JPH0512466B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to a coating fabric having a dry and silk-like touch. (Prior Art) Conventionally, coating processing has been widely carried out on fabrics in order to impart functions such as waterproofness, water repellency, and windproofness, as well as to impart surface changes such as color, gloss, and texture. Synthetic polymers such as , polyacrylic ester, polyurethane, and silicone resin are used. These resins are used because, among coating fabrics, those used for clothing tend to have a soft feel, and soft synthetic polymers with a low glass transition temperature are required. . However, many soft synthetic polymers with low glass transition temperatures are extremely sticky, and therefore have the disadvantage that the surface of the coating fabric becomes sticky and wet-touch. Therefore, various methods have been tried in the past in order to obtain dry-touch coated fabrics. One is surface treatment on the coating surface. This is to form a thin film of a smoothing agent such as a silicon compound or a fluorine compound, or a less sticky resin with a high glass transition temperature on the surface of the coating film. Another method is to add fillers to the coating resin liquid.
As fillers, silica, titanium oxide, pulp powder, etc. are usually used. (For example, JP-A-61
The present inventors have also proposed a method of using metal soap as a filler (Japanese Patent Application Laid-Open No. 62-289058). (Problems to be Solved by the Invention) However, in many cases, smoothing agents cannot sufficiently prevent stickiness, and silicon compounds cause a unique sliminess. On the other hand, resins with a high glass transition temperature are sufficient to prevent stickiness, but tend to harden the texture. On the other hand, in the method of adding fillers, in order to sufficiently prevent stickiness, it is necessary to add a large amount of fillers, which tends to harden the texture. Furthermore, physical properties such as waterproofness, durability, and moisture permeability are likely to deteriorate. For this reason, conventionally, it has not been possible to prevent the coated surface from becoming sticky and to obtain a dry-touch coated fabric without impairing the feel, physical properties, etc. The present invention solves these drawbacks by preventing the coated surface from becoming sticky, without hardening the texture, especially without making it paper-like.
The purpose of the present invention is to provide a coated fabric having a silk-like dry touch. (Means for Solving the Problems) The present invention provides a coating fabric having a flexible resin film A made of a synthetic polymer having a glass transition point temperature of 0° C. or lower on at least one side of a fiber structure. This is a dry-touch coated fabric characterized by having a resin film B having a thickness of 1 μm or more and containing 5% by weight or more of an acrylic acid polymer of fibroin. The fiber structure referred to in the present invention includes woven fabrics, knitted fabrics, non-woven fabrics, etc., and its constituent fibers include:
Natural fabrics such as cotton, linen, wool, and silk, synthetic fibers such as nylon, polyester, and acrylic, and mixtures thereof may be used. The resin film A referred to in the present invention is formed from a synthetic polymer, and such synthetic polymers include:
A flexible material having a glass transition point temperature of 0° C. or lower, such as polyacrylic acid ester resin, polyurethane resin, silicone resin, polychlorosulfonated polyethylene resin, etc., may be used in combination. The resin film A is formed on at least one side of the fibrous structure by a dry method, a wet lamination method, etc., and there are two types: a porous film having micropores on the film surface and a non-porous film. . The thickness of such a film should be 5 μm or more from the viewpoint of durability, but
In the case of a porous material having moisture permeability, the thickness is preferably 5 to 150 μm in order to obtain sufficient moisture permeability. In addition, in the case of a non-porous material having moisture permeability, the thickness is preferably 5 to 30 μm in order to obtain sufficient moisture permeability. The surface of such film A is coated with resin film B containing 5% by weight or more of acrylic acid polymer of fibroin.
is formed. Such an acrylic acid polymer of fibroin is composed of 5 to 50% by weight of fibroin obtained by a known method and 50 to 95% by weight of acrylic acids such as (meth)acrylic acid, sodium (meth)acrylate, (meth)acrylate, etc. ) Potassium acrylate, (meth)
It consists of ammonium acrylate, etc., and if necessary, 5% by weight or less of a crosslinkable monomer, such as ethylene glycol methacrylate, polyethylene glycol diacrylate, glycidyl (meth)acrylate, N,N-methylenebisacrylamide, etc. It is made by graft polymerizing acrylic acid monomer to fibroin. Resin film B consists of 5 acrylic acid polymers of the fibroin.
Synthetic polymers containing at least % by weight include polyacrylic acid ester resins, polyurethane resins, silicone resins, and the like. Further, in order to improve the adhesion with the resin film A, it is preferable to use a crosslinking agent such as a melamine compound or an isocyanate compound in the resin film B.
When is a polyurethane resin, it is particularly effective to use an isocyanate compound in combination.
