Closure cap with vapor impermeable lamina

Details Closure cap with vapor impermeable lamina Closure cap with vapor impermeable lamina

1987-02-26

1988-07-12

Norton, Donald F.

Bottles and jars

Closures

Including visual indicia

215316, B65D 4102

Patent

active

047564377

ABSTRACT:
Caps consisting of a closure panel and a cylindrical side wall that are relatively permeable to water vapor and/or oxygen are rendered less permeable by moulding into and permanently bonding to the inner face or, more usually, the outer face of the closure panel a relatively vapor impermeable lamina. The cap is made by a process in which a lamina is inserted into the cavity of a mould, usually an injection mould, and then the material for forming the cap is introduced into and mould in the cavity.

REFERENCES:
patent: 2072536 (1937-03-01), Trickey et al.
patent: 3270101 (1966-08-01), Jardine et al.
patent: 3960288 (1976-06-01), Phillips
patent: 4096946 (1978-06-01), Cook et al.
patent: 4126727 (1978-11-01), Kaminski
patent: 4151924 (1979-05-01), Jameson
patent: 4370368 (1983-01-01), Hirata et al.
patent: 4379117 (1983-04-01), Baird, Jr. et al.
patent: 4640428 (1987-02-01), Chang

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