本发明涉及一种聚乙烯醇缩醛树脂薄膜,其由聚乙烯醇缩醛树脂材料构成,所述聚乙烯醇缩醛树脂薄膜的厚度为5~350μm,将一个面与另一个面相比,将表面较粗糙的面A的十点平均粗糙度的平均值设为Rz1(a)μm、较平滑的面B的十点平均粗糙度的平均值设为Rz2(a)μm时,满足式(1)和式(2):Rz1(a)>1.1×Rz2(a)(1)3>Rz2(a)(2),且面A的十点平均粗糙度的标准偏差除以Rz1(a)而得到的值和面B的十点平均粗糙度的标准偏差除以Rz2(a)而得到的值分别为0~0.30,前述聚乙烯醇缩醛树脂材料中的聚乙烯醇缩醛树脂的、使用Brookfield型(B型)粘度计以20℃、30rpm测得的、浓度10质量%的甲苯/乙醇=1/1(质量比)溶液的粘度为100~1000mPa·s,聚乙烯醇缩醛树脂薄膜中的增塑剂的量基于聚乙烯醇缩醛树脂薄膜的总质量为0~20质量%。

    The present invention relates to a polyvinyl acetal resin film, comprising a polyvinyl acetal resin material, whereinthe polyvinyl acetal resin film has a thickness of 5 to 350 µm, and satisfies the following Formulae (1) and (2) where, comparing one surface and the other surface, a mean value of the 10-point average roughness of a rougher surface A and a mean value of the 10-point average roughness of a smoother surface B are defined as Rz1(a) µm and Rz2(a) µm, respectively: Rz1a>1.1×Rz2a3>Rz2a a value obtained by dividing the standard deviation of the 10-point average roughness of the surface A by Rz1(a) and a value obtained by dividing the standard deviation of the 10-point average roughness of the surface B by Rz2(a) are each 0 to 0.30,a viscosity of a toluene/ethanol (1:1, mass ratio) solution containing 10%-by-mass of a polyvinyl acetal resin contained in the polyvinyl acetal resin material, which is measured at 20°C and 30 rpm using a Brookfield-type (B-type) viscometer, is 100 to 1,000 mPa·s, andthe amount of a plasticizer in the polyvinyl acetal resin film is 0 to 20% by mass based on a total mass of the polyvinyl acetal resin film.


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    Title :

    聚乙烯醇缩醛树脂薄膜和其薄膜卷以及层叠体


    Publication date :

    2023-07-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    C08J Verarbeitung , WORKING-UP / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / C03C Chemische Zusammensetzungen für Gläser, Glasuren oder Emails , CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen