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multilechos coextruded thermoplastic structures and flexible, comprising a bed of polymer of vinylidene chloride and a bed of polymer of vinyl chloride and its use for the manufacture of packaging.
multilechos coextruded thermoplastic structures and flexible, comprising a bed of polymer of vinylidene chloride and a bed of polymer of vinyl chloride and its use for the manufacture of packaging.
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机译:多油菜共挤出热塑性结构和柔性,包括偏二氯乙烯聚合物床和氯乙烯聚合物床及其在包装生产中的用途。
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摘要
1. Flexible thermoplastic structures with multiple coextruded polymeric layers comprising a vinylidene chloride copolymer layer bonded to a plasticized vinyl chloride polymer layer, characterized in that the vinylidene chloride copolymer layer is bonded to the plasticized vinyl chloride polymer layer through the intermediacy of a mixture of polymeric adhesives consisting of 10 to 90 parts by weight of a copolymer of vinyl acetate and ethylene and of 90 to 10 parts by weight of a copolymer of vinyl chloride and vinyl acetate and whose shear elastic modulus G' at 121 degrees C and 10**-4 cycles/second is greater than 0.5 10**3 Pa.
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