B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
154/140, 18/683
B29C 47/06 (2006.01) B29C 55/02 (2006.01) B32B 5/32 (2006.01) B32B 27/08 (2006.01)
Patent
CA 2033274
1. An opaque, biaxially oriented polymeric film structure comprising: (a) a core layer, having a first surface and a second surface, comprising a thermoplastic polymeric matrix within which is located a stratum of voids; a substantial number of the voids containing at least one spherical, void-initiating particle which is phase distinct and incompatible with matrix material, the population of voids in the core being such as to cause a significant degree of opacity; and (b) at least one skin layer, adhering to at least the first surface of the core layer, comprising a thermoplastic polymeric matrix within which is located a stratum of voids, a substantial number of said voids containing at least one void-initiating solid particle which is phase distinct and incompatible with the matrix material.
Swan Larry Gene
Wood Ronald Clark Jr.
Gowling Lafleur Henderson Llp
Mobil Oil Corporation
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