Claims:1. A formaldehyde free dischargeable flash cure ink composition kit, said composition comprising:
a. a first pack consisting a blend of a polyurethane resin, water, a wetting agent, a softener, a plasticizer, a surfactant, an emulsifier, a filler, a coloring agent, a pH stabilizer and a thickener; and
b. a second pack consisting of a discharge agent;
wherein the contents of said first pack and said second pack are mixed just prior to the application.
2. The kit as claimed in claim 1, wherein the ratio of the amount of said first pack and the amount of said second pack is in the range of 100: 10 to 100:15.
3. The kit as claimed in claim 1, wherein said polyurethane resin is in an amount in the range of 15% to 30% of the first pack, said water is in an amount in the range of 10% to 20%, said wetting agent is in an amount in the range of 10% to 30% of the first pack, said softener is in an amount in the range of 5% to 15% of the first pack, said plasticizer is in an amount in the range of 1% to 15% of the first pack, said surfactant is in an amount in the range of 0.2% to 2.0% of the first pack, said emulsifier is in an amount in the range of 0.2% to 2.0% of the first pack, said filler is in an amount in the range of 5% to 20% of first pack, said coloring agent is in an amount in the range of 3% to 15% of the first pack, said pH stabilizer is in an amount in the range of 0.1% to 1.5% of the first pack, said discharge agent is in an amount in the range of 10% to 20% of the first pack and said thickener is in an amount in the range of 0.2% to 1.5% of the first pack.
4. The kit as claimed in claims 1 or 2 or 3, wherein said polyurethane resin is Alberding U400 N.
5. The kit as claimed in claims 1 or 2 or 3, wherein said wetting agent is at least one selected from a group consisting of white spirit, TEGO® Wet 500 and TEGO® Glide 410.
6. The kit as claimed in claims 1 or 2 or 3, wherein said softener is urea.
7. The kit as claimed in claims 1 or 2 or 3, wherein said plasticizer is at least one selected from the group consisting of monopropylene glycol, dipropylene glycol, tripropylene glycol and 1, 2-cyclohexane dicarboxylic acid diisononyl ester.
8. The kit as claimed in claims 1 or 2 or 3, wherein said surfactant is at least one selected from the group consisting of surfynol® 440, surfynol® 420, surfynol® 104 and surfynol® SE-E.
9. The kit as claimed in claims 1 or 2 or 3, wherein said emulsifier is at least one selected from a group consisting of Rhodacal A4D and Synperonic 13/7-85-LQ-(RB).
10. The kit as claimed in claims 1 or 2 or 3, wherein said filler is at least one selected from a group consisting of calcium carbonate and aluminium silicate.
11. The kit as claimed in claims 1 or 2 or 3, wherein said coloring agent is titanium dioxide.
12. The kit as claimed in claims 1 or 2 or 3, wherein said pH stabilizer is at least one selected from a group consisting of triethanol amine, 10% liquor ammonia and 2-amino-2-methyl-1-propanol solution.
13. The kit as claimed in claims 1 or 2 or 3, wherein said discharge agent is Sera Con P-ACT.
14. The kit as claimed in claims 1 or 2 or 3, wherein said thickener is at least one selected from a group consisting of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose and hydroxypropyl methyl cellulose.
15. The kit as claimed in claim 1, wherein said ink composition provides desirable opacity and brightness of color on a fabric.
16. The kit as claimed in claim 1, whereinthe viscosity of said ink composition is in the range of 20 poise to 100 poise. , Description:This is a divisional application in furtherance to the first application number 476/MUM/2015 with date of filing 08/02/2016 and priority date of 13/02/2015.
FIELD
The present disclosure relates to an ink composition.
DEFINITIONS
As used in the present disclosure, the following terms are generally intended to have the meaning as set forth below, except to the extent that the context in which they are used indicate otherwise.
The term ‘flash cure’ used hereinafter in the specification refers to the process of exposing a printed shirt to a heat source less than that of the curing oven in order to make the ink dry to the touch.
The term ‘discharge agent’ used hereinafter in the specification refers to a chemical that discharges the dark colored dye out of the fabric and leave the fabric in its natural state.
The terms ‘L’, ‘a’ and ‘b’ used hereinafter in the specification refer to the three CIELAB coordinates that represent the lightness of the color (‘L’ = 0 yields black and ‘L’ = 100 indicates diffuse white; specular white may be higher), its position between red/magenta and green (‘a’, negative values indicate green while positive values indicate magenta) and its position between yellow and blue (‘b’, negative values indicate blue and positive values indicate yellow).
