JPH04245976A - Textile treated with vinyl chloride resin - Google Patents

Abstract

PURPOSE:To obtain the subject treated textile having durable stain-proofing property by topping a vinyl chloride resin to a woven fabric of a polyester fiber and coating the fabric with a specific solvent-type fluororesin. CONSTITUTION:A woven fabric of e.g. polyester multifilament yarn is topped with a vinyl chloride resin composition containing a vinyl chloride resin, a plasticizer, etc., and a surface of the topped fabric is coated with a solvent-type fluororesin composed mainly of a copolymer of a fluoroolefin and an alkyl vinyl ether using a knife coater, etc. The coated fabric is heat-treated and cross-linked to obtain the objective stain-proofing cloth treated with vinyl chloride resin, resistant to adhesion of stain, easily cleanable if stained and having excellent durability.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vinyl chloride resin-treated fabric used for truck seats, outdoor seats, large tents, etc.

0002

BACKGROUND OF THE INVENTION Tents, track sheets, etc. coated with vinyl chloride resin have been well known. These fabrics are made by knitting and weaving fabrics using spun yarns or long fiber yarns such as vinylon, polyamide, polyester, aramid, etc., and are processed by various methods such as dipping, coating, topping, and laminating using vinyl chloride resin. It is manufactured by applying

[0003] The reason why vinyl chloride resin is widely used is that it has excellent processability, various processing methods can be adopted, and the flexibility of the resin can be adjusted arbitrarily by adjusting the plasticizer. , Soft vinyl chloride resin can be sewn using high-frequency welder welding processing.

As mentioned above, vinyl chloride resin-treated fabrics have many advantages, but they tend to get dirty because they are exposed outdoors for long periods of time. In other words, with vinyl chloride resin-treated cloth, the plasticizer in the vinyl chloride resin gradually migrates to the surface during use, becoming sticky and easily attracting dirt from the atmosphere, resulting in a noticeable deterioration in appearance. do. Various methods have been proposed to solve these problems, and a typical method is to coat the surface of the processed cloth with an acrylic resin such as polyacrylic acid ester or a urethane resin. However, in this method of coating with acrylic acid resin and urethane resin, the plasticizer in the vinyl chloride resin migrates to the surface through the layer of acrylic acid resin and urethane resin, resulting in poor sustainability of the effect. In addition, the method of laminating fluorine-based films such as tetrafluoroethylene films is as follows.
Although it has excellent antifouling performance, it is disadvantageous in terms of cost.
No. 980), it was not possible to obtain sufficient durable antifouling properties, and no method, including other methods, that satisfies all of the antifouling performance, durability, workability, cost, etc. has yet been found.

[0005]

[Problems to be Solved by the Invention] The present invention was made in view of the current situation, and its purpose is to obtain a vinyl chloride resin-treated cloth that has excellent durability and antifouling properties. be.

[0006]

[Means for Solving the Problems] The present invention achieves the above object and has the following configuration. That is, the present invention relates to a processed fabric coated with a processing agent containing a vinyl chloride resin as a main component, which is coated with a solvent-based fluororesin mainly composed of a copolymer of fluoroolefin and alkyl vinyl ether, and cross-linked. The gist of this invention is a vinyl chloride resin-treated cloth characterized by being subjected to a chemical treatment. The present invention will be explained in detail below.

[0007] The vinyl chloride resin mentioned here refers to a vinyl chloride polymer, a vinyl chloride-vinyl acetate copolymer, a vinyl chloride-vinylidene chloride copolymer, or a mixture of the above polymers or copolymers with a stabilizer and a plasticizer. Refers to resins containing additives, flame retardants, and other additives.

The fabric used in the present invention is a knitted fabric made of cotton, rayon, and synthetic fibers such as polyamide, polyester, polyaramid, vinylon, etc. spun or long fiber yarn in a desired structure.

Further, the polymer of fluoroolefin and alkyl vinyl ether of the present invention contains 40 to 60 mol% and 60 to 40 mol% of units based on fluoroolefin and alkyl vinyl ether, respectively,
Examples include those having an intrinsic viscosity of 0.03 to 1.5 dl/g as measured in tetrahydrofuran at 30°C. Preferred fluoroolefin components include tetrafluoroethylene and chlorotrifluoroethylene, and preferred alkyl vinyl ether components include linear, branched, or aliphatic compounds in which R has 2 to 10 carbon atoms in the general formula CH2=CHOR. Examples include cyclic alkyl groups and linear, branched, or alicyclic hydroxy group-containing alkyl groups having 2 to 8 carbon atoms. As a specific example, chlorotrifluoroethylene (CTFE) is used as the fluoroolefin component, and cyclohexyl vinyl ether (CHVE), ethyl vinyl ether (EVE), and hydroxybutyl vinyl ether (HBVE) are used as the alkyl vinyl ether components. Molar ratio is 50.0/14.8/25.8
Examples include those copolymerized with /9.8. This polymer has good processability, can be coated on vinyl chloride resin without a primer, and has good adhesion.

In the present invention, an isocyanate is used in combination with the polymer of fluoroolefin and alkyl vinyl ether in order to three-dimensionally crosslink the unsaturated groups of the polymer and improve durability by increasing film strength. Preferred isocyanates include diphenylmethane diisocyanate, 2,4 toluene diisocyanate, and the like. The amount of isocyanate used is 10 to 30 wt% of the mixed resin in terms of solid content; if it is less than 10%, sufficient crosslinking will not occur, resulting in weak film strength, and if it is more than 30%, isocyanate monomer may remain. . Also,
In order to improve the light resistance of the base vinyl chloride resin-treated fabric, it is also possible to add an ultraviolet absorber or the like.

