| 摘要 |
PURPOSE:To provide a heat-shrinkable packaging film with gas barrier properties, which has good orientation processability and high-speed automatic packaging suitability, that a polypropylene-based heat-shrinkable film has, and from which a packaging material having heat shrinkability at a low temperature and high impact strengths at the time of heat shrinkage packaging can be obtained. CONSTITUTION:Both outer layers made of a polypropylene resin are provided on both sides of a core layer made of an ethylene-vinyl alcohol copolymer via an adhesive resin layer made of a modified ethylene copolymer to which an unsaturated carboxylic acid or its derivatives are copolymerized, or an unsaturated ethylene-alpha-olefin copolymer to which an unsaturated carboxylic acid or its derivatives are copolymerized, or, further, a mixture of these copolymers. |
