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process for the production of a support for use in the training of film poliuretanici
process for the production of a support for use in the training of film poliuretanici
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机译:制作用于电影政治影片培训的支持的过程
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摘要
A process is dislosed for producing a support suitable for use in the formation of polyurethane films, the support comprising a base and a releasing layer on the base comprising a polymeric mixture of 95 to 65 parts by weight of polypropylene and 5 to 35 parts by weight of polyethylene, which process comprises extrusion coating the base with said mixture through a T-die to form the releasing layer on the base, the temperature of the mixture as extruded through the T-die being controlled below 300 DEG C.
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