JPH01222931A - Manufacture of glove - Google Patents

Abstract

PURPOSE:To easily and effectively manufacture a flexible glove, which has surface with enough strength for withstanding wear, thrusting and scratching, as well as feeling of fittedness and favorable workability, by a method wherein a glove-shaped piece is supported by a hand pattern as core and the expansion of foaming rubber compound at vulcanization under heat is checked by the tension of a jacket material. CONSTITUTION:By successively laminating the constitutional materials of a glove-shaped piece to one another in the order from the innermost side constitutional material to the outermost side constitutional material on a hand pattern, the glove-shaped piece is supported by the hand pattern. The air permeable jacket material concerned means material, which can check the expansion due to foaming of rubber and is air permeable, such as fibers and does not limit to fibers. In order to check the expansion, only the checking by the material, which withstands the expansion pressure, which presents after the predetermined expansion is obtained by the foaming of rubber, is necessary. Any material, the tension of which can withstand against the expansion pressure, can be used as the jacket material. As the heat-foamable rubber compound, general rubber compound blended with foaming agent is employed.

Description

[Detailed description of the invention]

B) Industrial fields of application The present invention is applicable to household use, cold protection, anti-vibration, and anti-slip properties. This invention relates to a method for manufacturing work gloves that require flexibility, surface strength, etc. Mouth) A foam layer is added to conventional technical gloves such as military gloves to provide anti-vibration and cold protection. Gloves that attempt to provide effects such as anti-slip properties and heat retention are known. There are anti-vibration work gloves in which raw rubber containing a foaming agent is pasted on military knitted gloves, raw flat rubber is pasted on top of the raw rubber, the material is inserted into a hand mold, and then placed in a vulcanizing can and vulcanized and foamed. Showa 55-9
No. 0601). The raw flat rubber is pasted on the outside of the raw rubber mixed with a foaming agent for reinforcement. When raw rubber containing a blowing agent is vulcanized to form a rubber foam, press vulcanization is generally performed in order to obtain uniformity and dimensional stability of the cells. In open vulcanization (which refers to vulcanization in an oven space, such as hot air vulcanization, as opposed to press vulcanization, which applies high pressure in the closed space of a mold), abnormally large air bubbles are generated here and there, causing the appearance to deteriorate. A phenomenon called so-called abnormal bubbles that cause unevenness is likely to occur, and the dimensions are not stable. Since raw rubber stretches well, foaming during vulcanization cannot be suppressed. Japanese Patent Application Laid-Open No. 59-95135 proposes a glove in which a foam layer is laminated on the surface of a web to take advantage of the foam's anti-slip effect and object-holding effect. Although this is a well-known effect of foam, it is susceptible to scratches and other flaws during work and has problems with surface strength. Non-directional fibers are made microporous to give surface strength! An adhesive layer having kII weave is laminated on the outside of the rubber glove base to form a protective layer (Utility Model No. 59-8
No. 3922), rubber gloves reinforced by pasting filamentous materials such as fibers, cloth, ropes, etc. on the characters (Utility Model No. 61-5071)
No. 7). Both are fibrous materials that prevent damage such as abrasion and tearing, and the former has a microporous structure that provides a non-slip surface effect and contributes to flexibility, while the latter prevents rubber gloves from slipping easily when wet. The filamentous body improves. However, in both cases, the rubber glove base is made of ordinary rubber, so there is little improvement over conventional gloves in terms of flexibility, fit spacing, etc. during work. Particularly in work that frequently uses wires, such as electrical work, the surface of rubber gloves is often damaged by abrasion, punctures, scratches, etc., so it is best to wear insulating rubber gloves and then leather gloves when working. In many cases, it is desirable to improve overall flexibility and fit. c) Purpose of the invention Gloves have a strong surface that can withstand abrasion, punctures, and scratches.
To provide a method for easily and effectively manufacturing gloves that are flexible, have a comfortable fit, and have good workability. 2) Structure of the Invention The present invention has a structure in which at least a part of a glove-shaped glove is covered with a sheet of heat-foamable unvulcanized rubber compound and a flexible outer covering material (for example, fibers). This object is achieved by forming a glove shape using the hand shape as a core, and regulating the expansion of the rubber compound foamed during heat vulcanization by the tension of the outer covering material. Here, the term "breathable outer cover material" refers to a material such as fibers that can control expansion due to foaming of rubber and is breathable, and is not necessarily limited to fibers. In order to control the expansion, it is only necessary to obtain a predetermined expansion by rubber foaming, and then restrict the expansion with a material that can withstand the expansion pressure at that point.Any material whose tension can withstand this expansion pressure is the jacket material of the present invention. Can be used as Typical breathable jacket materials are textiles, including wovens, nonwovens, and leather. There are two ways to support the glove shape using the hand shape as the core. That is, (1) a method of sequentially laminating layers from the innermost component material of the glove shape to the outermost component material on the hand shape;
(2) A method of forming a glove shape in advance and covering the hand shape with it. As the heat-foamable rubber compound, a general rubber compound blended with a blowing agent is used. In particular, when a rubber foam is produced by open vulcanization, a rubber foam with a quick elasticity recovery response can be obtained. Examples of thermoplastic rubbers include styrene-butadiene-styrene block copolymers and styrene-isoprene-styrene block copolymers. There are hydrogenated versions of them and other polymers.
It melts and flows when heated and exhibits rubber-like elasticity at the operating temperature. Glove-shaped sheets of rubber compound can be prepared by (1) using the rolled sheet as is, or (2) dipping the hand shape in a solution of the comb compound or latex containing a foaming agent, pulling it up, drying it, and placing it on the hand shape. A sheet may be formed. When covering the outside of a sheet of unvulcanized rubber compound with a covering material, the rubber sheet expands until it fills the gap between the sheet and the covering material during vulcanization, so the thickness of the rubber foam must be regulated. Control the gap by taking this into account. If the outer sheathing material is a material that stretches easily to a certain extent and then exerts a large amount of tension, such as stockinette knitting, there is no need to create a gap between the rubber sheet and the stockinette cloth when covering. By controlling the extensibility of the knitted material, the thickness of the rubber foam can be controlled. If a hygroscopic fabric is layered on the innermost side of the glove shape, it will absorb sweat and the like when the glove is used, making it comfortable. The sheet of rubber compound and the breathable material are brought together by rubber foaming pressure. An adhesive can be applied to the jacket material and the innermost absorbent fabric, if desired, to improve adhesion between the laminated materials.

