POLYOLEFIN-BASED WRAPPING STRETCH FILM

摘要

PROBLEM TO BE SOLVED: To provide a polyolefin-based wrapping stretch film which is suitable for stretch wrapping for food and has transparency, sealing properties, tackiness and flexibility. SOLUTION: The polyolefin-based wrapping stretch film has structure of at least three layers consisting of a substrate layer and both surface layers. Both surface layers are constituted of composition consisting of (a) 95-45wt.% ethylene-α-olefin copolymer having 0.890-0.930g/cm<3> density and of (b) 5-55wt.% ethylene-α-olefin copolymer which has 0.860-0.880g/cm<3> density and has 1.0-2.5 weight-average molecular weight (Mw)/number average molecular weight (Mn) and is polymerized by suitably using a single site catalyst. The substrate layer consists of a propylene-based polymer.