Olefin packaging laminate
AssigneeToyo Baseki Kabushiki Kaisha
InventorsTsutomu Isaka, Saburoh Kumada
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Abstract
A heat sealable packaging material comprising (A) a stretched base layer formed of a propylene polymer and (B) a stretched surface layer formed of a blend of a propylene-ethylene copolymer and a C.sub.4 -C.sub.10 .alpha.-olefin-propylene copolymer in a weight proportion of 20:80 to 94:6 by weight on at least one surface of said base layer.
Claims19
A heat sealable material comprising (A) a stretched base layer comprising a propylene polymer and (B) on at least one surface of said base layer a stretched surface layer comprising a blend of a propylene-ethylene copolymer and a C.sub.4 -C.sub.10 .alpha.-olefin-propylene copolymer comprising units of C.sub.4 -C.sub.10 .alpha.-olefin and units of propylene in a weight proportion of 30:70 to 5:95, said blend being present in a weight proportion of 20:80 to 94:6 by weight.
Dependencies are inferred from the claim text.