[Example 1] In order to facilitate the lamination work, a flat-handed type was used, and a 30-count cotton knitted glove was placed on it. Each of the formulations shown in Table 1 was kneaded with a roll and rolled to a thickness of 0.8 to 1 inch I. A rubber sheet was laminated over the entire surface of the knitted glove. Remove this from the open hand mold, cover it with a curved hand mold, let it fit into the mold, cover it with a No. 10 cotton knitted glove, and
Hot air vulcanization is carried out at 30° C. for 30 minutes. Since the rubber sheet is adhesively fixed to the inner knitted glove when heated, it foams outward and is integrated with the outer knitted glove, resulting in a glove having a rubber foam layer approximately 211 mm thick. combination t
When lh3 is used, it has no fluidity when heated, so it leaks from the outer knitted glove to the surface level, resulting in a glove with an anti-slip effect.

[Example 2] Foaming agent 1 A natural rubber latex compound containing a foaming aid, a vulcanizing agent, and other chemicals is prepared. Using this as a bath, apply the usual method of dipping to the surface of the curved hand shape to a thickness of about 1 dragon (after drying).
Apply a rubber layer. Table 1 (Note) Rubber 0: / T-320C: Product name of Mitsubishi Yuka's thermoplastic rubber (Hydrogenated SBS Pufufu Polymer) MBTS: Cybenzothiacylcisulfite TMTD
:Tetramethylthiuramcis sulfide village tln M-10
00: Hydration Kasei Kogyo's foaming agent trade name. K-5: Trade name of a foaming aid manufactured by Hydration Kasei Kogyo. After drying, cover with lO cotton knitted gloves and heat at 130℃.
Vulcanize in hot air for 30 minutes to obtain a glove with a rubber foam layer. (e) Effects of the invention The following effects of the invention are achieved. (1) When a sheet of heat-foamable unvulcanized rubber compound is used for all or part of the glove shape, and the sheet is foamed during heating, there is a hand mold inside the sheet that receives the rubber foaming pressure. , the sheet expands outward. The outside of the sheet is covered with a flexible and breathable covering material, such as a knitted glove, so that after the sheet has expanded by a predetermined amount, the tension of the covering material suppresses further expansion, and the rubber Regulating the foam to a predetermined thickness. At the same time, the growth of abnormally large bubbles is also regulated. Since the outer covering material has breathability, when the rubber sheet expands, the air between the rubber sheet and the outer covering material and the gas emitted from the rubber sheet can be easily exhausted, thereby improving the close contact between the rubber foam layer and the outer covering material. make things better. (2) Since the outer covering material is placed on the outside of the rubber foam layer, the foam layer is protected, and the outer covering material prevents wear and damage of the glove, and the rubber foam layer gives flexibility to the glove and protects it during use. Improves workability by providing a good fit and making it easier to grasp small objects. (3) Gloves with an anti-slip effect can be easily produced by causing the rubber compound to leak from the openings (stitches, etc.) of the jacket material to the surface using the rubber foaming pressure. The combination of these effects gives the glove surface strength and
It is possible to easily and efficiently manufacture gloves that are resistant to mechanical damage, are flexible, have fins, are non-slip, and have excellent workability.

Claims (6)

[Claims] (1) At least a portion of the glove shape is formed to have a structure consisting of a sheet of heat-foamable unvulcanized rubber compound and a flexible, breathable covering material (e.g., fibers) covering the outside thereof. A method for producing gloves, which comprises supporting the glove shape using the hand shape as a core, and regulating expansion of the rubber compound foamed during heat vulcanization by the tension of the outer covering material. (2) The rubber compound is natural rubber or/and synthetic rubber 9
2. A method for manufacturing gloves according to claim 1, comprising 0-50 parts by weight of rubber and 10-50 parts by weight of thermoplastic rubber. (3) The method for manufacturing gloves according to claim 1, wherein the sheet of the rubber compound is formed by a dipping method from rubber latex or a rubber solution mixed with a foaming agent. (4) The method for manufacturing a glove according to claim 1, 2, or 3, wherein a cloth is laminated on the inner surface of the glove shape. (5) The method for manufacturing a glove according to claim 1, 2, 3, or 4, wherein the outer cover material is a fabric such as a woven fabric or a nonwoven fabric, or a leather. (6) Claims 1, 2, and 3 in which the foamed rubber layer leaks out of the meshes (mesh, etc.) of the outer cover material due to the foaming pressure of the rubber compound during heat vulcanization; The method for manufacturing gloves according to item 4 or 5.