurality of second .diagonal lines 5 that are disposed
alternately, the plurality of first diagonal lines 4 being
disposed generally parallel with a CD and being inclined to
a first side at about the.same angle relative to the MD, the
second diagonal lines being disposed generally parallel 1·1i th
20. the CD and being inc];:ined to a second side at about the same
angle relative to the MD. The first diagonal lines 4 and second
diagonal lines 5 are continuously connected .alternately at an·
end portion 4a of the first diagonal lines 4 and an end portion
5a of· the second diagonal lines 5.
42
Further, as shoem in the Figure, a contact point 6 in
this example is an outermost point of the contact portion of
the first diagonal line 4 and a second diagonal line 5.
Furthermore, anJapex 7 is an outermost point of both sides·
5 the zigzag of the unit pattern 3, and in this example, the apex
is· the same point as the contact point 6, 1·1hich is an outermost
point of the conta.ct portion of the fir:st diagonal line 4 and
a second diagonal line 5.
As shotm in Fig. 3C, in this example, a, part of uni.t
10 pattern 3 can be contained inside a triangle that is formed
.by adjacent three contact points 6 of the first diagonal line
4 and the second diagonal line 5 (triarigle 8 indicated by the
dotted lines in Fig. 3C) of the unit pattern 3, the part of
unit -pattern 3 is adjacent to the triangle :Ln. the MD.
. 15 In one embodiment, a ·ratio of VldW; :is from about 0.1 to
about 10' wherein .the l'li'dth wl is a \•lidth bebleen the apex 7
on one side and the apex 7 on the. other side of the unit pattern
3 in the MD and the Hidth W2 is a width between adjacent contact
points of the first diagonal line and second diagonal line in
20 the co: In another embodiment, the ratio of W1 /W2 is from about
0.5 to about 2.0.
When the aforementioned conditions are satisfied, the
receiving fastener component has sufficient fastening
strength in all of peel strength, repeat peel strength, and
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tensile shear strength, and at the same time, has high
me·chanical strength in both of MD and CD. ·
In particular, ·it· is desirable. that the receiving_
fastener component has sufficient fastening strength in the
5 repeat peel strength and mechanical strength in the CD, and
it i-s believed that ;lith respect to the repeat peel strength
and mechanicaL strength in the CD, overlapping the adjacent . 1
unit patterns 3 each other in the MD. by including a part cif
the. uni-t pattern 3 in t]).e inside of the adjacent triangle 8
10 formed by three adjacent. contact points 6 is effective.
In one embodiment; the· Hidth W1 , 'lhich is a width in the
-!10 betl·leen an ape:x; 7 on one side and an apex 7 on th·e other
side of the unit pattern-3, is about 3:mm ·or more and about
50 mm or less. In another embodiment, the <·lidth lilv which is
15 a l'lidth in the ·MD betHeen an apex 7 on one side and an apex I
7 on the other side of the unit pattern 3, is about 5 mm or
.. more and about· 20 mm ·or less. I
I
In. one embodiment, the distance w;, Hhich is a distance
betlveen adjacent· unit patterns 3, is about 1 mm or more and
20 about 20 mm or less. In another embodiment, the distance w3 ,
v1hich is a distance betv1een adjacent unit patterns 3, is about
2 mm or more. and about 8 · mm or less.
In one embodiment, the Nidth of line v/ 4 of the unit pattern
3 is in the range of about 0.5 mm or more and about 1.5 mm or
44
less.
In 6ne embodiment, the ratio of the ·embossed area, Hhich
is the value obtained by multiplying 1.00 by the area ratio o:f"
. the embossed portion 1 to the sum of the .area' of embossed
5 portion 1. and the area of· non-embossed portion 2,: is in the
range of about 10% to about 50%. In another embodiment, the
.. ratio of. the embossed area is in the .range' of about 20% to about . '
30%.
When the aforementioned conditions are satisfied, the nom10ven
10 Heb has bulkiness as \•/ell . as high fastening strength and
. '
.mechanical strength.
As sho;m in F:i_gs. 4A-4K, the ove'r1ap beb1een adjacent
bond lines can be achieved in a number of different manners.
For example, as shoHri in Fig. 4A, a receiving component 400A
15 constructed in accotdance .l·lith the subject invention may
contain a first bond line 410A and a second bond line 412A .
