JPS6047394B2 - Method for printing fabrics made from animal hair fibers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for printing a fabric made of animal hair fibers, and its purpose is to prevent the occurrence of yarn curling or inversion of colored patterns during wear of the printed fabric.

Usually, when printing animal blankets, a high viscosity printing paste is used to obtain sharp designs.

For this reason, only the front side of the fabric is dyed, and the back side of the fabric remains undyed, and when the yarn collar or front-side reversal phenomenon that is characteristic of animal blankets occurs, as seen in wool print knitted fabrics, the white part is dyed on the front side. , the colored part is reversed to the back side.
This phenomenon is particularly noticeable in the armpits and belt areas of thin fabrics such as sports shirts, which involve strenuous exercise when worn, and also occurs when the shirt is washed. These reversal phenomena are caused by the rotation and twisting of the threads due to external stress, and the fact that animal hair fibers have a unique scale on their surface, which causes poor restorability due to friction. Furthermore, when printing with a printing paste of low viscosity, the color pattern becomes blurred, making it impossible to obtain sharp lines, and the commercial value is greatly reduced. The present inventors have proposed a method for preventing such a color pattern reversal phenomenon by printing on animal hair fiber fabric that has been pre-treated with a synthetic polymer.
Or, he invented a method of treating fabric with a synthetic polymer after printing, and filed an application earlier (Patent Application No. 78305 of 1978).
issue).

The present inventor continued research to improve the process to a simple process without reducing the effect of the multi-step process in the method of the above invention, and arrived at the method of the present invention. That is, the present invention is a method of printing a fabric made of animal hair fibers, which is characterized in that the fabric made of animal hair fibers is printed with a printing paste containing a synthetic polymer that reacts with animal hair fibers. When using the method of the present invention, a high viscosity printing paste can be used in the same manner as in the past, and even in the case of printed products that have been given excellent sharp lines by dyeing only the surface area, the threads during wearing can be used. It is possible to prevent the front-back reversal phenomenon of the collar or color pattern, and it is possible to save dye and provide printed products with extremely high commercial value.

Furthermore, the resulting printed product has sharp edges and the hue does not change even though a resin is used in combination, making it possible to obtain a dyed product with a stable and vivid color. In addition, the anti-build properties and wrinkle recovery properties of dyed products under high humidity are also improved. J To explain the method of the present invention in more detail, the present invention performs printing and dye fixing treatment on a fabric made of animal hair fibers by a conventional method using a printing paste containing a synthetic polymer that reacts with animal hair fibers. At the same time as fixing the dye, the synthetic polymer is fixed onto the animal hair fiber. Fabrics made from animal hair fibers are knitted or woven by conventional methods, and are usually first washed with a solvent to remove dirt from the knitting process and residual waxes from the animal hair itself, and then to remove the adhesion of the synthetic polymer. Improve the uniformity and durability of the anti-reversal effect by improving the properties or reactivity. The solvent used is preferably a halogenated hydrocarbon solvent such as perchlorethylene or trichlorethylene. It is preferable to perform this solvent scouring with a spread cloth in order to reduce the kneading effect and prevent the occurrence of wrinkles as much as possible, but when performing it in a rolling device such as a tumbler, it should be performed with slow rotation and without using a bag, etc. is preferable. It is usually processed for several minutes to several tens of minutes. After that, if desired, after bleaching with thiourea dioxide etc. (underbleaching and fluorescent whitening),
Preferably, it is expanded and then subjected to steaming treatment. Steaming treatment is necessary to remove distortion caused in the previous process and set it in a stable state to obtain a printed product with sharp edges and stable printing, and usually takes a relatively long time, several minutes or more. It is preferable to do so. Animal hair fibers to which the present invention can be applied include wool, alpaca, camel, etc., and the present invention is particularly useful for wool fibers.

By pre-treating animal hair fibers in the form of fibers, slivers, etc. by conventional methods such as chlorination or oxidation treatment, superior effects can be exhibited with a small amount of synthetic polymer. The synthetic polymer used in the present invention includes glue, dye,
It is necessary that the dye has good compatibility with the auxiliary agent and does not interfere with the dye and reduce the dyeability.

