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    • 6. 发明授权
    • Method of producing films by means of coextrusion blow-moulding
    • 通过共挤吹塑法生产薄膜的方法
    • US08377354B2
    • 2013-02-19
    • US10493126
    • 2002-10-11
    • David SilagyGérard ReignierPhilippe Bussi
    • David SilagyGérard ReignierPhilippe Bussi
    • B32B25/16B29C47/06B29C47/88
    • B29C47/0023B29C47/0004B29C47/0021B29C47/0026B29C47/065B29C47/26B29C47/8835B29K2027/16
    • The invention relates to a method of producing a film comprising at least one layer of a thermoplastic fluoro-polymer and at least one layer of another polymer (A). The inventive method consists in using extrusion blow molding to coextrude a fluoro-polymer and polymer (A) which adhere to one another; with a layer of another thermoplastic polymer (B) such that it forms a layer which is adjacent to the fluoropolymer/polymer (A) layer According to the invention, the thermoplastic polymer (B) is incompatible with the fluoro-polymer and polymer (A) and has adequate extrudate behavior to support the layers of fluoro-polymer and/or polymer (A). Once the coextrudate has been cooled, by separating the layer(s) of (B), at least the film is recovered, said film comprising at least one layer of a polymer selected from among thermoplastic fluoro-polymers and polymers (A).
    • 本发明涉及一种制备包含至少一层热塑性氟聚合物和至少一层另一种聚合物(A)的薄膜的方法。 本发明的方法在于使用挤出吹塑来共挤出氟聚合物和彼此粘附的聚合物(A); 具有另一种热塑性聚合物(B)的层,使得其形成与氟聚合物/聚合物(A)层相邻的层。根据本发明,热塑性聚合物(B)与氟聚合物和聚合物(A)不相容 )并且具有足够的挤出物行为以支撑氟聚合物和/或聚合物(A)的层。 一旦共挤出物冷却,通过分离(B)的层,至少回收膜,所述膜包含至少一层选自热塑性氟聚合物和聚合物(A)的聚合物。