| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-shrinkable film with an excellent heat-sealing property and an environmental sanitation property by having a good adaptability to a packaging machine with high thickness accuracy, combining a superior low temperature shrinkable property and high temperature heat-resistivity, and no lowering of strength by an environmental temperature. SOLUTION: This film has both outer layers consisting of PP resin in a peak temperature 135-145 deg.C of fusion showing the maximum heat absorption rate measured by DSC, and an intermediate layer is sandwiched, which consists of L-LDPE resin having a density of 0.895-0.915 g/cm<3> , MFR 0.8-3.0, one of a crystal fusion peak measure by DSC and a temperature width in the range of 12 deg.C from the fusion peak to the completion of overall crystal fusion, a temperature width of 30 deg.C or below from 100 wt.% elusion to the completion of 100 wt.% elusion by a cross fractional method, and being 1.5-3.5 in a weight average molecular weight/number average molecular weight. |
