JPS602401B2 - Manufacturing method of vinyl chloride resin coated cloth gloves - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing vinyl chloride resin-coated cloth gloves that have a thin vinyl chloride resin coating layer, are highly flexible and have an excellent feel.

Traditionally, vinyl chloride resin-coated cloth gloves have been used as work gloves in the fishing industry, agriculture, mining industry, etc., but these gloves are required to have abrasion resistance, waterproofness, oil resistance, etc., so they are relatively coated with resin. The layer is thick and therefore rather hard;
It lacks flexibility and flexibility.

For light work that does not require much abrasion resistance, waterproofness, or oil resistance, thin, flexible gloves with a good texture are more suitable and desirable. The above-mentioned work gloves coated with vinyl chloride resin are generally made by covering the hand pattern with a cloth glove, soaking it in vinyl chloride resin plastisol, boiling it, dropping the excess sol, and then putting it in a heating furnace to gel the resin. The texture of the resin-coated glove is determined not only by the flexibility of the coating resin composition itself, but also by the degree of penetration of the coating resin into the fabric and the thickness of the coating resin layer. It is determined by

In particular, if the coating resin has a large amount of penetration into the fabric, the flexibility and feel of the glove will be significantly impaired. Conventionally, in order to prevent the percolation of vinyl chloride resin plastisols, plastisols with high viscosity and high yield values have been prepared and used by adding and blending thixotropic agents and the like.

For this reason, the cloth gloves obtained have a large sol coating thickness, and the gloves obtained by heating cannot be said to have good flexibility and feel.

To improve flexibility and texture, the viscosity of the sol must be lowered in order to make the coating layer thinner, but lowering the viscosity of the sol increases the penetration of the sol into the grains of the fabric, resulting in a poor texture. turn into. There is also a method of pre-packing the fabric grains to reduce the penetration of horse mackerel into the fabric grains even with a relatively low viscosity sol, but the work is complicated, the number of uses increases, and the effect of preventing horse mackerel penetration is not sufficient. .

The inventors of the present invention have conducted extensive research in order to obtain vinyl chloride resin-coated gloves that have a thin coating, a good texture, and are highly flexible. As a result,
This has led to the present invention. That is, the present invention involves moistening a cloth glove attached to a hand shape with a hydrophilic crosslinked polymer powder diluted with low concentration water, or moistening the cloth glove in advance with the aqueous dispersion and then attaching it to a hand shape. After drying, pour the core resin composition into a sol-like vinyl chloride resin composition or sprinkle the core resin composition over the cloth gloves to cover the cloth gloves, and remove the excess resin composition sufficiently. What was dripped into the
By heating to gel, melt, and then cool and demold, a vinyl chloride resin-coated glove with a thin vinyl chloride resin coating layer, rich in flexibility, and a good texture can be obtained. The present invention provides a method for obtaining a lightweight, highly flexible pinyl chloride resin glove with a thin covering layer and a small degree of penetration into the fabric grain, and is characterized by a hydrophilic cross-linked highly By using cloth gloves that have been pretreated with a low concentration aqueous dispersion of molecular powder, the viscosity is 3000. P. Even with the following low-viscosity vinyl chloride resin sol, penetration into the fabric grain is extremely small, and by heating and melting, a vinyl chloride resin-coated cloth glove with a thin coating layer with few adhesion groups of the vinyl chloride resin composition can be obtained.

Furthermore, being able to use a low-viscosity sol makes it possible to increase the amount of plasticizer used, which contributes to the softening of vinyl chloride resin-coated cloth gloves. This has the advantage that low-cost cloth gloves with thick threads and large weave can also be used.

Although it is not clear why the pretreatment of cloth gloves with the low concentration aqueous dispersion of hydrophilic cross-linked polymer powder in the present invention reduces the penetration of the sol-form pinyl chloride resin composition into the cloth, the hydrophilic It is thought that the crosslinked polymer partially melts in water, and a thin film of the dry fox core polymer is formed on the surface of the cloth or the threads that make up the cloth, which prevents the sol from penetrating.

A similar effect can be obtained by using a water-repellent polymer, but when using the hydrophilic crosslinked polymer of the present invention, it has a high viscosity due to its water absorption properties, so it does not fit between the fibers that make up the thread. It has the characteristic that it does not impair the texture of the grain. Also, if you sweat when using gloves, water-soluble molecules will be released into the sweat.
Although it can be sticky, hydrophilic crosslinked polymers also have the advantage of absorbing sweat and maintaining a crisp feel. The hydrophilic crosslinked polymer of the present invention is generally called a hydrogel, which absorbs water in a thin layer and is almost impermeable to water and organic solvents. For example, a combination of vinyl acetate and methyl acrylate is used. Examples include hard molded polymers, crosslinked polyacrylic acid, and crosslinked polymers obtained by graft polymerizing sodium acrylate to starch.

These hydrophilic crosslinked polymer powders are used as a low-concentration aqueous dispersion, but the concentration cannot be determined in particular because the viscosity or film-forming performance of the aqueous dispersion varies depending on the type of core polymer.