Furthermore, the resin film B may contain titanium oxide, color pigments, and the like. The method for forming the resin film B is not particularly limited, but coating can be performed using a knife coater, gravure coater, screen coater, etc. in a state where the resin film B is dispersed in an appropriate solvent. When polyacrylic acid containing mostly sodium salt or ammonium salt is used as a polymer, water can be used as a solvent. If the film thickness of film B is 1 μm or more, a silk-like dry touch can be obtained, but if film A is a film with moisture permeability, the film thickness should be 1 μm or more in order to obtain sufficient moisture permeability. It is desirable that the thickness is ~15 μm, and if the film thickness exceeds 15 μm, the moisture permeability will decrease significantly. Furthermore, it is possible to obtain more sufficient moisture permeability by making the film B into a microporous film through appropriate treatment, or by forming dots on the surface of the film A. In the present invention, it is possible to perform pre-treatment such as water repellent treatment on the fiber structure before and after forming the film A, but in order to ensure the adhesion of the film B, it is necessary to
Pretreatment after formation is preferably avoided. Further, after forming the film B, it is possible to perform a water repellent treatment, but it is necessary to perform a water repellent treatment to the extent that the silk-like touch is not adversely affected. Example 1 A fabric made of refined nylon 6 taffeta with a warp of 70 denier and 18 filaments, a weft of 70 denier and 18 filaments, and a warp density of 112 threads/inch and a weft density of 90 threads/inch was dyed using a jet dyeing machine and dried. Water repellency treatment was performed by padding with a 2% aqueous solution of a fluorine-based water repellent. Next, a polyurethane resin solution with the following formulation is applied using a roll doctor coater, immediately wet-coagulated in water at about 30℃, washed with hot water at about 40℃, and dried at a temperature of about 120℃ to form a coating. Made textiles. Polyester polyurethane resin 30% 100 parts DMF solution (Chrisbon 8006HV manufactured by Dainippon Ink Co., Ltd.) Blocking isocyanate solution 3 parts (Chrisbon BL-50 manufactured by Dainippon Ink Co., Ltd.) N,N-dimethylformamide 40 parts The above coated fabrics are coated. It was a microporous film with a layer thickness of about 25 μm. Next, an aqueous resin solution with the following formulation was applied to the coating surface of the coated fabric using a 60-mesh screen, immediately dried at a temperature of about 120°C, and then heat treated at a temperature of about 160°C. I went. In the following formulation, the acrylic acid polymer of fibroin is obtained by grafting sodium polyacrylate to fibroin at a ratio of 5:95, and the degree of neutralization of polyacrylic acid is approximately 65 mol%. Fibroin acrylic acid polymer 2% Blocked isocyanate 0.5% (Daiichi Kogyo Seiyaku Co., Ltd., Elastron M-2120) Crosslinking catalyst 0.3% (Daiichi Kogyo Seiyaku Co., Ltd. Catalyst 32) Ammonium carbonate 0.2% Coated fabrics with a thickness of 25 μm or more A microporous film of about 4 μm was formed on the surface of the polyurethane microporous film, and the coated surface had a silk-like dry feel, and the texture had not hardened. In addition, as shown in Table 1, the physical properties of this coated fabric show almost no decrease in water pressure resistance and moisture permeability, and the coating has a silk-like dry touch without deteriorating its physical properties or texture. A fabric was obtained. Comparative Example 1 In the same manner as in Example 1, nylon 6 taffeta was coated with wet polyurethane, recycled, and washed in hot water.The coated fabric was then padded with a 2% aqueous solution of silicone water repellent and heated to a temperature of approximately 120°C. After drying, heat treatment was performed at about 160°C. The coating fabric described above is a microporous film with a coating layer thickness of 25 μm, and the physical properties are
It was as shown in the table. The coated surface of this coating fabric had stickiness characteristic of polyurethane resins, and could not be said to have a desirable feel. Comparative Example 2 In Comparative Example 1, a polyurethane resin solution with the following formulation was processed in the same manner as in Comparative Example 1 to obtain a coated fabric consisting of a single layer. (The acrylic acid polymer of fibroin used was the same as that used in Example 1.) 30% polyester polyurethane resin 100 parts DMF solution (Krisbon 8006HV manufactured by Dainippon Ink Co., Ltd.) Blocked isocyanate solution 3 parts (Krisbon BL-50 manufactured by Dainippon Ink Co., Ltd.) Acrylic acid polymer of fibroin 4 parts N,N-dimethylformamide 45 parts The obtained coated fabric is a microporous film with a coating layer thickness of 28 μm, and the physical properties were as shown in Table 1. The coated surface of this coating fabric remained sticky, which is characteristic of polyurethane resin, and had a hard, paper-like texture. In addition, in terms of physical properties, water pressure resistance and moisture permeability were lower than those of Comparative Example 1.

[Table] (Effects of the Invention) According to the present invention, it is possible to obtain a dry touch that prevents the stickiness of the coated surface, which conventional coated fabrics have, and does not impair the original function and feel of the coated fabric. In addition, it provides a silk-touch and luxurious feel, and its usefulness is obvious.

Claims (1)

[Claims] 1. A coating fabric having a flexible resin film A made of a synthetic polymer with a glass transition point temperature of 0° C. or less on at least one side of a fibrous structure, in which 5% by weight or more of an acrylic acid polymer of fibroin is added to the surface of the resin film A. A dry-touch coating fabric characterized by having a resin film B having a thickness of 1 μm or more.