| 摘要 |
<p>The present invention relates to a multilayer film for manufacturing a pouch, said multilayer film comprising a contact layer, a core layer, and an outer layer, wherein the contact layer and the core layer are made integral with a first tie layer, and the outer layer and the core layer are made integral with a second tie layer, and: the contact layer comprises (A) a copolymer of ethylene andα-olefin having a density in the range of 0.870 g/cm3 to 0.910 g/cm3, alone or in mixture with (B) a polyolefin having a density in the range of 0.910 g/cm3 to 0.940g/cm3, the core layer comprises (C') a flex-crack resistant ethylene vinyl alcohol copolymer having a content of ethylene in the range of 25 to 48 mol %or a mixture of (C) an ethylene vinyl alcohol copolymer having a content of ethylene in the range of 25 to 48 mol % and (D) an ionomer acid ethylene copolymer, the outer layer comprises (E) a polyolefin having a density in the range of 0.910 g/cm3 to 0.940 g/cm3, alone or in mixture with (F) a copolymer of ethylene andα-olefinhaving a density in the range of 0.870g/cm3 to 0.910 g/cm3, the first tie layer and second tie layer comprise independently of each other (G) a copolymer of polyolefin grafted with a carboxylic acid or an anhydride of carboxylic acid, alone or in mixture with (H) a copolymer of polyolefin. The invention also relates to the process for manufacturing such a film, as well the single-use pouch manufactured from that film.</p> |
