01-03-2018 дата публикации
Номер: US20180056549A1
Evacuable, stable mold having a design obtained by thermal deformation at temperatures ≦ C. and corresponding to a fiber composite plastic component to be produced, consisting of an at least two-layered thermoplastic, vacuum-tight plastic film from a surface layer which is made of at least one thermoplastic polyamide or copolyimide, which has optionally functional groups, and a separating layer which form the inner side and is made of at least one thermoplastic fluorinated copolymer which has functional groups. 1. A stable evacuable mold with a shape obtained by thermoforming at temperatures ≦240° C. and corresponding to the respective fiber-composite plastics component to be produced therewith , and made of an at least two-layer vacuum-tight thermoplastic film comprisinga) a surface layer made of at least one thermoplastic polyamide or copolyamide which optionally has functional groups, andb) a release layer forming the internal side of the mold and made of at least one thermoplastic tetrafluoroethylene copolymer, which has functional groups, composed of γ) copolymerized units of monounsaturated aliphatic dicarboxylic acids or cyclic anhydrides thereof, and also', {'sub': 2', '1-10, 'sup': 1', '1, 'CF═CFOR, where Ris a Cperfluoroalkyl moiety which can comprise an oxygen atom,'}, 'δ) copolymerized units of at least one fluorinated monomer differing from tetrafluoroethylene, selected from the group consisting of'}], 'b1) α) copolymerized units of tetrafluoroethylene and'}{'sub': 2', '2', 'p', '2, 'CF═CF(CF)OCF═CF, where p is 1 or 2,'}{'sub': 2', '2', 'Q, 'sup': 3', '4', '3', '4, 'claim-text': {'sub': 2', '4, 'β) copolymerized units of C-Colefins, or'}, 'perfluoro (2-methylene-4-methyl-1,3 dioxolane) and CH═CX(CF)X, where Xis a hydrogen atom or a fluorine atom, Q is an integer from 2 to 10 and Xis a hydrogen atom or a fluorine atom, and/or'}b2) an olefin/tetrafluoroethylene copolymer which has been modified by free-radical grafting of from 0.01 to 5 mol % of carboxy ...
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