Closure assembly and method of making same using epoxidized natu

Details Closure assembly and method of making same using epoxidized natu Closure assembly and method of making same using epoxidized natu

1988-06-10

1990-08-21

Marcus, Stephen

Bottles and jars

Closures

Cap type

215348, 215352, B65D 5306

Patent

active

049498592

ABSTRACT:
A vinyl chloride copolymer foam plastisol with an epoxidized natural oil plasticizer such as epoxidized soybean oil and a blowing agent, the plastisol having a long shelf life and the plastisol easily being applied as a liner to the underside of a closure top and fused, without preheating, at a relatively low temperature of about 300.degree. C. for a short time of about 90 to 120 seconds to form a foam liner, the solidified foam plastisol having resilience, good tensile and elongation properties to thereby provide a stable gasket assembly.

REFERENCES:
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patent: 3245566 (1966-04-01), Szalay
patent: 3265785 (1966-08-01), Rainer
patent: 3283936 (1966-11-01), Kehe et al.
patent: 3344093 (1967-09-01), Strickman
patent: 3411649 (1968-11-01), Mumford
patent: 3574147 (1971-04-01), Giessler et al.
patent: 3607362 (1971-09-01), Cormack, Jr.
patent: 3612326 (1971-10-01), Marks
patent: 4097558 (1978-06-01), Kuhn
patent: 4278718 (1981-07-01), Billings et al.
patent: 4392581 (1983-07-01), Itsubo et al.

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