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