As the mixed solvent, highly volatile aromatic hydrocarbons typified by toluene and ketones typified by methyl ethyl ketone are used either singly or in combination. As a method for coating the vinyl chloride resin-treated cloth with a prepared mixed resin, coating methods such as padding, gravure coating, knife coating, etc. can be employed. Regarding the amount of coating, in order to fully satisfy the performance, it is necessary to apply the coating at a solid content of 1 to 20 g/m2. If the amount of adhesion is less than 1 g/m2, no effect will be observed, and if it is more than 20 g/m2, cracks will occur and it will be impossible to apply uniformly.

[0012] The crosslinking reaction of the unsaturated groups of the polymer of fluoroolefin and alkyl vinyl ether is carried out after coating the vinyl chloride resin-treated fabric with the mixed resin, and this crosslinking reaction is carried out at a temperature of 150°C or lower. When the temperature exceeds 150℃, the vinyl chloride resin begins to soften, making processing difficult.
Sufficient antifouling performance cannot be obtained. The present invention has the above configuration.

[0013]

[Function] The vinyl chloride resin-treated cloth of the present invention has a vinyl chloride resin layer coated with a solvent-based fluororesin mainly composed of fluoroolefin and alkyl vinyl ether copolymer, so it is difficult to get dirty during use. Moreover, the water pressure resistance of the vinyl chloride resin surface can be improved.

[0014]

[Example] Example 1 Both warp and weft are polyester multifilament yarn 7
Using 50 denier/70 filament, weave density is 2
A woven fabric with a plain weave structure of 0 threads/inch and a weft of 21 threads/inch was woven, this gray fabric was heat set at 185°C for 30 seconds, and this was used as a base fabric with a vinyl chloride resin composition having the following composition-1. Topping processing (processing temperature: 170°C, coating amount: 50 g/m2) was applied to both sides, and baking processing was performed at 180°C to produce a vinyl chloride resin-treated cloth.

[Composition-1] - Vinyl chloride resin compound
100 parts by weight
・Di-N-octyl phthalate (plasticizer) 60 parts by weight ・Calcium carbonate (filler)
20 parts by weight
・Lead stearate (stabilizer)
3 parts by weight ・Face
fee
10 parts by weight

[0016]Next, one side of the vinyl chloride resin-treated cloth was coated with a processing solution having the following composition-2 using a knife coater (solid content: 10 g/m2). [Composition-2] ・Florotop FT-1030
100 parts by weight
(Fluoroolefin and alkyl vinyl ether copolymer, active ingredient 50%, manufactured by Asahi Glass Co., Ltd.) - Fluorotop hardener
20 parts by weight (
After drying (80° C., 2 minutes), heat treatment for crosslinking was performed at 130° C. for 2 minutes.

Comparative Example 1 Comparative Example 1 was a vinyl chloride resin-treated cloth before being coated with the processing solution of Composition-2 in Example 1.

Comparative Example 2 The following composition-3 was applied to the vinyl chloride resin-treated cloth before coating with the processing solution of composition-2 in Example 1.
Coating processing (solid content: 10 g/m2) was performed on one side using a knife coater using a processing solution of. 〔set
Sei-3] ・Cefural Soft (active ingredient 20
%) 60 parts by weight
(Fluorine-based elastomer, made by Central Glass)
・Methyl ethyl ketone
After drying 40 parts by weight (100°C, 2 minutes), heat treatment was performed at 150°C for 2 minutes.

The obtained vinyl chloride resin-treated cloths of Example 1 and Comparative Examples 1 and 2 were placed in a stain compound having the following composition, stirred 100 times/day, and kept in a constant temperature bath at a temperature of 83° C. for 6 months. I left it for a while. In addition, in order to examine washing resistance, a similar test was conducted after 10 washes. Furthermore, outdoor exposure was performed for 3 years. Table 1 shows the surface observation results of each sample after wiping with tissue paper and washing with water. [Stain compound composition] Peat moss 38% by weight Cement 17% by weight Kaolin clay 17% by weight Silica gel 17% by weight Carbon black 1.75% by weight Iron oxide
0.5% by weight Mineral oil (heavy oil A) 8.75% by weight

[0020]

[Table 1]

[0021] As is clear from Table 1, the vinyl chloride resin-treated fabric of Example 1 has superior stain resistance and durability compared to Comparative Examples 1 and 2. Ta.

[0022]

Effects of the Invention The present invention provides a method for applying a solvent-based fluorine containing a polymer mainly composed of a fluoroolefin and an alkyl vinyl ether copolymer to a fabric coated with a finishing agent mainly composed of a vinyl chloride resin. Since it is coated with resin and cross-linked, it is difficult for dirt to adhere to the surface, and even if it does, it is easy to remove. It also improves the water pressure resistance of the surface of the vinyl chloride resin, thereby preventing moisture from entering the resin and increasing the durability of the resin layer. As described above, the present invention can provide a stain-resistant vinyl chloride resin-treated cloth that is durable and can be used in a wide range of fields.

Claims (1)

[Claims] Claim 1: A processed cloth coated with a finishing agent mainly composed of vinyl chloride resin, the coated surface of which is coated with a solvent-based fluororesin mainly composed of a copolymer of fluoroolefin and alkyl vinyl ether. A vinyl chloride resin-treated cloth characterized by being coated and crosslinked.