. The first bond line 410A and the second bond line 412A may each
contaid a plur.ality ~f re_peating units 510A. The repeating
units 510A of the first bond line 410A and the second·bond line
20 4).2A, in some embodiments,. can overlap one another via
extensions 520 .generally extending in a direction parallel to
the longitudinal axis 160 from each repeating unit ~lOA. Also,
as shm·m, in some embodiments, the first and the second bond
lines 410A and 4128 may contain extensions 520 11hich extend
45
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in a direction gen~rallypa1:allel to the longitudinal axis 160
in between repeating units 510A.
In s·ome· embodiments, ·the extensions 520 may extend at
an angle Hith respect to the longitudinal axis 160. In some
5 embodiments, the extension angle 1350 ( shovm in Fi,,g. 4K) can
be in· a range from greater than about 0 degrees to· less than
about 18 0 degrees or-any individual number ~o~i thin the range.
In yet other. embodiments, the extension angle 135 0 ( shotm in
Fig·. 4K) can be in a range of about 30 degrees and less than
10 or equal to about 150 ·degrees. In yet other embodiments, the
.. . ' ·
extension angle 1350 can be·in a range from about 60 degrees
to about 120 degrees,, In some embodiments, the· extension
angle 1350 of all bol)d lines. can be similar. In some
embodiments, the extension angle 1350 can vary bet\oreen the bond
15 lines of a bond pattern. Additionally,. in some embodiments,
the ·exte~sion angle 1350 can vary among repeating u:nits 510A.
· In other embodiments, as shotm in Fig. 48, a receiving·
component 400B construct"d in accordance vrith the subject
invention may contain a first bond line 41GB and a s,econd bond:
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20 ·line 412B. Similarly, the first bond line 410)3 and 'the second
bond line 412B may contain a plurality of repeating ·units SlOB
having extensions 520. The extensions 520 of the repeating
units SlOB can be configured similarly to the extensions 520
of the repeating units 510A. Additionally, as sh01m in Fig.
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4B, the bond lines of the .subject invention are not limited ' . .
to rectilinear repeating units SlOA. For example, as' shown,-
in some embodim<3nts, the b_ond lines may contain a· p'lurality
of repeating units SlOB containing curvilinear segments. As
• 5 _ sh01·m, the repeating units SlOB appear sinusoidal :in nature.
Examples of other repeating units are sh01m in Figs.- SA-SE.
Fig. 4C illustrates another exemplary embodiment of a
nonwoven web for use as the receivin-g_ fastener c01nponent in
·accordance with th':' subject invention. ·Fig. 4D illustrates
10 an enlarged vie1-1 of a portion of the nomwven 1•1eb of Fig. 4C.
'
It is to be appreciated that the components corresponding to
Figs. 3B and 3C are.indicated by the same reference numbers
in Figs. 4C and 40.·
The nonwoven 1-1eb for a receiving fastener component in
15 this example contains essentially the same structure described
previously, and, as shown in Fig. 4C, the nomwven web contains
. . i .
an embossed portion 1 containing zigzag unit patterns 3 that 1
a·ie disposed in an MD at p;r:edetermined intervals, the zigzag
unit patterns 3 being continuous in substantially parallel to
20 a CD uf the embossing roll.
In this example, as shovm in Fig. 40, the unit pattern
3 has a curvature at the apexes 7. In this way, the apexes
of the zigzag of the unit pattern 3 in accordance with the
subject invention may have a slight roundness.
47
Fi,g. 4E illustrates a top view of a portion of another
exemplary embodiment of a no;., woven web for lise as the. receiving
fastener component in accordance 1·1ith the subject invention,
·and Fig. 4 F illustrates an ·enlarged view of a portion of the
5 nonwoven web of Fig. 4~. It is to be appreciated that the
components corresponding to Figs. 3B and 3C are indicated by
the same reference numbers in Figs. 4E and 4F.
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The nonwoven ;reb for a receiving fastener co~ponent in I
th,is example has essentially the same structure as the I
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10 above-mentioned embodiments,. arid as shi:mn in Fig. 4E, the
non~10ven 1·1eb contains an emBossed portion 1 containing zigzag
unit patterns .3 that are disposed in an MD at predetermined
'intervals, the zigzag unit patterns 3 being continuous
generally parallel with a CD of an embossing roll.
15 The general shape, method for using, shape of' the cross
S!3ction and range of the various numeric values of the nom10ven
. 1·1eb for a receiving fastener component can be the same
conditions as described inthe above embodiments.'
