| 摘要 |
<p>PURPOSE:To enhance imperviousness to oils and fats by providing an intermediate layer of a propylene polymer and a paper layer on a poly-4-methyl-1-pentene layer to form a three-layer film or sheet. CONSTITUTION:An intermediate layer of a propylene polymer is provided on a layer of poly 4-methyl-1-pentene, and a layer of paper is provided on the intermediate layer to form a laminate film or sheet having at least three layers. The poly-4-methyl-1-pentene layer is preferably formed of a poly-4- methyl-1-pentene which has a melting point of 190 to 245 deg.C, and the intermediate layer is preferably formed of a polypropylene having an MFR of 1 to 200g/10min. Cartons formed of the laminate sheet thus obtained have excellent oil resistance, and are useful as cartons for oil- or fat-containing foodstuffs.</p> |
