Rubber stopper for tight sealing

Details Rubber stopper for tight sealing Rubber stopper for tight sealing

1980-07-10

1982-03-23

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of fluorinated addition polymer from unsaturated monomers

215364, 220307, 220DIG19, 428422, 428492, 428521, B32B 2730, B65D 3900

Patent

active

043213065

ABSTRACT:
To eliminate contamination of foreign matters deposited on the surface for a rubber stopper for tight sealing for medical purpose as for tight sealing of a medical injection liquid bottle, a vulcanized film of propylene-tetrafluoroethylene-glycidyl vinyl ether copolymer rubber is coated partially or wholly onto the surface of the rubber stopper. Vulcanization of the copolymer rubber can be carried out only by heating in the absence of a vulcanizing agent, and a vulcanized film with a good adhesiveness to the rubber stopper and a good sliding characteristic can be formed thereon.

REFERENCES:
patent: 3578037 (1971-05-01), Flynn
patent: 3628681 (1971-12-01), Schwartz
patent: 3760969 (1973-09-01), Shimatmoto
patent: 4151342 (1979-04-01), Uchino

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