JPH08108U - Laminated fabric with excellent stain resistance and flex resistance - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Fluorine resin with irregularities formed on the surface,
A laminated fabric having a three-layer composite coating layer made of an acrylic resin and a vinyl chloride resin on at least one surface and having excellent antifouling property and bending resistance. [Structure] The outermost layer has a composite coating layer consisting of three layers of a fluororesin, an intermediate layer of an acrylic resin, and a base material layer of vinyl chloride resin on at least one side of the base cloth, and the surface is uneven. It is a laminated fabric in which is formed. [Effect] Since the fluorine resin having excellent antifouling property is firmly laminated on the vinyl chloride resin of the base material through the acrylic resin having excellent adhesiveness, the unevenness is formed on the surface,
It is resistant to cracking and film peeling due to bending, and maintains stable antifouling properties for a long period of time.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is applied to an antifouling laminated cloth having a composite coating layer composed of three layers of fluorine resin, acrylic resin and vinyl chloride resin on at least one surface of the base cloth, and forms unevenness on the surface. Thus, a laminated fabric having particularly excellent antifouling property and bending resistance is provided.

[0002]

[Prior art]

 Conventionally, in general, waterproof cloths such as tents and truck seats have been most often used in which various vinyl materials such as synthetic fiber, glass fiber, cotton and hemp are coated with soft vinyl chloride resin on the surface. However, while this vinyl chloride resin is easy to handle such as processability, it has poor weather resistance, and its formulation contains a large amount of plasticizers that impart flexibility and cold resistance, as well as stabilizers and additives. In the case of long-term outdoor use, these migrate to the surface, and in addition to the migrated plasticizer, stabilizers, additives, etc. After transfer, contaminants such as soot and dust in the atmosphere adhered to the transferred plasticizer, etc., and the aesthetics of tents and sheets were significantly deteriorated. There is a serious drawback, and the degree of pollution is increasing year by year due to air pollution and dust as well as fading due to weathering deterioration, and improving the antifouling property of tents and sheets has become an issue in the industry.

[0003]

[Problems to be solved by the device]

 For this reason, a method of protecting the surface by applying a surface treatment agent in which vinyl chloride-vinyl acetate copolymer resin, acrylic resin, etc. are dissolved in a solvent for the purpose of blocking plasticity that has exuded from vinyl chloride compounds. Also, as in Japanese Utility Model Application Laid-Open No. 50-101684, a base cloth to which an acrylic resin or a film or sheet is fixed and laminated, or a sheet coated with vinyl chloride as described in JP-A No. 50-167445 is made of a polymethacrylic acid. A method of laminating a resin film has been proposed. However, the method of surface treatment for blocking the exudation of the plasticizer and the like in the vinyl chloride compound also has a drawback that the effect cannot be expected unless it is applied frequently and continuously. In addition, the laminated field in which the acrylic resin is fixed to the base cloth and the one in which the surface of the base cloth coated with PVC is laminated with the polymethallyacrylic acid resin film have high light transmittance, high strength and rigidity, and high heat resistance. Although it is easy to process and has relatively good weather resistance, it has a small impact strength and has the drawback of being attacked by strong alkalis and organic solvents. It is not necessarily compatible with the plasticity in PVC. For example, under environmental conditions such as high temperature and high humidity, the plasticizer seeps out on the surface of the film layer, causing a so-called bleeding phenomenon, and thus coating due to aging Loss of gloss on the surface and deterioration of aesthetics are unavoidable, and the required antifouling property is not sufficient, including cases such as long-term outdoor use.

After that, a laminate of a fluororesin film was proposed in order to obtain a better antifouling performance. For example, JP-A-56-60247 discloses that a film-shaped fluororesin having a substantially smooth surface is previously attached to the upper surface of a soft vinyl sheet to improve antifouling property. . Also, in the magazine "Plastics" Vol. 33, No. 5, pp. 68-75, published by the Industrial Research Society in May 1982, polyvinylidene fluoride was thinly coated on the outer surface layer, and acrylic resin was used as an intermediate adhesive. There is a description that, when a three-layer KFC film having PVC as a base material layer is overlaid on an industrial material, stain resistance can be imparted. These fluorine-based films give better antifouling properties than the acrylic resin coating layer, but when they are laminated on a soft vinyl chloride sheet containing a base cloth, wrinkles due to bending are not recovered and the appearance is poor. Become. In addition, severe repeated bending may cause cracking and film peeling.