These definitions are in addition to those expressed in the art.
BACKGROUND
There are three types of ink systems, plastisol ink system, water based ink system and solvent based ink system, used in various printing processes. Water based ink systems are alternatives to plastisol based ink systems as well as solvent based ink systems, because of their low cost, odorless nature and other benefits. Water based ink systems are environmentally friendly due to lower emission of VOCs (Volatile Organic Compounds).
Further, the formation of solids in a water-based ink is relatively lower than in the solvent based and plastisol based inks. In addition, a water-based ink tends to get absorbed into the textile more than the solvent-based inks, while plastisol based ink sit on the surface of the fibers, and provide a “plastic” feel.
Water based ink system employs the method of discharge printing, which comprises the application of a discharge composition to the material, in a preferred design or pattern. The discharge composition mainly includes a base or a binder and a discharge agent. The discharge agent is applied to the material, which destroys the ground dye in the areas of the application. The removal of the ground dye by the discharge agent is a chemical reaction, which is carried out by applying heat to the material. The printed area of the textile material is left off-white on the ground color. Pigment concentrates, dispersed in the binder, which are stable to the discharge agent, are added to the discharge composition so that a different color replaces the ground color.
The most favored discharge agents are the metal salts of formaldehyde sulphoxylic acid. The disadvantage of using a formaldehyde based discharge agent is that formaldehyde is liberated during the reaction, some amount of which is retained by the fabric. If the fabric is not thoroughly washed, then the amount of formaldehyde retained on the fabric may impose as a health hazard to the bearer or user of the fabric since formaldehyde is a known carcinogen and irritant.
Further, the water based ink compositions have slow color development and a weak color intensity, because the dye cannot fully react with the color developer, and hence, the dyes are dispersed as solid particles in water. Therefore, it is difficult to obtain high color intensity with a water-based dispersion ink composition, even when increased amounts of dye are used.
The previously known water based ink compositions require at least six to eight strokes to be applied while printing on the material, thus affecting the productivity of the printing process.
Therefore, there is felt a need to develop a substitute for formaldehyde based discharge agents and to minimize the number of strokes of water based ink composition during textile printing.
OBJECTS
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
It is an object of the present disclosure to ameliorate one or more problems of the prior art or to at least provide a useful alternative.
An object of the present disclosure is to provide a formaldehyde free dischargeable flash cure water based ink composition kit for printing textiles/fabrics.
Another object of the present disclosure is to provide a formaldehyde free dischargeable flash cure water based ink composition kit for textile printing that gives desirable opacity and brightness of color to the fabric.
Yet another object of the present disclosure is to provide a formaldehyde free dischargeable flash cure water based ink composition kit that improves the feel of the print.
Other objects and advantages of the present disclosure will be more apparent from the following description which is not intended to limit the scope of the present disclosure.
SUMMARY
The present disclosure relates to a formaldehyde free dischargeable flash cure water based ink composition kit, said composition comprising: a) a first pack consisting a blend of a polyurethane resin, water, a wetting agent, a softener, a plasticizer, a surfactant, an emulsifier, a filler, a coloring agent, a pH stabilizer and a thickener; and b) a second pack consisting a discharge agent; wherein the contents of said first pack and said second pack are mixed just prior to the application.
In accordance with another embodiment of the present disclosure, the formaldehyde free dischargeable flash cure ink composition provides desirable opacity and brightness of color on the fabric.
DETAILED DESCRIPTION
Water based ink compositions are low cost, odorless and environment friendly, due to lower emission of the volatile organic compounds. A substitute for the formaldehyde based discharge agents is desirable for the water based ink composition. It is also desirable to minimize the number of strokes of water based ink composition for textile printing, especially for automatic machines.
The present disclosure relates to a formaldehyde free dischargeable flash cure water based ink composition kit. The ink composition of the present disclosure is environment friendly and provides desirable opacity and brightness of color to the fabric.
In accordance with one aspect of the present disclosure, there is provided a formaldehyde free dischargeable flash cure water based ink composition kit, the kit comprises: a) a first pack consisting of a blend of a polyurethane resin, water, a wetting agent, a softener, a plasticizer, a surfactant, an emulsifier, a filler, a coloring agent, a pH stabilizer, a and a thickener; and b) a second pack consisting of a discharge agent.
