| 摘要 |
PURPOSE:To provide the subject film and sheet having excellent thermal sterilizability, heat-seal strength and releasability, and containing a specific butene-1 (co)polymer and an (un)modified high-density polyethylene at specific ratios. CONSTITUTION:The objective film and sheet can be produced by mixing (A) 8-49wt.%, preferably 12-15wt.% of a butene-1 (co)polymer having an average molecular weight of >=100,000, preferably 750,000-1,750,000, a density of preferably 0.917-0.919 and a melt index of preferably 0.1-225g/10min and (B) 92-51wt.%, preferably 88-85wt.% of an (un)modified high-density polyethylene having a density of >=0.941g/cc, preferably 0.945g/cc and a melt index of preferably 0.1-20g/10min with a twin-screw extruder, etc., and forming the obtained mixture by casting, etc. |
