PROPYLENE RESIN SHEET AND HEAT PROCESSING PACKAGING BODY USING SAME
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United States of America Patent
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Jul 11, 2013
app pub date -
Sep 15, 2011
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Sep 17, 2010
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Abstract
The invention discloses a propylene resin sheet and a heat-treatable packaging material which have an excellent transparency, flexibility and very-low-temperature impact resistance, and which reduce the thickness variation during lamination, suppress appearance defects such as interfacial roughness. A propylene resin sheet composed of at least one layer, the main layer being made up of a resin composition containing: (1) 50 to 90 wt % of a propylene resin composition (A) which includes from 30 to 70 wt % of a propylene-α-olefin random copolymer component (A1) having a melting peak temperature of 120 to 150° C., and from 70 to 30 wt % of a propylene-α-olefin random copolymer component (A2) having a C2 or C4-8 α-olefin content of at least 10 wt % but less than 20 wt %; and (2) 10 to 50 wt % of a specific ethylene-α-olefin copolymer (B).
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