| 摘要 |
PURPOSE:To obtain the title film having excellent heat sealability, by mixing a polyolefin (co)polymer or an olefin/vinyl acetate copolymer with polymethylpentene and/or dibenzylidenesorbitol. CONSTITUTION:5-80 pts.wt. base polymer component (A) comprising a polyolefin (co)polymer mainly consisting of a 4C or lower olefin or an olefin/ vinyl acetate copolymer is mixed with 95-30 pts.wt. polymethylpentene (B) in a total of 100 pts.wt. Alternatively, 100 pts.wt. component A is mixed with 1.0-0.1 pt.wt. dibenzylidenesorbitol (C). Alternatively, 5-80 pts.wt. component (A) is mixed with 95-20 pts.wt. component (B) and 1.0-0.1 pt.wt., per 100 pts.wt. total of components (A), (B) and (C), component (C). All of the above mixtures are formed into unoriented films or uniaxially oriented films. |