The synthetic polymers used include amine groups of animal hair fibers,
Those that cause bonding reactions such as amide bonds, urea bonds, ester bonds, thioester bonds, etc. with thiol groups, carboxyl groups, etc., and those that cause substitution reactions with disulfide bonds of fibers, etc. Examples include polyurethane, polysulfide, polythiol, and polyolefin. , polyamide, etc. Among these polymers, water-soluble polyurethanes are particularly preferred. Examples of polyurethane include aliphatic polyisocyanates such as hexamethylene diisocyanate and tetramethylene isocyanate, aromatic polyisocyanates such as p-phenylene diisocyanate, diphenylmethane diisocyanate, tolylene diisocyanate, and cyclohexane diisocyanate, and ethylene glycol and butane. Diols such as polypylene glycol, polytetramethylene glycol, polyethylene glycol, polyether diols such as polylopylene glycol, polyester diols such as polyethylene sebacate, polyethylene adipate, dihydric higher fatty alcohols or higher Examples include polyurethane polymers with terminal isocyanate groups obtained by reacting diols such as adducts of fatty acids and alkylene oxides, polyethylene glycol, polyether polyester diols such as polyethylene sebacate block copolymers, etc. . Polyurethane resins obtained by further chain-extending these prepolymers with water, alcohol, amines, etc., and water-soluble polyurethane resins in which terminal isocyanate groups in the prepolymers are blocked with bisulfite, are compatible with printing pastes. It has excellent solubility and is a preferred synthetic polymer. Among these polymers,
In particular, in water-soluble polyurethane whose terminal isocyanate groups are blocked with bisulfite, the blocked terminal isocyanate groups are sexualized by steaming and react with the amino groups, thiol groups, carboxyl groups, etc. of animal hair fibers. This is a particularly preferred polymer. The amount of the polymer applied varies depending on the basis weight of the fabric, the presence or absence of pretreatment such as chlorination or oxidation treatment, etc., but is usually 0.2 to 10% based on the weight of the fiber.
0% by weight, preferably 0.5-5. Sleep amount%. For chlorinated pretreated fibers, the amount used may be small, and usually 0.3 to 1.5% by weight is sufficient. Further, as the printing paste, it is preferable to use a paste that does not or does not easily react with dyes and synthetic polymers.

Preferable sizing agents include alginic acid-based and emulsion pastes, but sizing agents that do not contain active hydrogen are particularly preferred, such as alginic acid propylene glycol ester or O/W emulsion pastes such as mineral turpentine. The present invention will be explained below with reference to Examples.

Note that parts and percentages in the examples are parts by weight and percentages by weight. Example 1 0q of acidic sodium sulfite was dissolved in 600ml of water, and 1200mt of methyl alcohol was added.

This solution was added to 1000 g of Syntapreft LKF (manufactured by Bayer AG, polyisocyanate resin) and stirred strongly for about 2 hours to obtain Synthetic Polymer 1. Worsted yarn for knitting fabrics (
A jersey fabric knitted with a fabric weight of 200y1d using 2/60'' was solvent washed with perchlorethylene at room temperature for 5 minutes, and further exposed with thiourea dioxide.

After drying, the fabric was opened and subjected to steaming for 2.5 minutes using Branetto 3 (an open type steaming machine manufactured by Kettling Brown). Next, using the printing paste of the printing paste recipe 1
After printing with a coating weight of 00y1, steaming for 3 minutes at normal pressure to fix the dye and synthetic polymer, washing with water, and soaping! Gu,
Washed with water and dried. In addition, as a comparative example, a worsted yarn for knitted fabric that had been subjected to the same pretreatment was subjected to the same treatment using a printing paste that did not contain synthetic polymer 1. Printing paste prescription 1. Supranor Fastret BRl part 1 (acid dye manufactured by Bayer AG) Urea 1 part Synthetic polymer 15 parts Ammonium tartrate 1 part Mineral turpentine O/W emulsion (4) parts, warm water
41 parts Glyethin A1 1 part (B
(ASF dye dissolving agent) Next, 50 to 80% moisture was added to the synthetic polymer-treated knitted fabric obtained by the method of the present invention and the knitted fabric of the comparative example, based on the weight of each knitted fabric. The sample was placed in a rubbing resistance tester (manufactured by Toyo Seiki Seisakusho) and treated with a pressure of 0.5 bond 50 times, and the degree of color reversal was determined with the naked eye.

As described above, the printed knitted fabric obtained by the method of the present invention shows no color pattern reversal phenomenon even when subjected to a vigorous rubbing test, and has extremely high commercial value. Example 2 A base bleached knitted fabric for printing similar to that in Example 1 was printed using the printing paste 2 obtained by the printing paste formulation 2 to obtain a print with a printing amount of 150 dunes.

