发明名称 Thick shrink film having high oxygen transmission rate
摘要 <p>A multilayer film is relatively thick has an oxygen transmission rate of at least 10,000 cc/mil/24 hour@STP. The film is particularly suited for the packaging of fresh seafood. The film has a first layer which is an outer film layer which serves as a heat seal layer, and a second layer which serves as a high O<SUB>2</SUB>-transmission layer. The first layer has a thickness of from 2 to 20 percent of a total thickness of the multilayer film. The second layer comprises at least one member selected from the group consisting of: (i) ethylene/butyl acrylate copolymer, (ii) homogeneous ethylene/alpha-olefin copolymer having a density of from 0.86 to 0.91 g/cc; (iii) heterogeneous ethylene/alpha-olefin copolymer having a density of from 0.89 to 0.91 g/cc; (iv) ethylene/methyl acrylate copolymer having a methyl acrylate mer content of from 20 to 24 mole percent; (v) ethylene/vinyl acetate copolymer having a vinyl acetate mer content of from 10 to 30 mole percent; and (vi) styrene butadiene block copolymer. The at least one second layer having a thickness of from 80 to 98 percent of the total thickness of the multilayer film. The film is at least 1.5 mils thick. The invention also pertains to a bag made from the film, as well as a packaged product utilizing the film.</p>
申请公布号 AU2004217906(B9) 申请公布日期 2009.02.19
申请号 AU20040217906 申请日期 2004.03.05
申请人 CRYOVAC, INC. 发明人 DANIEL S. WILBURN;CLIFFORD A. KENDRICK
分类号 B32B27/32;B32B27/08;B32B27/30;B65D65/40;F16B4/00 主分类号 B32B27/32
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