The present invention solves the above-mentioned drawbacks of conventional antifouling tents. The outermost layer is made of fluorine resin, the intermediate layer is made of acrylic resin, and the base layer is made of vinyl chloride resin. It is intended to provide a laminated fabric having a three-layer composite coating layer having irregularities formed on the surface thereof on at least one side of a base fabric and having excellent antifouling property and flex resistance.

[0006]

[Means for Solving the Problems]

 Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 shows an example of a laminated fabric according to the present invention. One side of a fiber woven base fabric 1 has a fluorine resin layer 2 as the outermost layer, an acrylic resin layer 3 as an intermediate layer, and a chloride layer as a base material layer. A vinyl resin layer 4 is laminated. In this example, a single vinyl chloride resin layer 5 is laminated on the other surface. And, the projections and depressions 6 are formed on the surface of the outermost fluororesin layer.

The base fabric used in the present invention is preferably a fabric for tents and sheets made of synthetic fibers such as polyester and polyamide, and natural fiber materials such as cotton and hemp. Polyvinylidene fluoride is particularly suitable as the fluorine-based resin, but other fluorine-based resins can be used depending on the selection of the acrylic adhesive layer. As a method for laminating these resin layers, each layer is sequentially formed by a method such as coating or lamination, or a three-layer film formed in advance by coextrusion is laminated. The three-layer film may be thermocompression-bonded to the surface of the base cloth previously coated with the vinyl chloride resin. The three-layer film may be laminated on both sides of the base cloth.

The unevenness on the surface is formed by pressing the surface with a pressure roll having unevenness while the resin layer is heated and softened. The surface can be matted by using a pressurizing body having fine irregularities, but it is effective to use a pressurizing body having a slightly deep unevenness particularly when bending strength is required. The unevenness may be applied to a laminated fabric, or a three-layer film having unevenness may be laminated on a base fabric or a base fabric coated with a vinyl chloride resin. Hereinafter, an example of the present invention will be specifically described with reference to Examples.

[0009]

【Example】

 Hereinafter, an example of the present invention will be specifically described with reference to Examples. Example 1 A sheet base cloth made by weaving polyester filament yarn of 500 denier at a density of 20 yarns per 25.4 millimeters was blended with polyvinyl chloride consisting of the following ingredients. The outermost layer is about 5 micron polyvinylidene fluoride, the middle layer is polymethylmethacrylate, and the base layer is a three-layer composite film consisting of polyvinyl chloride. Then, it was adhered at 160 ° C. by a conventional roll thermocompression bonding method to obtain a laminated cloth. PVC: 100 parts DOP: 65 parts Ba-Zn stabilizer: 3 parts Calcium carbonate: 15 parts Organic orange pigment: 5 parts To improve the bending resistance and prevent cracking, this laminated fabric is treated with a pressure roll that has a slightly deep unevenness on the surface after laminating. Then, unevenness was formed. A comparative test was conducted by using a pressure roll with a smooth surface as a comparative sample to prepare a laminated fabric with a substantially smooth surface. The test was performed using a standard Scott type kneading machine and a flex tester. When a rubbing test was performed 3000 times with a Scott type rubbing machine under a load of 1 kilogram, no cracks were found, but in the comparative test, fine wrinkles occurred and a distinct change in appearance occurred. On the other hand, in Examples, almost no change in appearance was observed. As a result of 100,000 flexing tests using a flex tester, it was observed that the comparative sample had creases clearly recognized and innumerable fine wrinkles formed therein irreversibly. On the other hand, the creases were also observed in the example, but they were less noticeable than the comparative sample, and fine wrinkles were not observed.

[0010]

[Effect of device]

 The laminated fabric of the present invention has a three-layer composite coating layer having a fluorine resin as the outermost layer, an acrylic resin as the intermediate layer, and a vinyl chloride resin as the base material layer on at least one side of the base fabric. It is an excellent laminated fabric, and fluororesin, which has excellent antifouling properties, is firmly laminated to the vinyl chloride resin of the base material via acrylic resin, which has excellent adhesiveness, and the surface has improved bending resistance. Since it has effective irregularities, it is resistant to cracking and film peeling due to bending and maintains stable antifouling properties for a long time.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fiber woven fabric base 2 Fluorine type resin layer 3 Acrylic type resin layer 4 Vinyl chloride type resin layer 5 Vinyl chloride type resin layer 6 Unevenness

Claims (1)

[Scope of utility model registration request] 1. A three-layer composite coating layer comprising a fluorine-based resin as an outermost layer, an acrylic resin as an intermediate layer, a vinyl chloride-based resin as a base material layer, and unevenness formed on the surface of a base cloth. A laminated fabric having at least one surface with excellent stain resistance and flex resistance.