| 摘要 |
<p>PURPOSE: To enhance bonding and shrink characteristics, optical properties, mechanical properties and sealability by forming a base material layer containing a propylene homopolymer, a hydrogenated hydrocarbon resin and random ethylene-propylene copolymer and providing upper layers on both surfaces of the base material layer. CONSTITUTION: A base material layer contains 5-40 wt.% propylene homopolymer, 0-30 wt.% hydrogenated hydrocarbon resin having a softening point of 80-125 deg.C, and 30-95 wt.% random ethylene/propylene copolymer. The propylene homopolymer is formed from isotactic polypropylene containing 15 wt.% or less n-heptane soluble fraction and the hydrocarbon resin is formed from resin forming compds such as styrene, methylstyrene or the like. The random ethylene/propylene copolymer has an m.p. of 125-145 deg.C and melting enthalpy of 60-90 J/g. The upper layer of a shrinkable film is formed from anα-olefin polymer. By this constitution, a transparent multilayered film for an overall label is obtained.</p> |
