BUTENE-1 COPOLYMER TIE LAYER IN MULTILAYER FILM STRUCTURES HAVING A LOW SEAL TEMPERATURE AND IMPROVED HOT TACK

摘要

Multilayer film (BOPP) structure comprising at least :
A) a skin (outer) layer substantially consisting of a crystalline low seal Initiation temperature propylene copolymer;
B) a tie layer substantially consisting of a butene-1 copolymer having flexural modulus (MEF) of 75 MPa or less;
C) a core layer substantially consisting of one or more polypropylene homopolymers designed for BOPP.