LAMINATED STRETCH SHRINK FILM

摘要

PROBLEM TO BE SOLVED: To sufficiently heat seal a various tray shapes by mixing specific wt.% of nonionic surfactant composition in one or more layers, and orienting it. SOLUTION: A laminated film having a surface layer of a mixture obtained by mixing polyethylene resin (A) such as low-density polyethylene and low crystalline ethylene-α-olefin copolymer (B) having a density of 0.860 to 0.900 g/cm<3> and a melt index of 0.1 to 20 g/10 min at a melt peak temperature of 50 to 100 deg.C by amorphous or differential scanning calorimeter by weight indicated by a formula of 0<=(B)/A+B)<=0.7 and a core layer containing as a main component a mixture obtained by mixing polypropylene flexible resin (C) of a mixture of 5 to 50 wt.% of atactic polypropylene and 50 to 95 wt.% of crystalline isoatactic polypropylene and polybutene-1 (D) by weight indicated by a formula of 0.10<=(C)/(D)<=9.0 is obtained. This one or more layers is mixed with 0.1 to 4.0 wt.% of nonionic surfactant composition, and laterally and longitudinally oriented by twice or more.