Polymeric closure comprising foamed polyethylene or ethylene copolymer and a resilient compound
AssigneeAnthony Smith Australia Pty Ltd
InventorsJohn Martin Symons, William James McMahon
Life of this patent
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Abstract
A foamed closure for a container, wherein the closure consists essentially of (a) a major proportion of at least one material selected from the group consisting of polyethylene and copolymers of ethylene; and (b) a minor proportion of at least one resilient compound. The resilient compound is preferably selected from the group consisting of polyethylene, metallocene catalyzed polyolefins, ethylene vinyl acetate copolymers, styrene-butadiene-styrene copolymers or styrene-ethylene-butylene-styrene copolymers.
Claims25
A foamed closure for a container, wherein the closure consists essentially of a blend of one or more copolymers of ethylene and one or more metallocene catalyzed polyolefins, there being a major proportion of the ethylene copolymers and a minor proportion of the metallocene catalyzed polyolefins.
A composition for use in manufacturing a closure, wherein the composition consists essentially of a blend of one or more copolymers of ethylene, one or more metallocene catalyzed polyolefins, and a blowing agent, there being a major proportion of the ethylene copolymers and a minor proportion of the metallocene catalyzed polyolefins;
- wherein the ethylene copolymers are present in an amount of from about 60% to about 90% (by weight);
- and
- the metallocene catalyzed polyolefins are present in an amount of from about 10% to about 40% (by weight).
A foamed closure for a container, wherein the closure consists essentially of a blend of:
- (a) from about 60% to about 90% (by weight) of one or more copolymers of ethylene;
- and;
- (b) from about 10% to about 40% (by weight) of metallocene catalyzed polyethylene.
A foamed closure for a container, wherein the closure consists essentially of a blend of one or more copolymers of ethylene and one or more metallocene catalyzed polyolefins, there being a major proportion of the ethylene copolymers and a minor proportion of the metallocene catalyzed polyolefins;
- wherein the ethylene copolymers are present in an amount of from about 60% to about 90% (by weight);
- and
- the metallocene catalyzed polyolefins are present in an amount of from about 10% to about 40% (by weight).
Dependencies are inferred from the claim text.