| 摘要 |
<p>PURPOSE: To provide a heat-sealable biaxially stretched multilayered polyolefin film having excellent optical characteristics (low haze, high surface gloss), smoothly passing through a machine, providing closely bonded beautiful packing appearance free from undulation and wrinkles and having extremely good shrink characteristics. CONSTITUTION: A transparent co-extruded multilayered polyolefin film capable of being heat-sealed at low temp. includes a base layer and at least one upper layer provided on one side thereof and has a shrinkage factor of above 10%, pref., 15-35% in a longitudinal direction at 120 deg.C and a shrinkage factor of above 10%, pref., 15-35% in a lateral direction. This multilayered film has a shrinkage factor of at most 10%, pref., 8-3% in a longitudinal direction at 90 deg.C and a shrinkage factor of at most 10%, pref., 8-2% in a lateral direction. The upper layer has the lowest seal temp. of at most 124 deg.C, pref., 75-110 deg.C.</p> |
