Flexible container with valve

Details Flexible container with valve Flexible container with valve

1979-12-06

1982-04-27

Norton, Donald F.

Purses, wallets, and protective covers

Protective cover made of flaccid material

For a racquet

B65D 3024

Patent

active

043265740

ABSTRACT:
A flat, flexible, sterilizable container for a liquid to be maintained and extracted under sterile conditions, said container comprising: a body having walls formed by a three-layer laminate including an outermost layer of a propylene polymer, an innermost layer of a copolymer of ethylene with a small amount of butylene, and an intermediate layer of an amide polymer; and a valve carried by said body comprising an elastomeric core whose spaced major faces are covered, one, by a three-layer laminate similar to said body wall forming laminate and, the other, by a two-layer laminate including a first layer of a copolymer of ethylene with little butylene and a second layer of an amide polymer.

REFERENCES:
patent: 2704075 (1955-03-01), Cherkin
patent: 3642047 (1972-02-01), Waage

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