| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a coextruded multilayered film which exhibits less shrinkage or melting of a sealed part heat-sealed at a high temperature in comparison with a conventional CPP film for pillow packaging, simultaneously has easily openable properties, is excellent in transparency, and has a good mar resistance. <P>SOLUTION: The coextruded multilayered film is made by laminating a surface resin layer (A) comprising a propylene resin (a) with a melting point of≥150°C, an intermediate resin layer (B) comprising an ethylene resin (b) with a density of 0.880-0.930 g/cm<SP>3</SP>, and a heat seal resin layer (C) comprising a propylene resin (c) with a melting point of≤145°C in this order. In this coextruded multilayered film, a total thickness of the intermediate resin layer (B) and the heat seal resin layer (C) is 2-20μm, and the thickness ratio to the total thickness of the surface resin layer (A), the intermediate resin layer (B) and the heat seal resin layer (C) is 5-30%. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
