| 摘要 |
<p>PURPOSE:To obtain a stretch packaging film capable of performing high stretching, possesses appropriate adhesion, does not have excessive stickiness and is superior in productivity, packaging properties and handling properties, by a method wherein the title film is composed of a film having specific linear low-density polyethylene for its base body. CONSTITUTION:The title film is of a stretch packaging film comprised of a film having linear low density polyethylene, whose melt flow rate (190 deg.C) is 0.3-8g/min., density is 0.900-0.918g/cm<3>, molecular weight distribution is 2-6, melting points due to a differential scanning calorimeter are two or more, maximum melting point is 118-125 deg.C, a ratio between a height of a peak of the maximum melting point and that of the next melting point is 1.3 or less, for its base body. Linear low-density polyethylene is of a copolymer, for example, of ethylene and alpha-olefin and ethylene/alpha-olefin copolymer is of an ethylene/alpha- olefin random copolymer having linear structure substantially, which is comprised of ethylene and 4-2 deg.C alpha-olefin. A film of 15-60mum thick is molded of the linear low-density polyethylene by adopting an inflation method or a T-die method.</p> |
