| 摘要 |
<p>PURPOSE:To provide excellent flexibility and transparency and to enhance sanitary properties and heat resistance by forming a film or sheet composed of an ethylenic polymer having specific characteristics based on ethylene. CONSTITUTION:This bag is formed of a film or sheet composed of an ethylenic polymer based on ethylene and has density of 0.920g/cm<3> or less and contains a 15-80wt.% of low density polyethylene having m.p. of 117 deg.C or less measured by a differential scanning calolimeter and has a heat shrinkage factor of 20% or less in the MD direction thereof at 120 deg.C. The film or sheet is formed from at least two layers substantially consisting of low density polyethylene and an ethylene/1-olefine copolymer. Low density polyethylene usually has density of 0.930g/cm<2> or less and pref. has 0.920g/cm<3> or more in view of the aspect of a sterilizing temp. condition.</p> |
