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Movie film of polyethylene polyethylene film multilayer film multilayer bag containing a fluid material and process for making bags filled with material fluível
Movie film of polyethylene polyethylene film multilayer film multilayer bag containing a fluid material and process for making bags filled with material fluível
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机译:包含流体材料的聚乙烯的聚乙烯薄膜多层薄膜多层袋的薄膜和用于制造填充有材料的袋的方法
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PCT No. PCT/CA95/00064 Sec. 371 Date Sep. 19, 1996 Sec. 102(e) Date Sep. 19, 1996 PCT Filed Feb. 8, 1995 PCT Pub. No. WO95/21743 PCT Pub. Date Aug. 17, 1995A multilayer film and a pouch containing a flowable material are disclosed. The multilayer film is made from two layers of a sealant film with an interposed layer of a polyethylene. The sealant film is made from a material comprising 10 to 100 parts by weight of a copolymer of ethylene and at least one C4-C10 alpha-olefin manufactured in a polymerization process using a single-site polymerization catalyst and from 0 to 90 parts by weight of at least one polymer selected from the group consisting of a linear copolymer of ethylene and at least one C4-C10 alpha-olephin having a density of from 0.900 to 0.930 g/cm3 and a melt index of from 0.3 to 2.0 dg/min, a high-pressure polyethylene having a density of from 0.916 to 0.930 g/cm3 and a melt index of from about 1 to 10 dg/min, and blends thereof. The polyethylene of the interposed layer is a high density polyethylene with a density of at least 0.930 g/cm3 and a melt index of less than dg/min. The pouch is made from the multilayer film and has transversely sealed ends. The pouches are particularly useful in the packaging of flowable materials e.g. milk, especially using a vertical form, fill and seal apparatus.
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