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METHOD FOR PRODUCING ONE-SIDED EMBEDDED FILM BASED ON PARTIALLY ACETHETAL POLYVINYL ALCOHOL AND ITS APPLICATION IN LAMINATE
METHOD FOR PRODUCING ONE-SIDED EMBEDDED FILM BASED ON PARTIALLY ACETHETAL POLYVINYL ALCOHOL AND ITS APPLICATION IN LAMINATE
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机译:基于部分乙缩醛聚乙烯醇的单面嵌入式膜的制备方法及其在层合物中的应用
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摘要
Process for producing a film based on partially acetalized polyvinyl alcohol comprises: providing a film based on partially acetalized polyvinyl alcohol, where a first and second sides of the files have a roughness of 1-30 mu m; and embossing the second side of the film between a roughened embossing roller at 80-170[deg]C and pressing roller at 0-60[deg]C to obtain a film with an embossed surface with a roughness of 20-100 mu m, where the pressing roller has a Shore A hardness of 50-80. An independent claim is included for a laminate comprising polymer films and at least two embossed films, where the polymer films are arranged between the non-embossed sides of the embossed films.
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