The contents of the first pack and the second pack are mixed just prior to the application. The formaldehyde free dischargeable flash cure ink composition has a shelf life of 8 to 12 hrs, when stored at a temperature below 25 °C.
The ratio of the amount of the first pack and the amount of the second pack is in the range of 100: 10 to 100: 15.
In accordance with the present disclosure, the formaldehyde free dischargeable flash cure ink composition is suitable for water based as well as plastisol based compositions when used in automatic machine printing.
In accordance with the embodiments of the present disclosure, the amount of polyurethane resin is in the range of 15% to 30% of the first pack, preferably 22%. The density of polyurethane resin of the present disclosure is in the range of 0.5 gm/cm3 to 2.0 gm/cm3 and comprises solids in the range of 30% to 50%. In accordance with one embodiment of the present discsloure, the density of polyurethane resin is 1.05 gm/cm3 and comprises 40% of solids.
The polyurethane resin of the present disclosure is ALBERDING® U 400 N, which is an aliphatic polyether-polyurethane.
In accordance with the embodiments of the present disclosure, the amount of water in formaldehyde free dischargeable flash cure ink composition is in the range of 10% to 20% of the first pack, preferably 16.5%.
In accordance with embodiments of the present disclosure, the wetting agent is at least one selected from the group consisting of white spirit, TEGO® Wet 500 and TEGO® Glide 410, preferably white spirit, in an amount in the range of 10% to 30% of the first pack, preferably 22%. The white spirit has more than 90% transparency and specific gravity ranging from 0.8 to 0.85.
The amount of the softener is in the range of 5% to 15% of the first pack, preferably 8%. In accordance with one embodiment of the present disclosure, the softener is urea. The urea acts as a humectant as it reduces clogging of the screen due to ink drying.
In accordance with embodiments of the present disclosure, the plasticizer is at least one selected from the group consisting of monopropylene glycol, dipropylene glycol, tripropylene glycol and 1, 2-cyclohexane dicarboxylic acid diisononyl ester. In accordance with one embodiment of the present disclosure, the plasticizer is monopropylene glycol, in an amount in the range of 1% to 15% of the first pack, preferably 12 %. The plasticizer of the present disclosure acts as a humectant due to their high water compatibility and gives a smooth flow to the composition when used in the printing.
In accordance with the embodiments of the present disclosure, the surfactant is at least one selected from the group consisting of surfynol® 440, surfynol® 420, surfynol® 104 and surfynol® SE-E (surfynol® 440, surfynol® 420, surfynol® 104 and surfynol® SE-E are the surfactants of the acetylenic diol family). In accordance with one embodiment of the present disclosure, the surfactant is Surfynol® 440 in an amount in the range of 0.2 % to 2.0 % of the first pack, preferably 0.5 %. Surfynol® 440 acts as excellent pigment wetting agent, which improves the flow and leveling of the composition and is free of volatile organic compounds.
In accordance with embodiments of the present disclosure, the emulsifier is at least one selected from the group consisting of Rhodacal A4D and Synperonic™ 13/7-85-LQ-(RB) (polyoxyethylene tridecyl ether), preferably Synperonic™ 13/7-85-LQ-(RB), in an amount in the range of 0.2% to 2.0% of the first pack, preferably 0.5%.
In accordance with the embodiments of the present disclosure, the filler is at least one selected from the group consisting of calcium carbonate and aluminium silicate, preferably aluminium silicate, in an amount in the range of 5% to 20% of the first pack, preferably 10 %.
In accordance with the present disclosure, the coloring agent is titanium dioxide of anatase or rutile grade, preferably rutile grade in an amount in the range of 3% to 15% of the first pack. In accordance with one embodiment of the present disclosure, the amount of titanium dioxide is 5 % of the first pack.
In accordance with the embodiments of the present disclosure, the pH stabilizer is at least one selected from the group consisting of triethanol amine, 10% liquor ammonia and 2-amino-2-methyl-1-propanol solution, preferably 2-amino-2-methyl-1-propanol solution, in an amount in the range of 0.1% to 1.5% of the first pack, preferably 1.0%. The pH of the first pack is neutral or slightly alkaline, in the range of 7 to 8.
In accordance with the embodiments of the present disclosure, the thickener is at least one selected from the group consisting of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose and hydroxypropyl methyl cellulose (HPMC), preferably hydroxypropyl methyl cellulose, in an amount in the range of 0.2 % to 1.5 % of the first pack, preferably 0.5 %. The hydroxypropyl methyl cellulose provides better thickening and anti-settling properties to the ink composition.
