MULTILAYER POLYOLEFIN FILM FOR USE IN PAPER CONTAINER FOR LIQUIDS, MATERIAL FOR USE IN PAPER CONTAINER FOR LIQUIDS COMPRISING THE SAME, AND PAPER CONTAINER FOR LIQUIDS USING THE SAME

摘要

The present invention provides a multilayer polyolefin film having a specific layered configuration that does not change the flavor or taste of contents when used as a sealant layer for the innermost surfaces of a liquid-storing paper container, and also a liquid-storing paper container material and a liquid-storing paper container that use this film. The invention has the following characteristic configuration: A multilayer polyolefin film for a liquid-storing paper container composed at least of one surface layer ( a layer), another surface layer ( c layer), and a middle layer ( b layer); a multilayer polyolefin film for a liquid-storing paper container wherein the a layer, the b layer, and the c layer have the characteristics described below; and a liquid-storing paper container material and liquid-storing paper container that use this film. a layer: a layer composed of one or a mixture of the following: a propylene homopolymer, a propylene-based copolymer, and a ethylene-±-olefin copolymer b layer: a layer composed of a propylene-based copolymer and an ethylene-±-olefin copolymer c layer: a layer composed of an ethylene-±-olefin copolymer, having a melting point of 60 to 140°C and a thickness of 1 to 20 µ m