JP2000119966A - Functionality imparting processing for coated and processed material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coated and processed material with functionality such as silky touch, soft handle, UV cutting properties, etc., by using an aqueous solution of glycine, etc., and chitosan as a treating agent and impregnating a fiber substrate coated and processed with a synthetic resin with the aqueous solution. SOLUTION: An aqueous solution of at least two of glycine, sericin and chitosan is used as a treating agent. A fiber substrate such as a natural fiber, a synthetic fiber, etc., coated and processed with a synthetic resin such as a urethane resin, etc., is impregnated with the aqueous solution to provide a coated and processed material with functionality.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing method for imparting functionality to a coating material such as synthetic leather, and more particularly, to giving a coating material a silky touch, a soft feeling and a UV cut performance. It is about the method.

[0002] Conventionally, those relating to the modification processing of a coating material such as synthetic leather and the modification processing of a fiber base material are known. In recent years, coating materials based on natural fibers or synthetic fibers have been used, and for example, moisture absorption, moisture release, antibacterial properties, deodorant properties, and the like have been required.

[0003] In order to satisfy these requirements, methods such as modification of a coating base and modification of a coating paint, for example, addition of silk powder and a water-absorbing polymer have been adopted. In these methods, the steps and the composition are complicated, the yield is poor, and the cost is increased. In addition, in the case of synthetic fibers and natural fibers or their interweaving bases, it is necessary to use processing methods and compositions suitable for each.

[0004]

SUMMARY OF THE INVENTION The present invention provides silky touch, soft feel and UV cut performance on a coating material by post-processing, regardless of the paint composition of the base material or coating material of natural fiber or synthetic fiber. The purpose is to grant.

That is, the present invention provides hygroscopicity and moisture release with an aqueous glycine solution, silky touch with an aqueous sericin solution, adds an aqueous krill solution and the like, uses no resin as a fixing agent, and fixes the same to fibers using chitosan of the same natural protein. This is a method for imparting functionality to a coating material, which comprises impregnating the coating material with a treatment liquid that has been blended.

The aqueous glycine solution used in the present invention is obtained by dissolving and hydrolyzing sponge by a chemical refining method, and its main component is a natural protein consisting of glycine, arginine, aspartic acid, etc., which is three times as hygroscopic as sericin. It is said to have moisture release properties.

The aqueous sericin solution used is one obtained by eluting raw silk by hydrolysis using ionized water by a general chemical refining method or fermentation refining method using ionized water, and further increasing the purity by electrolysis. In addition, since silk proteins such as sericin and fibroin are generally attached to fibers and membranes using a fixing agent, they have a drawback that the feel tends to be hard.

[0008] As the fiber base material used in the present invention, a woven fabric, a knitted fabric, a towel cloth, a nonwoven fabric, or the like of a natural fiber, a synthetic fiber, or a blended product of a natural fiber and a synthetic fiber can be used. Urethane resin, fluorine resin, acrylic resin,
It includes a coating material obtained by finishing an olefin resin, a vinyl chloride resin, or the like by a processing method such as direct coating, calendering, transfer coating, depinning coating, or gravure coating. Further, a fluorine-based water repellent, an inorganic silver antibacterial agent, a deodorant, and the like that are compatible with the natural protein aqueous solution can be appropriately added. Functionality can be imparted, if necessary, in addition to silky touch, soft feel, UV-cutting property, moisture absorption / desorption, etc., if necessary. ,

[0009]

Example 1 A natural protein glycine aqueous solution (concentration 2%) 10 parts by weight, a natural protein sericin aqueous solution (concentration 2%) 100 parts by weight, and a chitosan aqueous solution (concentration 2%) 5 parts by weight were used as a crosslinking agent. Then, 5 parts by weight of a fluorine-based water repellent (concentration: 5%) was mixed to prepare a treatment liquid to which 400 parts by weight of water and 5 parts by weight of ethyl alcohol were added. A processed material obtained by coating a cotton fabric with urethane was immersed in the above-mentioned impregnating solution, squeezed with a mangle so as to have a squeezing ratio of 150%, and dried at 120 ° C. for 1 minute to obtain a functional material of the present invention. This functional material was tested by the following method.

Washing test: Use of a commercially available small electric washing machine, neutral detergent: 2 gr / l, bath ratio: 1: 100, temperature × time: 40 ° C. × 15 minutes, water washing: 5 minutes, drying: 80 ° C. × 20 minutes, Ironing cloth:
180 ° C x 2 minutes

Test Results Item Untreated product Treated product Treated product 10 times after washing Silky touch No Yes Yes Lightfastness (20 hr class) 3 4-5 4-5 Flexibility (cantilever method mm) 10 5 5 Hygroscopicity (%) 1.02 2.14 2.06 Moisture release (sec) 95 42 44

Example 2 A fibrous base material obtained by transferring a paint in which a fluorine resin and a polyurethane resin were blended with a polyester knit via a polyurethane adhesive to a polyester knit was impregnated with a natural protein aqueous solution having the following blending at a drawing ratio of 100%. Then, it was dried at 110 ° C. for 30 seconds to obtain a functional synthetic leather having silky touch. The test results were as follows.

[0013]

Test Results Item Untreated product Treated product Treated product 10 times after washing Silky touch No Yes Yes Lightfastness (20 hr class) 3-4 4-5 4-5 Flexibility (cantilever method mm) 10 4 5 Hygroscopicity ( %) 1.0 2.4 2.4 Moisture release (seconds) 95 42 44

Example 3 A processing material obtained by laminating a polyester woven fabric and a nylon woven fabric with a hot melt adhesive was processed with an impregnating agent having the following composition at a drawing ratio of 100%, and dried at 120 ° C. for 50 seconds to function. A workable material was obtained.

Formulation Sericin aqueous solution (concentration 2%) 100 parts by weight Chitosan aqueous solution (concentration 2%) 5 parts by weight Fluorine softener 5 parts by weight Ionized ceramic aqueous solution 1 part by weight Ethyl alcohol 5 parts by weight Water 400 parts by weight

Test Results Item Untreated product Treated product Treated product 10 times after washing Silky touch No Yes Yes Lightfastness (20 hr class) 3-4 4-5 4-5 Flexibility (cantilever method mm) 25 15 12 Far infrared radiation (35 ℃) No Yes Yes

Claims (1)

[Claims] 1. A process for imparting functionality to a coating material, wherein an aqueous solution comprising at least two of glycine, sericin and chitosan is used as a treating agent and a fiber substrate coated with a synthetic resin is impregnated. Method.