- In general, the viscosity is within the range that is easy to handle in the work process, does not change the feel of the cloth glove itself, and prevents sol from penetrating into the cloth glove, and the vinyl chloride resin coating after molding. The rut density is adjusted to an economical and practical level so that a thin film with a thickness that does not significantly reduce the peel strength between the gloves and the cloth gloves is formed. In the present invention, there are broadly two methods for moistening cloth gloves with a low concentration aqueous dispersion of hydrophilic crosslinked polymer powder.

One method is to directly wet cloth gloves worn by hand with the low-concentration aqueous dispersion of the hydrophilic crosslinked polymer powder by soaking, spraying, coating, etc. is desirable. The second method is to soak cloth gloves in the low concentration aqueous dispersion in advance, and then remove excess liquid by squeezing or centrifuging, and then attaching the gloves to a hand mold.

In this case, if too much impregnated water is removed, the hydrophilic crosslinked polymer film that should be formed on the fabric will not be sufficient, making it difficult to prevent the sol from penetrating. It is important to remove it in moderation. The sol-like vinyl chloride resin composition used in the present invention is made by dispersing vinyl chloride resin or vinyl chloride copolymer into a paste in a plasticizer, and contains pigments, fillers, heat stabilizers, A diluent, a thixotropic agent, a vinyl chloride resin for viscosity dilution, etc. are added as appropriate, and these gloves are used in ordinary vinyl chloride resin-coated cloth gloves.

A knitted fabric, a woven fabric, or a non-woven fabric can be used as the fabric, but it is preferable to use a fluffy thread in order to improve the adhesion of the resin to the fabric and to prevent threads from showing through. -Generally, gloves made of sewn lining cloth or automatically knitted are used. The fuzz on the surface of cloth gloves is related to the thickness of the attached plastisol layer, so
If you want to make the thickness thinner, you can fluff it according to the usual method, or you can use a cloth glove moistened with a low-concentration aqueous dispersion of hydrophilic cross-linked polymer without fluffing it, and then squeeze it a little on your hand. It is sufficient to feed the fluff to a horizontally similar state and then dry and fix it.

As the hand mold, a commonly used metal mold such as aluminum or a ceramic mold can be used.

Cloth gloves are coated with sol by dipping or sprinkling, but from the perspective of preventing moisture from seeping into the fabric, it is better to hold the hand pattern horizontally rather than immersing it vertically due to liquid pressure. Rotary dipping or furikake method is preferable.

Next, the present invention will be explained with reference to Examples, but the present invention is not limited thereto.

Example 1 Vinyl chloride resin composition Sumilit ■IHX-M (vinyl chloride resin, manufactured by Sumitomo Chemical Industries) 7 parts by weight Sumilit ■EX-13 (vinyl chloride resin, manufactured by Sumitomo Chemical Industries)
30 dioctyl phthalate
100 dibutyl phthalate
30 Kyowa Scissor NB-10 (plasticizer, manufactured by Kyowa Hakko), 〇VR-6 Group-1 (stabilizer, manufactured by Kyodo Yakuhin)
3 Olben P (gelling agent, manufactured by Shiraishi Kogyo) 6 Pigment
1.5 pairs of 34 pairs of automatic line seamless line gloves are attached to aluminum metal, and 1% of Sunwet ■ (hydrophilic cross-linked polymer, manufactured by Sanyo Chemical) fine particles is applied to the aluminum metal.
Apply an aqueous dispersion (viscosity 1600.P.) and
After drying by heating for 7 minutes in an atmosphere of Then, I put it in a hot air circulation oven of 19 pi○ and heated it for 10 minutes.
By heating and melting the gloves for 1 minute, taking them out of the furnace, and cooling and demolding, there is no penetration of the resin into the seamless wire gloves, and the resin coating is highly flexible and has excellent fit with a resin coverage of 1 x 96 mm. Cloth gloves were obtained.

Example 2 Automatic line seamless line gloves of Issou Kyushu were made with Sumikagel ■ (a resin material of pinyl acetate and methyl acrylate copolymer,
(manufactured by Sumitomo Ibigaku) 1% water solution of fine particles (viscosity 260.
P. ), and then squeezed out the excess immersion (120 mL of liquid-impregnated base), mounted it on an aluminum hand mold, heated and dried in an atmosphere of 120°C for 15 minutes, and then removed the vinyl chloride of Example 1. By coating the resin composition in the same manner as in Example 1, the resin does not penetrate into the seamless wire gloves, and a vinyl chloride resin with excellent flexibility and compatibility with a resin coating amount of 1 x 90 mm is obtained. A coated cloth glove was obtained.

Comparative Example The same seamless wire gloves used in Examples 1 and 2 were
When the vinyl chloride resin composition of Example 1 was coated in the same manner as in Example 1 without being wetted with an aqueous dispersion of hydrophilic crosslinked polymer powder, resin penetration was observed on the back of the glove.
Only cloth gloves coated with vinyl chloride resin, which had a resin coating amount of 120 mm and had poor flexibility, were bound.

Claims (1)

[Claims] 1 Wet the cloth gloves before or after being worn on the hand shape with a low concentration aqueous dispersion of hydrophilic crosslinked polymer powder, heat and dry this, and then cover it with a sol-like vinyl chloride resin composition, A method for manufacturing vinyl chloride resin-coated cloth gloves having a thin vinyl chloride resin coating layer, high flexibility, and good hand feel, which method comprises then heating and melting, cooling, and demolding.