In accordance with another aspect of the present disclosure there is provided a process for the preparation of the first pack; the process comprises charging a reactor with a polyurethane resin and water, and stirring thoroughly to obtain a first mixture. A wetting agent and a softener are introduced in the first mixture under continuous stirring till the beads of softener are dispersed to obtain a second mixture. A plasticizer, a surfactant and an emulsifier are added to the second mixture under continuous stirring to obtain a homogeneous solution. A filler and a colouring agent are further added to the homogeneous solution under stirring to obtain a third mixture. A pH stabilizer is added to the third mixture under continuous stirring followed by the addition of a thickener till all the beads are dissolved and the desired viscosity is attained to obtain a first pack.
The first pack and the second pack consisting of the discharge agent, are mixed just prior to the application. The two packs can be mixed in a vessel using a spatula. The first pack and the second pack can be stored in plastic bottles.
In accordance with one embodiment of the present disclosure, the discharge agent is Sera Con P ACT.
The discharge agent, Sera Con P ACT is represented by formula 1 below:

Formula I
where:
G represents a group 1 metal; and n is 1-6.
The group 1 metal of the present disclosure can be at least one of sodium and potassium.
In accordance with one embodiment of the present disclosure, the first pack and the second pack are mixed in the ratio of 100:15 to obtain the formaldehyde free dischargeable flash cure water based ink composition.
The ink composition of the present disclosure can be applied to a dyed fabric; the dyed fabric being 100% cotton, 100% synthetic, 100% natural, semi-synthetic or a blended fabric. In accordance with one embodiment of the present disclosure, the dyed fabric is 100% cotton based fabric.
The formaldehyde free dischargeable flash cure water based ink composition of the present disclosure can be used for printing fabrics by screen printing by means of manual/table/automatic machine printing. The formaldehyde free dischargeable flash cure water based ink composition of the present disclosure can be applied using maximum of two strokes on the fabric material to give brighter print with a soft feel and shows better opacity on fabric.
In accordance with the embodiments of the present disclosure, the viscosity of the ink composition of the present disclosure is in the range of 20 poise to 100 poise, preferably 40 poise.
In accordance with one embodiment of the present disclosure, there is an improvement in ‘L’ values of the fabric using a formaldehyde free dischargeable flash cure water based ink composition.
The present disclosure is further illustrated herein below with the help of the following experiments. The experiments used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the experiments should not be construed as limiting the scope of the embodiments herein.
Experiment 1: Process for preparing a first pack
A rotamix disperser mixer was charged with 22 g of Alberding U400 N (polyurethane resin) and 16.5 g of water and was stirred thoroughly to obtain a first mixture; 22 g of white spirit and 10 g of urea were introduced in the first mixture under continuous stirring till the beads of urea were dispersed to obtain a second mixture; 12 g of monopropylene glycol, 0.5 g of Surfynol® 440 and 0.5 g of Synperonic 13/7-85-LQ-(RB)were added to the second mixture under continuous stirring to obtain a homogeneous solution; 10 g of aluminium silicate and 5 g of titanium dioxide were further added to the homogeneous solution under stirring to obtain a third mixture. Grinding was continued till the particle size is below 5 micron. 1.0 g of 2-amino-2-methyl-1-propanol solution was then added to the mixture under continuous stirring followed by the addition of 0.5 g of hydroxypropyl methyl cellulose till all the beads dissolved and the viscosity of 40 poise was attained to obtain a first pack. The composition of the first pack is summarized in Table 1 below.

Table 1: Composition of the first pack
Sr No. Components Amount with respect to the first pack (g)
1 Alberding U400 N 22
2 Water 16.5
3 White spirit 22
4 Urea 10
5 Monopropylene glycol 12
6 Surfynol® 440 0.5
7 Synperonic 13/7-85-LQ-(RB) 0.5
8 Aluminium Silicate 10
9 Titanium dioxide rutile grade 5
10 2-amino-2-methyl-1-propanol solution 1.0
11 Hydroxypropyl methyl cellulose (HPMC) 0.5
100 g of the first pack was mixed with 15 g of Sera Con P-ACT (the second pack) just prior to the printing to obtain a homogeneous solution. The homogeneous solution was stored below 25 °C. The advantages of formaldehyde free dischargeable flash cure water based ink composition is that it gives good intercoat adhesion to the plastisol based ink system and a light feel due to minimum depth of the base.
