| 摘要 |
<p>PURPOSE: To provide an easy peeling sealant material which can be heated in the hot water, for example, after filling a deep drawn container, bag or the like with food such as roast pork and hamburg and vacuum-packing it with covering material, by using a plastic film packing material. CONSTITUTION: This composite multi-layer film is a composition whose sealing layer consists of crystalline polyamid resin (5-100% part weight) whose melting point is greater than 170 deg.C, polypropylene (10-160% part weight),(1)nd ethylene- methacrylic acid copolymer (10-50% part weight) to ionomer resin (100% part weight) of ethylene series where a part of ethylene-unsaturated carboxylic acid type copolymer is neutralized by metallic positive ions. In packing various food, it is thus possible to exhibit excellent heat resistance, oil resistance, transparency and easy peeling ability even after heating process in the hot water.</p> |