As shown in Fig. 4F, the unit pattern 3 contains zigzag
20 · unit patterns containing a plurality of first diagonal lines
4 and a plurality of second diagonal lines 5 that are disposed
alternately, the plurality of first diagonal line-s 4 being
disposed generally parallel with a CD and being inclined to
a first side at about the same angle relative to the MD, the
48
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-~ .;
second diagonal lines being_ disposed generally parallel 1·1i th
. , .. ~·
the CD and being inclined to a second side. at about the same
angle relative to the HD.
In this example, the first diagona'L lines 4 and second
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5 dia_gonal lines 5 are continuously connected alternately at an.
·.< ·• ehd po,JC'tion 4a of the .fi:rs,t diagonal lines. 4 and an e,nd portion
·.l - ·_. '·: . •·> .. 'l;- . • . ~ . i ~-- '. . ' '
\ • Sa •of the seconq !lia·gonal lines 5. .. '
Fu)Cther, ail sh01m in the Fig .. 4 F, a 'contact point 6 in
this 'example is an outermost point of the contact portion of
-;
'10 the firs't ·diagonal line 4 and a second diagonal line 5 1·1here
15
the outermost po;Lnt is the~··near side to an apex 7.
Furthermore, the apex 7 is an oute-rmost point of both
sides the unit pattern 3, and in -this exampie, the apex is the
end point Sa of the second diagonal line 5 . •
As shown in Fig. 4F, theadjacentportiontotheendpoint
Sa of the second diagonal li~e ~ slightly ~rejects fro~ the
·contact point 6. That is, the unit pa.ttern 3 contains
extensions 520.
As shmm in Fig. 4F, in this example, a part of unit
20 pattern· 3 can be contained inside a triangle that is formed
by adjacent three contact po.ints 6 of the· first diagonal line
4 and the second diagonal line 5 (triangle 8 indicat-ed by the
dotted lines in Fig. 4F) of the unit pattern 3, the part of
unit pattern 3 is adjacent to the trianile in the MD.
49
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In one embodiment, as described a·bove, a ratio of vl,/l'lz
is about 0.1 or more and about 10 or less, wherein the width
W1 fs. a Hidth beh1een the. apex 7 on one side and the apex 7
on the other side of the unit pattern 3 in the MD and the ,.,idth
5 VIi is a ~idth between adjacent contact points of;the first
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diagcnal line and second diagonal line ln the CD. In another
embodiment·, the ratio of W,/W2 is about 0. 5 or more and about
2.0.
When the aforementioned conditions are satisfied, the
10 receiving fastener component has sufficient fastening
strength in all of peBl strength, repeat peel strength, and
tensile shear strength, and at the same time,'. has high
mechanical strength in both of MD and CD.
Fig. 4G illustrates· a top vieH of a portion of another I I
15 exemplary embodiment of a nom10ven Neb for use as the receiving
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fastener component in accordance with the subject invention,
and Fig. 4H illustrates an enlarged view of a portion of the
• nonwoven web• of Fig. 4G. It is to be appreciated that the
components corresponding to Figs. 4E and 4F are indicated by
20 the same reference numbers in Figs. 4G and 4H.
The nom10ven 1·1eb for a· receiving fastener component in
this ·example has essentially the same structure as the
above-mentioned embodiments, and as shcmn in Fig. 4G, the
nomvoven Heb contains an embossed portion 1 containing zigzag
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unit patterns 3 that are disposed in an .MD at predetermined·
intervals, the zigzag unit patterns· 3 being continuous
generally parallel with a CD of an embobsing roll:
ln this example 1 as. sho1m in Fig. 4H, a unit pattern 3
5 in which an adjacent portion of an end ·portion _Sa of a second
diagonal line S projects from a contact point 6 and a unit
·pattern in 1·1hich an adjacent portion of an end portion 4a of
a first dia~onal line 4 projects from a contact point 6 are
disposed 9lternately in.the MD. The unit pattern 3 contains
1~ ekt~nsions 520 ..
That is, one unit pattern 3 is continuous lvhere the first
diagonal line 4· and first diagonal li.ne 5 are connected
9lternately at the end portion 4a of the first diagonal lines
4 and an adjacent portion of the end portion Sa ~f the second
15 diagonal lines 5.
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And, another unit pattern 3 that is adjacent to the above
unit pattern 3 is continuous 1·1here the first diagohai·line 4 · I
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and first diagonal line ~ are connected alternately at an I
adjacent portion of the end portion 4a of the first_ diagonal
20 lines 4 and the end portion Sa of the second diagonal lines
5.