Plastisol ink, free from polyvinyl chloride and phthalate (YC color) was used during the printing of inks on fabrics, the process for which is described below.
Experiment 2: Process for printing formaldehyde free dischargeable flash cure ink composition on fabric
The formaldehyde free dischargeable flash cure ink composition of experiment 1 was printed on a 100% black cotton single jersey using a monofilament polyester mesh (43T mesh). Two strokes of formaldehyde free dischargeable flash cure ink composition were applied on the fabric. The print was flash cured at a temperature of 100 °C for 4 seconds. After the print was touch dry, a second layer of YC color using a monofilament polyester mesh (43T mesh) was applied on the fabric already printed with the formaldehyde free dischargeable flash cure ink composition. Two strokes of YC color were applied using a monofilament polyester mesh (43T mesh) and then flash cured at a temperature of 95°C for 4 seconds. Finally the print was cured at 160 °C for 90 seconds. The YC colors used in the tests 1 to 8 are listed below-
1. YC-757: Flash cure white
2. YC-042: Seritone Yellow (Green shade)/Light chrome
3. YC-134: Seritone Red (Yellow shade)/Red
4. YC-165: Seritone Magenta
5. YC-203: Seritone Blue/Mid blue
Evaluations of the results by printing of the formaldehyde free dischargeable flash cure ink composition on fabric
100% cotton fabric was first printed with the formaldehyde free dischargeable flash cure ink composition and then a color layer was printed on the fabric. A comparative test was performed, where, 100% cotton was first printed with an YC-757 white layer and then a color layer was printed on the white layer. The ‘L’, ‘a’ and ‘b’ values of the color printed on white layer (YC-757) were used for comparison, since; it does not have a dye that will migrate to the top color, turning the color towards a darker shade. The ‘L’, ‘a’, ‘b’ values of the ink composition of the formaldehyde free dischargeable flash cure ink composition are listed in the tables 2 and 3.
Tables 2 and 3 illustrate the ‘L’, ‘a’ and ‘b’ values of different color (YC-042, YC-134, YC-165, and YC-203) printed on 100 % black cotton. The test details are given below:
Test 1 (comparative test): 100 % black cotton printed with two strokes of layer 1 (YC-757) and two strokes of layer 2 (YC-042).
Test 2 (in accordance with the present disclosure): 100 % black cotton printed with two strokes of layer 1 (formaldehyde free dischargeable flash cure ink composition) and two strokes of layer 2 (YC-042).
Test 3 (comparative test): 100 % black cotton printed with two strokes of layer 1 (YC-757) and two strokes of layer 2 (YC-134).
Test 4 (in accordance with the present disclosure): 100 % black cotton printed with two strokes of layer 1 (formaldehyde free dischargeable flash cure ink composition) and two strokes of layer 2 (YC-134).
Test 5 (comparative test): 100 % black cotton printed with two strokes of layer 1 (YC-757) and two strokes of layer 2 (YC-165).
Test 6 (in accordance with the present disclosure): 100 % black cotton printed with two strokes of layer 1 (formaldehyde free dischargeable flash cure ink composition) and two strokes of layer 2 (YC-165).
Test 7 (comparative test): 100 % black cotton printed with two strokes of layer 1 (YC-757) and two strokes of layer 2 (YC-203).
Test 8 (in accordance with the present disclosure): 100 % black cotton printed with two strokes of layer 1 (formaldehyde free dischargeable flash cure ink composition) and two strokes of layer 2 (YC-203).

Table 2: Illustration of the ‘L’, ‘a’ and ‘b’ values of different colors

‘L’ ‘a’ ‘b’ ‘C’ ‘H’ Values Garment 100%
Black cotton
Test 1 Test 2 Difference as compared to test 1 Test 3 Test 4 Difference as compared to test 3
Layer 1:
YC-757 (White taken as Standard) Layer 1: Formaldehyde free dischargeable flash cure ink composition Layer 1:
YC-757
(White taken as Standard) Layer 1: Formaldehyde free dischargeable flash cure ink composition
Layer 2:
YC-042 Layer 2:
YC-042 Layer 2:
YC-134 Layer 2:
YC-134
L 80.77 91.13 10.36 35.57 42.06 6.49
A -13.1 -11.49 1.61 35.93 46.49 10.56
B 60.55 70.62 10.07 22.59 29.15 6.56
C 61.95 71.55 9.6 42.44 54.87 12.43
H 102.21 99.24 2.97 32.15 32.09 -0.06
Tests 1 and 2 of table 2 reveals that the 'L' value of test 2 has increased by 10.36 units indicating the improvement in brightness; the 'b' value of test 2 has increased by 10.07 units indicating it was more towards yellow side and the 'a' value of test 2 was increased by 1.61 units indicating that it was more towards the green side. The formaldehyde free dischargeable flash cure ink composition as a base bleaches the black cotton and forms a thin white layer, due to which YC-042 appears more bright and yellowish than test 1.
