Stock material or miscellaneous articles – Composite – Of addition polymer from unsaturated monomers
Patent
1997-01-16
1999-11-23
Thibodeau, Paul
Stock material or miscellaneous articles
Composite
Of addition polymer from unsaturated monomers
B32B 2732
Patent
active
059897252
ABSTRACT:
A polymeric multilayer film is disclosed that has improved optical qualities while having structural qualities that are not significantly compromised. The film is composed of outer film layers of a low polydispersity polymer which are placed around at least one inner film layer of a high molecular weight high density polyethylene (HDPE) polymer. The outer film layer polymer has a polydispersity of from about 1 to about 4. In a preferred embodiment this low polydispersity polymer is formed in the presence of a metallocene catalyst. The inner film layer high molecular weight HDPE polymer has a melt index of less than 0.1 and a density of at least about 0.940 g/cm.sup.3. Any of the layers of the film may be constructed of polymer blends.
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Bullard Edward M.
White Thomas A.
Tarazano D. Lawrence
Tenneco Packaging
Thibodeau Paul
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