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US 5,492,767 AGranted
Laminated resin film
AssigneeMitsubishi Chemical Corporation
InventorsTakao Yazaki, Masataka Noro, Takashi Matsui, Noriyuki Kobayashi, Mie Toyoda
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AssigneeMitsubishi Chemical Corporation
InventorsTakao Yazaki, Masataka Noro, Takashi Matsui, Noriyuki Kobayashi, Mie Toyoda
Estimating the term…
A laminated resin film having a thickness of from 7 to 25 .mu.m comprised of (A) a poly(4-methylpentene-1) resin layer having a thickness of from 1 to 10 .mu.m having laminated on one or both sides thereof (B) a crystalline propylene copolymer resin layer comprising from 1 to 10% by weight of ethylene, from 74 to 96% by weight of propylene, and from 3 to 25% by weight of an .alpha.-olefin containing from 4 to 8 carbon atoms and having a thickness of from 2 to 20 .mu.m, provided that the total thickness of layers (B) when provided on each side of layer (A) is in the range of from 4 to 20 .mu.m. The laminated film has excellent cutting properties and high heat resistance sufficient for use in microwave cooking.
A laminated resin film for food wrap having a thickness of from 7 to 25 .mu.m consisting essentially of (A) a poly(4-methylpentene-1) resin layer having a thickness of from 1 to 10 .mu.m having laminated on both sides thereof (B) a crystalline propylene copolymer resin layer comprising from 1 to 10% by weight of ethylene, from 74 to 96 % by weight of propylene, and from 3 to 25 % by weight of an .alpha.-olefin containing from 4 to 8 carbon atoms and having a thickness of from 2 to 20 .mu.m, the total thickness of layers (B) is in the range of from 4 to 20 .mu.m.
Dependencies are inferred from the claim text.