Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1989-06-01
1991-03-19
Seidleck, James
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
215224, 215243, 215347, 215348, 4283186, 4283199, 428213, 428220, 428458, 428516, B65D 5304, B32B 326
Patent
active
050009923
ABSTRACT:
A plastic container closure, such as a bottle cap liner or tamper evident seal, is formed from a coextruded multilayer foamed film. The coextruded multilayer foamed film has at least one solid film layer of a first polyolefin blend containing linear low density polyethylene, low density polyethylene, and, optionally high density polyethylene, and at least one foamed layer of a second polyolefin blend containing linear low density polyethylene, low density polyethylene, and optionally ethylene vinyl acetate. The multilayer foamed film may be coextruded using a blown film or cast film extrusion process under defined conditions. the coextruded multilayer foamed film may be laminated to other materials such as polyester film, thermoplastic adhesive films or metallic films and used as a plastic container closure, or may be applied as a liner to a plastic bottle cap.
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"All You Need to Know About Cap Liners", Tri-Seal International Inc. brochure.
Seidleck James
The Dow Chemical Company
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