B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 53/04 (2006.01) B29B 9/12 (2006.01) B29C 43/18 (2006.01) B29C 43/20 (2006.01) B29C 47/06 (2006.01) B29C 70/80 (2006.01) B65D 41/04 (2006.01) C09K 3/10 (2006.01)
Patent
CA 2256278
A plastic closure that comprises a cap having a base with a peripheral skirt defining the cap interior and threads on the skirt for securing the closure to a container. A liner is secured to the interior of the cap, preferably by being compression molded in situ on the base. The liner consists essentially of a multiplicity of alternating layers of a matrix polymer material such as EVA and a barrier material such as EVOH to resist transmission of gas, water vapor and/or flavorants through the liner. The matrix polymer material preferably is preblended with a compatibilizer material such as a maleic anhydride grafted polymer that ties the matrix polymer material to the barrier material.
Gowling Lafleur Henderson Llp
Owens-Illinois Closure Inc.
Rexam Closure Systems Inc.
LandOfFree
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