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Priority to JP1987075265UpriorityCriticalpatent/JPH051393Y2/ja
Publication of JPS63184723UpublicationCriticalpatent/JPS63184723U/ja
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Publication of JPH051393Y2publicationCriticalpatent/JPH051393Y2/ja
Heat sealable packaging film comprising propylene polymer substrate and olefin surface layer blend of polybutene-1 and an ethylene or a propylene copolymer