# US 5,326,515 A · Methods of manufacturing gloves

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- Number: US 5,326,515 A
- Document ID: US5326515A
- Status: Granted
- Kind: A
- Application number: 08/017,398
- Filed: 1993-02-12
- Granted: 1994-07-05
- Earliest claimed: 1991-04-30
- Assignees: Sumitomo Rubber Industries, Ltd.
- Inventors: Toshiaki Sakaki; Daijiro Toji
- Web page: https://patentgrep.com/patent/US5326515A

## CPC

- B29C 41/22: Making multilayered or multicoloured articles
- B29C 41/14: Dipping a core {(B29C41/10 takes precedence)}
- A41D 19/0065: {with a textile layer underneath}
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES

## Abstract

The glove according to the present invention has, at least partially, a laminated part 2 in which a plurality of different types of rubbers are successively laminated. In the laminated part 2, the lowermost layer is a natural rubber layer, and the top surface layer is all oil-resistant rubber layer (for example, an acrylonitrile-butadiene rubber layer). The glove manufacturing method according to the present invention comprises the steps of immersing a glove mold in natural rubber latex containing a heat-sensitive coagulant to form a coating of the lowermost layer on the mold surface, and immersing at least a part of the lowermost layer in another rubber latex different from the first-mentioned rubber latex. The glove of the present invention has high strength and is economical and excellent in oil resistance and solvent resistance.

## Claims

### Claim 1

A glove manufacturing method comprising the steps of:
immersing a heated glove mold in natural rubber latex, said natural rubber latex comprising a heat-sensitive coagulant, thereby to form a first layer on the surface of said mold; and
immersing at least a part of said first layer in a second rubber latex different from said natural rubber latex before said first layer has fully dried, such that said first layer contains water when said first layer is immersed in said second rubber latex, thereby to laminate, on the surface of said first layer, a second layer different from said first layer, such that the first layer is in contact with the second layer.

### Claim 2 (depends on 1)

A manufacturing method according to claim 1, wherein the water content of said second rubber latex is in a range from 30 to 70% by weight.

### Claim 3

A glove manufacturing method comprising the steps of:
immersing a heated glove mold with a glove body of a knitted, woven or unwoven fabric mounted thereon, in natural rubber latex, said natural rubber latex comprising a heat-sensitive coagulant, thereby to form a first layer on the surface of said mold; and
immersing at least a part of said first layer in a second rubber latex different from said natural rubber latex before said first layer has fully dried, such that said first layer contains water when said first layer is immersed in said second rubber latex, thereby to laminate, on the surface of said first layer, a second layer different from said first layer, such that the first layer is in contact with the second layer.

### Claim 4 (depends on 1)

A manufacturing method as recited in claim 1, further comprising at least one additional immersing step, whereby at least one additional layer is laminated on at least a portion of said glove.