JP3197943B2 - Brushed product made of natural rubber and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brushed product such as work gloves and boots made of natural rubber, and more particularly, to a brushed product having a sufficient brush for keeping heat on its inner surface and using natural rubber as a base material. It relates to the manufacturing method.

[0002]

2. Description of the Related Art Work gloves, boots and the like are often brushed on the inner surface using a pile in order to improve heat retention, and as a matter of course, work gloves and boots using vinyl chloride as a base material. Brushing treatment with a high flocking density is performed (hereinafter, working gloves, boots, and the like on which the brushing treatment has been performed may be referred to as “brushed products”).

However, in the case of working gloves, boots and the like using a natural rubber as a base, even if the inner surface is brushed at a high flocking density, the pile adhesive strength is weak and the pile can be easily removed. Not very often brushed.

[0004] In working gloves and boots in which the base is natural rubber, the reason why the raising treatment is not performed at an excessively high flocking density is as follows. That is, for flocking,
It is necessary to use an adhesive to bond the pile, but if something other than natural rubber is used as the flocking adhesive, delamination or cracking of the adhesive will occur, so natural rubber must be used as the adhesive I can't get it. However, this natural rubber has a disadvantage that the adhesiveness with a flocked pile of rayon, cotton or the like is not sufficient, and the pile that has been flocked during use is easily removed.

[0005] For these reasons, working gloves and boots made of natural rubber as a base have not been subjected to a raising treatment at a high flocking density.

[0006]

However, even in working gloves and boots using natural rubber as a base, it is necessary to raise the inner surface of the gloves with a high flocking density. There has been a demand for the development of a brushed product with a high flocking density.

[0007]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to obtain a brushed product having an excellent texture of natural rubber and having an inner surface uniformly implanted at a high flocking density. If an anchor coat layer which is a polymer layer selected from urethane resin, modified rubber and epoxy resin having an affinity for both layers is provided between the base layer and the adhesive layer, It has been found that even if a material other than natural rubber is used, problems such as delamination and cracking of the adhesive layer do not occur. Then, they have found that if an acrylic adhesive widely used in brushed products made of vinyl chloride is used as the adhesive, the pile can be uniformly implanted with high adhesive strength and high flocking density.

[0008] The present invention has been completed based on the above finding, which is on the natural rubber substrate, a polymer layer selected from urethane resins, modified rubber and epoxy resin-en
It is intended to provide a natural rubber glove or boots provided with a car coat layer and an acrylic adhesive layer, and a pile planted in the acrylic adhesive layer, and a method for producing the same.

In the brushed product made of natural rubber according to the present invention, an anchor coat layer having an affinity for both the base layer and the adhesive layer is provided on a base layer formed of natural rubber,
Further, after providing the acrylic adhesive layer, the hair may be implanted according to a conventional method.

That is, for example, a mold adapted to a desired raised product is first immersed in a coagulant solution, dried, and then immersed in a natural rubber latex solution. The hand mold is pulled up, dried and formed into a film, then immersed in warm water to elute and remove the coagulant, thereby forming a natural rubber substrate on the mold. As the coagulant, a compound that coagulates latex particles such as calcium nitrate and calcium chloride is used.

Next, the natural rubber substrate prepared as described above is immersed in a urethane resin emulsion, a modified rubber emulsion or an epoxy resin emulsion while being adhered to the mold, and formed into a film according to a conventional method to form an anchor coat layer. Is formed.

Specific examples of urethane resin emulsions include anionic polyurethane emulsions such as Eizelux S-8040N (Hodogaya Chemical Industry Co., Ltd.)
Coatex MG-25 (manufactured by Musashino Chemical Co., Ltd.) as an example of the modified rubber emulsion, and Yucalezin KE as an example of the epoxy resin emulsion.
-178 (manufactured by Yoshimura Kosan Co., Ltd.).

Of these, the urethane resin layer is formed, for example, by immersing the natural rubber substrate formed as described above in a urethane resin emulsion diluted with water or the like, if necessary, at 50 to 100 ° C. It is performed by drying for about 1 to 10 minutes. Generally, the thickness of the anchor coat layer may be about 10 to 100 μm.

Further, after the anchor coat layer is formed on the natural rubber substrate in this manner, a pile is implanted by a conventionally known method, and the pile is released from the mold to obtain a raised product.

That is, after dipping in an acrylic adhesive,
By drying at 0 ° C. for 2 minutes and then implanting the pile by an electrostatic flocking method applying a high voltage of, for example, about 30,000 V,
A flocking product with a high density of flocking is obtained. As a pile used for flocking, fibers such as rayon and cotton having a thickness of about 0.5 to 1.5 denier and a length of about 0.3 to 1.0 mm are used.

