Plastic closure with compression molded barrier liner

Details Plastic closure with compression molded barrier liner Plastic closure with compression molded barrier liner

B - Operations, Transporting

65

D

B65D 53/06 (2006.01) B29C 43/00 (2006.01) B29C 43/18 (2006.01) B65D 41/04 (2006.01) C09K 3/10 (2006.01)

Patent

CA 2256635

A plastic closure that includes a cap having a base with a peripheral skirt defining a 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 compression molding in situ. The liner consists essentially of a blend of a matrix polymer, a particulate barrier polymer and a compatibilizer. The heat and pressure of compression forms the particles of barrier polymer into platelets that are oriented essentially parallel to the plane of the disk.

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