Thereafter, it was steamed at normal pressure for 3 minutes to fix the dye and the synthetic polymer at the same time, followed by ammonia soaping, water washing, and drying. Printing paste prescription 2. Lanazol Blue 3R 2 parts (Ciba Geigy reactive dye) 1 part urea 17 parts synthetic polymer Alginate propylene glycol ester (3%)
(b) Part hot water
As a result, the present invention treated with the synthetic polymer provided a practically acceptable anti-inversion effect.

Example 3 A synthetic polymer (1) was obtained by combining 1 (1) part of Thiokol LP-3 (polyol resin manufactured by Thiokol Chemical Co., Ltd.) and an additional part of Polamine E-10 (polyamide◆epichlorohydrin resin manufactured by Toho Chemical Co., Ltd.).

The same pre-bleached knitted fabric for printing as in Example 1 was printed with the printing paste of printing paste prescription 3 to obtain a print with a print weight of 150 gId. Next, it was steamed at normal pressure for 3 minutes to fix the dye and the synthetic polymer at the same time, followed by washing with water, soaping, washing with water, and drying in this order.
Printing paste prescription 3. Lanazol Red G3 part (manufactured by Ciba Geigy, reactive dye '114) urea
1 part synthetic polymer ■ w part n-octyl alcohol 2 parts warm water
34 parts Mineral turpentine O/W emulsion (a) Part As a result, when the present invention was used, the texture was soft and a practically acceptable degree of anti-inversion effect was obtained.

Example 4 A wool top was immersed in an aqueous solution of sulfuric acid 4CCIe,
After squeezing to a squeezing rate of 0%, washing with water, squeezing again to a squeezing rate of 50%, and then applying a PH6 anti-shrunk bath consisting of sodium dichloroisocyanurate 2091e1 Tergitol TMN (penetrating agent manufactured by Union Carbide Co., Ltd.) 5y1e. Using a suction drum type forced liquid flow device, the liquid was immersed for about 5 seconds, and the liquid was squeezed to a squeezing rate of 100J%, and then run in the air for about 1.5 minutes, washed with water, and further soaked in 109 NOE of acidic sodium sulfite. It was dechlorinated with a mixed aqueous solution of 10yI' of sodium sulfite, washed with hot water, washed with water, and dried.

The obtained preshrunk sliver was knitted into a jersey knitted fabric (basis weight 200yIrf1), and after solvent cleaning with perchlorethylene at room temperature for 5 minutes, Tekkurite (thiourea dioxide, manufactured by Tokai Denka Kogyo Co., Ltd.) 6%, Illuminal B
Four powders were treated at 85°C in a bleach bath containing 3% BS (fluorescent brightener manufactured by Showa Denka Kogyo Co., Ltd.), washed with water, dried, and opened.

Thereafter, it was expanded at 130°C using a pin tenter, and then 2. After the printing process, the printing paste of the printing paste recipe 1 is printed, and after fixation by steaming, soaping,
Dry. As a result, a printed product was obtained that was clear, had no sharp edges, and had improved color development by about 50%.

In addition, as a result of sewing it into a sports shirt and testing it repeatedly worn by athletes, there was no difficulty in reversing the color pattern, and the texture and
The elasticity was also extremely good. Example 5 A base bleached knitted fabric for printing obtained in the same manner as in Example 1 was printed using a printing paste with printing paste formulation 4, and after three powder steaming treatments under normal pressure, it was washed with water, and further treated with 1 cc of ammonia water. Rebapon 1
After soaping with an aqueous solution of 50 (softener manufactured by Bayer AG) 2y11 at 50° C. for 2 minutes, it was dried.

Printing paste prescription 4. Isolan Gray BRLS 3 parts (1:2 metallized dye manufactured by Bayer) Syntaplet WFl (water-soluble polyurethane manufactured by Bayer) Urea 2 parts Revapon 1501 3 parts Glyethin A (BASF dye solubilizer) Mineral Turben O/W emulsion (1) Part ammonium sulfate 1 part warm water 2
0m The obtained printed product showed no reversal of color and pattern, and had extremely excellent texture and elasticity.

Claims (1)

[Claims] 1. A method for printing a fabric made of animal hair fibers, which comprises printing the fabric made of animal hair fibers with a printing paste containing a synthetic polymer that reacts with animal hair fibers.