JPH0621365B2 - Manufacturing method of waterproof rubber gloves with cloth - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to waterproof rubber gloves. Used for action and household use.

[Prior art]

Rubber gloves made of rubber latex are often made of rubber alone, and some have flocked inner surfaces. Also, for work, there is one in which rubber latex is applied and reinforced mainly on the surface of work gloves, particularly the palm surface. Conventionally, a rubber glove with a cloth has a method of sticking a raw rubber sheet to the outer surface of the cloth glove (Japanese Patent Laid-Open No. 55-90601), and a rubber latex after sewn an independent foaming type foam sheet to the outer surface of the cloth glove in advance. There is a method of dipping (JP-A-62-69808). The latter is waterproof rubber gloves, but generally there are few waterproof rubber gloves with a cloth, and those made of PVC (Japanese Patent Laid-Open Nos. 60-59107 and 49-2
7557) and polyurethane (JP-A-48-93441).

[Problems to be Solved by the Invention]

Waterproof gloves made of rubber alone are uncomfortable because the inner surface is sweaty when used, and they are hard to slip, so they are difficult to put on and take off. If the inner surface is flocked, slippage is improved and the removability is improved, but the improvement of stuffiness is insufficient. The present invention therefore seeks to provide a waterproof rubber glove having a cloth on the inner surface. If the rubber layer of the waterproof rubber glove is thick, it is difficult not only to fit into a hand mold during use, but also to grip things and do other work. Workability is particularly poor when working with fingertips. In order to improve workability, it is necessary to make the rubber layer thin, and therefore, the most suitable manufacturing method technically and economically is the latex dipping method. A cloth glove made of a stretchable cloth, particularly a knitted cloth, has considerably large stitch holes. If this is covered with a hand mold and dipped in latex, leaking of the latex is unavoidable. Leakage of latex hinders the stretchability of cloth gloves and increases the bending resistance during use, which significantly hinders the workability of rubber gloves. In particular, in working gloves, generally, when a hand mold is put on, there is a stitch hole of at least 0.3 to 0.5 mm, and it is unavoidable that pinholes are formed in the latex coating itself. It is because of this problem that there is conventionally no waterproof rubber glove with cloth made by the latex dipping method. SUMMARY OF THE INVENTION The present invention is intended to solve the problem of leaking and sealing of a cloth glove and form a thin rubber coating layer by a latex dipping method to manufacture a flexible and workable waterproof rubber glove.

[Means for Solving the Problems]

The present invention comprises a cloth glove covered with a hand mold containing a coagulant, and immersing the coagulant in a foamed rubber latex to form a coagulated layer of foamed rubber latex on the outer surface of the cloth glove. It is characterized by being immersed in latex to form a solid rubber coating on the outer surface.

【The invention's effect】

According to the present invention, the cloth glove covered with the hand mold contains the coagulant and is immersed in the foamed latex, so that the latex coagulates on the outer surface of the cloth glove in a foam structure. That is, a solidified layer of foamed rubber is formed. This coagulation layer does not leak because the water pressure is low unlike ordinary liquid latex because the hand mold is immersed in the foam, and the coagulation layer does not easily penetrate into the pores due to the foam structure. Because of its nature, it does not leak. Thus, even if there is a stitch hole of about 0.3 to 0.5 mm, the coagulated layer of foamed rubber does not leak, so it does not interfere with the stretchability of the cloth glove, and it does not affect the flexibility of the product. Workability is maintained. At the same time, the coagulation layer plays the role of sealing the rubber latex that is then dipped, and eliminates the fear of pinholes in the solid rubber coating, so it is necessary to form the solid coating thicker than necessary in view of safety. It contributes to the improvement of flexibility and workability. Since the solid rubber coating of the outer layer is formed by dipping in latex, it can be thinly formed. in addition,
Since there is a foam rubber layer between the cloth gloves and the solid rubber coating,
The flexure of the solid rubber coating can be structurally buffered, resulting in a rubber glove with a softer feel.

EXAMPLE FIG. 1 shows an example. 40 gloves, 4 cloths, knitted with knitted cotton thread, or long cloth gloves (1) are put on the curved hand mold (4) and immersed in 100 parts by weight of calcium nitrate and 50 parts by weight of methanol in a coagulant solution. And pull it up at 70 ℃ for 20
Dry for minutes. Drying does not have to be complete. This is the first
The compounded latex in the table is immersed for 5 minutes in a bath previously foamed by occasional stirring and then pulled up. Coagulated layer of about 0.5 mm with the compounded latex foamed on the surface of the cloth glove (2)
The uncoagulated foam latex is pulled up in a state where it adheres to it, so the uncoagulated foam latex is blown off with air, washed off with a water shower, or immersed in water for removal. . The cloth glove (1) put on the hand form (4) is pulled to some extent to fit the hand form well, so the stitches are open and at least 0.3 mm.
There is a hole of about 0.5 mm or larger depending on the location.
When it is dipped in ordinary blended latex, it leaks all over the surface due to water pressure, and the latex penetrates to the back of the cloth glove, not only making the texture of the cloth glove worse, but also dipping the stitches of the glove to increase bending resistance and flexibility. However, in this example, the foamed latex coagulated layer (2) exists in a state of being bridged to the stitches of the cloth glove (1), and the part that penetrates from the hole of the stitches to the back of the cloth glove does not exist. There wasn't. The thickness of the foamed latex coagulation layer (2) is adjusted by the immersion time. Then, it is dried at 75 ° C. for 30 minutes, cooled, and then immersed in the compounded latex of Table 1 for 1 minute and pulled up. Initially, due to the effect of the coagulant contained in the cloth gloves, a 0.4-0.5 mm thick solid rubber coating (3) is formed on the surface of the foamed latex coagulation layer (2). If it is desired to supplement the coagulant, the coagulant may be dipped in the coagulant solution again and dried to adhere the coagulant to the surface of the foamed latex coagulation layer, but this step is usually unnecessary. Then, while gradually heating up to 100 ° C and drying, vulcanize at 100 ° C for 40 minutes. After vulcanization, the gloves are removed from the hand mold and immersed in running water to elute and remove the coagulant, and dried to obtain the product. The cloth glove used in the present invention may be either ordinary work gloves or gloves sewn by cutting a knitted woven cloth, and even when the cloth glove is opened as a hole of about 1 mm when put on a hand mold. , It is possible to stop. As the latex, a latex compound such as natural rubber or synthetic rubber generally used for dipping can be used, and the foaming latex and the latex for forming the rubber film do not have to be the same. The foaming latex is uniquely considered because the stability of the foam affects work operation and sealing. For example, when foaming was opportunistically foamed with the composition shown in Table 2 and the stability of foam was left to stand, NO.1 and NO.3 had foam disappeared after foaming for 18 hours. NO.4 is 3 times and 4.5 respectively
Double the amount, the foam is stable, workability is good, and
The effect of blocking due to foam bridging is good.

[Brief description of drawings]

FIG. 1 shows an embodiment in which a part is cut away to show a cross section. 1 ... Cloth gloves, 2 ... Coagulation layer (foamed rubber layer), 3 ... Rubber coating, 4 ... Hand mold.

Claims (1)

[Claims] 1. A hand gloves covered with a coagulant, which is dipped in a foamed rubber latex to form a coagulated layer of foamed rubber latex on the outer surface of the cloth glove, and then a normal rubber latex. A method for producing a waterproof rubber glove with a cloth, which comprises immersing in water to form a solid rubber coating on the outer surface.