COMPOSITION COMPRISING BOTH POLYOLEFIN AND LOW MELTING POINT POLYAMIDE AS BASIC INGREDIENTS

摘要

PROBLEM TO BE SOLVED: To provide barrier film capable of being produced by tubular extrusion blowing at a sufficiently low temperature applicable to a thermosensitive polymer layer, having a monolayer or multilayer structure containing at least one layer made of an alloy of a low melting point polyamide with a polyolefin and improved in tear strength. SOLUTION: In a composition comprising (A) polyamide matrix and (B) polyolefin dispersed phase, this composition features that the polyamide has a melting point lower than that of polyamide 6, (preferably is polyamide 6-12 or polyamide 6-6/6) and the dispersed phase is composed of at least one of polyolefins selected from the group consisting of (B1) a functionalized polyolefin and (B2) a polyolefin which is not functionalized.