A part of unit pattern 3 can be contained inside a
triangle that is formed by adjacent three contact points 6. of
the first diagqnal line 4 and the second diagonal
CLAIM:
1. A receiving component containing a nom10ven 1veb (100) for
a mechanical fastening system, 1·1herein the receiving component
has a longitudinal axis (160) and a lateral axis (162) and the
non\·Toven web comprises:
a.) a first bond line (110) and a second bond line (112)
extending in a first· direction, wherein the second bond line
is disposed adjacent to the first bond line such that a
portion of the second bond line overlaps a portion of the
first bond line and the overlap is generally parallel to a
second direction that is generally perpendicular to the first
directioni
b.) a bond zone (130) circumscribing the first bond line
and the second bond line; and
144,
c.)
146)
a plurality of consecutive s1veep regions
disposed ~o~ithin the bond zone, ~o~herein:
( 14 0' 142,
the length of each sweep region is equal and generally
parallel to the longitudinal axis (160) ,and the 1vidth of each
s~o~eep region is equal and generally parallel to the lateral
axis (162);
at least one S1'1eep region comprises a portion of both the
first bond line and the second bond line and the remaining
sweep regions comprise at least a portion of the first bond
line or at least a portion of the second bond line: and
each sweep region has a bonded area, and the receiving
component has a bond ratio between two sweep regions which is
greater than or equal to 1 and less than or equal to 20.
2. A receiving component as claimed in Claim 1, wherein the
length of each of the plurality of consecutive sweep regions
is greater than or equal to 0.1 mm and less than or equal to
1. 2 mm.
3. A receiving component as claimed in Claim 1, wherein the
first direction is generally parallel to the longitudinal axis
of the receiving component.
4. A receiving component as claimed in Claim 1, wherein the
first direction is generally parallel to the lateral axis of
the receiving component.
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5. A receiving component as claimed in Claim 1, wherein the
bond ratio is greater than or equal to 1.0 and less than 10.
6. A receiving component as claimed in Claim 1, wherein the
bond ratio is greater than or equal to 1.0 and less than 3.
7. A receiving component as claimed in Claim 1, wherein the
nonwoven web comprises at least one layer of fibers.
8. A receiving component as claimed in Claim 1, wherein each
of the plurality of s1-1eep regions has a leading edge and a
trailing edge, wherein the leading edge and the trailing edge
are generally parallel to the first direction, and wherein an
intersection of a bond line 1-1ith the trailing edge creates en
angle which is greater than or equal to 45 degrees.
9. A receiving component as claimed in Claim 8, ~1herein the
angle is greater than or equal to 65 degrees.
10. A receiving component as claimed in Claim 8, 1-1herein the
angle is greater than or equal to 75 degrees.
11. A receiving component as claimed in Claim 1, 1-1herein the
receiving component has an overall bonded area 1-1hich is less
than or equal to 40%.
12. A receiving component as claimed in Claim 11, wherein the
bonded area in any s~1eep region is less than 60%.
13. A receiving component as claimed in Claim 11, wherein the
overall bonded area is less than 30% and the bonded area in
any s~1eep region is less than 50%.
14. A receiving component as claimed in Claim 11, wherein the
overall bonded area is between 20% and 30% and the bonded area
in any s1·1eep region is less than 40%.
15. A receiving component containing a nonwoven web (100) for
a mechanical fastening system, wherein the receiving component
has a longitudinal axis (160) and a lateral axis (162) and the
nonwoven VTeb comprises:
a.) a first bond line (110) and a second bond line (112)
generally extending in a first direction, wherein the second
bond line is disposed adjacent to the first bond line such
that a portion of the second bond line overlaps a portion of
the first bond line, v1herein the overlap is generally parallel
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to a second direction that is generally perpendicular to the
first direction;
b.) a bond zone (130) circumscribing the first bond line
and the second bond line; and
c.) a plurality of consecutive s11eep regions (140, 142,
44, 146) disposed within the bond zone, wherein:
each sweep region extends in a direction generally
parallel to the longitudinal axis (160);
the length of each sweep region is equal and the width of
each sweep regions is equal;
at least one sweep region comprises a portion of both the
first bond line and the second bond line, wherein the
remaining s1veep regions comprise at least a portion of the
first bond line or at least a portion of the second bond line;
and
each sweep region comprises a bonded area, and the
receiving component has an overall bonded area 1·1hich is less
than or equal to 40% and the bonded area in any sweep region
is less than about 60%.
16. A receiving component as claimed in Claim 15, wherein the
overall bonded area is less than 30% and the bonded area in
any sweep region is less than 50%.
17. A receiving component as claimed in Claim 16, wherein the
overall bonded area is between 20% and 30% and the bonded area
in any sweep region is less than 40%.