Tests 3 and 4 of table 2 reveals that the 'L' value of test 4 has increased by 6.49 units indicating the improvement in brightness; the 'b' value of test 4 has increased by 6.56 units indicating it was more towards the yellow side and the 'a' value of test 4 has increased by 10.56 units which shows it was more towards the red side. The formaldehyde free dischargeable flash cure ink composition as a base bleaches the black cotton and forms a thin white layer, due to which YC-134 which is red in color with yellow shade appears brighter and reddish-yellow shade than test 3.

Table 3: Illustration of the ‘L’, ‘a’ and ‘b’ values of different colors

‘L’ ‘a’ ‘b’ ‘C’ ‘H’ Values Garment 100%
Black cotton
Test 5 Test 6 Difference as compared to test 5 Test 7 Test 8 Difference as compared to test 7
Layer 1:
YC-757 (White taken as Standard) Layer 1: Formaldehyde free dischargeable flash cure ink composition Layer 1:
YC-757
(White taken as Standard) Layer 1: Formaldehyde free dischargeable flash cure ink composition
Layer 2:
YC-165 Layer 2:
YC-165 Layer 2:
YC-203 Layer 2:
YC-203
L 36.13 42.34 6.21 39 43.82 4.82
A 39.78 50.94 11.16 -2.52 -2.32 0.2
B -13.36 -10.59 2.77 -40.09 -47.82 -7.73
C 41.96 52.03 10.07 40.17 41.04 0.87
H 341.44 348.25 6.81 266.41 266.76 0.35
Tests 5 and 6 of table 3 reveals that the 'L' value of test 6 has increased by 6.21 units indicating the improvement in brightness; the 'b' value of test 6 is increased by 2.77 units indicating that it was more towards the blue side and the 'a' value of test 6 has increased by 11.16 units, which shows it was more towards the red side. The formaldehyde free dischargeable flash cure ink composition as a base bleaches the black cotton and forms a thin white layer, due to which YC-165 which is magenta in color appears brighter and pinkish shade than test 5.
Tests 7 and 8 of table 3 reveals that the 'L' value of test 8 has increased by 4.82 units indicating the improvement in brightness; the 'b' value of test 8 has decreased by 7.73 units indicating that it was more towards the blue side. There was no significant change in the ‘a’ values. The formaldehyde free dischargeable flash cure ink composition as a base bleaches the black cotton and forms a thin white layer, due to which YC-203 which is blue in color appears brighter and blue than test 7.
Thus, it is clear from tests 1 to 8 that the ink composition of formaldehyde free dischargeable flash cure ink composition used in the tests 2, 4, 6 and 8 provides improved brightness as compared to the ink composition of tests 1, 3, 5 and 7. The ink composition of formaldehyde free dischargeable flash cure ink composition can be applied using maximum of two strokes and gives better opacity on the fabric and a smooth feeling of the printed material.
TECHNICAL ADVANCES AND ECONOMICAL SIGNIFICANCE
The present disclosure described herein above has several technical advantages including, but not limited to, the realization of:
• a formaldehyde free dischargeable flash cure water based ink composition kit that is essentially formaldehyde free with better productivity;
• a dischargeable flash cure ink composition that gives the desirable opacity as well as the brightness of the color on the fabric;
• a dischargeable flash cure cink composition, which gives the desirable /feel of the PVC/Phthalate free plastisol print; and
• an environment friendly a formaldehyde free dischargeable flash cure ink composition kit for textile printing.
The exemplary embodiments herein quantify the benefits arising out of this disclosure and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments in the description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
Any discussion of documents, acts, materials, devices, articles and the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters form a part of the prior art base or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application.
While considerable emphasis has been placed herein on the particular features of this disclosure, it will be appreciated that various modifications can be made, and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other modifications in the nature of the disclosure or the preferred embodiments will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.