[0016]

The conventional natural rubber adhesive has a remarkably weak adhesive strength to the pile and can be easily removed even if the flocking density is increased, so that the electrostatic flocking method could not be practically used. Therefore, the flocking method has been employed to carry out the flocking, but in this case, there is a disadvantage that the flocking density cannot be increased.

The present invention provides an adhesive other than natural rubber by applying an anchor coat layer on a natural rubber substrate layer.
For example, an acrylic adhesive can be used, and as a result, for the first time, high-density flocking can be achieved in a natural rubber flocking product.

[0018]

EXAMPLES Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

EXAMPLE 1 A ceramic hand mold was immersed in a 35% aqueous solution of calcium nitrate for 1 minute, pulled up, dried at 80 ° C. for 2 minutes, and further immersed in natural rubber latex for 1 minute. Then, after being immersed in warm water of 70 ° C. for 10 minutes, a polyurethane emulsion (Eiselux S-8040N;
(Hodogaya Chemical Industry Co., Ltd.) for 1 minute and left at 70 ° C. for 2 minutes to form a semi-dry polyurethane resin layer.

Further, this was immersed in an acrylic emulsion (Nippol NC-523B; manufactured by Nippon Zeon Co., Ltd.) for 1 minute, and then used an electrostatic flocking machine (manufactured by Kasuga Electric Co., Ltd.) with rayon pile (IDXS; ) Made by Nissen).
After the flocking, drying (vulcanization) was performed at 100 ° C. for 40 minutes, followed by cooling and releasing to obtain a natural rubber flocking glove. The gloves were implanted at a high density of 50,000 to 100,000 / cm ² , and there was no problem such as falling off of the pile.

Example 2 A natural rubber flocked glove was obtained in the same manner as in Example 1 except that the polyurethane emulsion was replaced with Coatex or Yucalesin. Like these gloves obtained in Example 1, these gloves were planted at a high density, and there was no problem such as falling off of the pile.

COMPARATIVE EXAMPLE 1 A ceramic hand mold was immersed in a 35% aqueous solution of calcium nitrate, dried with water, and immersed in natural rubber latex.
Next, after being immersed in warm water, it was immersed in a natural rubber adhesive (manufactured by the company), and a cotton pile (manufactured by Nissen Corporation) was planted by a blow flocking method. After flocking, 100 ℃ 4
After drying (vulcanization) for 0 minutes, the mixture was cooled and released to obtain a flocked glove made of natural rubber. The flocking amount of this product was extremely smaller than that of Example 1.

[0023]

The brushed product made of natural rubber according to the present invention prepared as described above is uniformly implanted, has an excellent texture, and is free from problems such as delamination and cracking of the adhesive. There was nothing. Therefore, the present invention can be advantageously employed in flocked products such as work gloves and boots and in the production thereof.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-222330 (JP, A) JP-A-54-50581 (JP, A) JP-A-2-21801 (JP, A) 16188 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) B32B 1/00-35/00 A43B 23/00-23/30 A41D 19/00-19/04

Claims (6)

(57) [Claims] 1. An anchor coat layer and an acrylic adhesive layer, which are polymer layers selected from urethane resin, modified rubber and epoxy resin, are provided on a natural rubber substrate, and piles are planted on the acrylic adhesive layer. Gloves made of natural rubber. 2. A urethane resin, a modified resin, on a natural rubber substrate.
Polymer layer selected from functional rubber and epoxy resin
An anchor coat layer and an acrylic adhesive layer are provided.
It is characterized in that piles are planted on the cryl adhesive layer
Natural rubber boots. 3. An urethane coating on a substrate layer formed of natural rubber.
Resin selected from epoxy resin, modified rubber and epoxy resin
An anchor coat layer as a child layer is provided, and then an acrylic
After providing the adhesive layer, the pile can be manufactured by electrostatic flocking.
A method for producing natural rubber gloves, characterized in that: 4. A urethane coating on a base layer formed of natural rubber.
Resin selected from epoxy resin, modified rubber and epoxy resin
An anchor coat layer as a child layer is provided, and then an acrylic
After providing the adhesive layer, the pile can be manufactured by electrostatic flocking.
And a method for producing natural rubber boots. 5. The method according to claim 1, wherein the anchor coat layer is formed of a urethane resin.
Marjon, modified rubber emulsion and epoxy resin
Immerse in an emulsion selected from emulsions,
Claims characterized by being formed by drying
Item 4. The method for producing a natural rubber glove according to Item 3. 6. The method according to claim 1, wherein the anchor coat layer is formed of a urethane resin.
Marjon, modified rubber emulsion and epoxy resin
Immerse in an emulsion selected from emulsions,
Claims characterized by being formed by drying
Item 4. The method for producing natural rubber boots according to item 4.