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.


    Access

    Download


    Export, share and cite



    Title :

    POLYVINYL ACETAL RESIN FILM AND FILM ROLL THEREOF, AND LAYERED PRODUCT


    Additional title:

    POLYVINYLACETALHARZFILM UND FOLIENROLLE DAVON SOWIE SCHICHTPRODUKT
    FILM DE RÉSINE D'ACÉTAL POLYVINYLIQUE ET SON ROULEAU DE FILM, ET PRODUIT EN COUCHES


    Contributors:

    Publication date :

    2022-07-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    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



    POLYVINYL ACETAL RESIN FILM AND FILM ROLL THEREOF, AND LAYERED PRODUCT

    ASANUMA YOSHIAKI / ISOUE KOICHIRO | European Patent Office | 2020

    Free access

    POLYVINYL ACETAL RESIN FILM FOR LAMINATED GLASS

    ISOUE KOICHIRO / YASUDA HIROTAKA / KOISHIKAWA JUN et al. | European Patent Office | 2018

    Free access

    POLYVINYL ACETAL RESIN FILM FOR LAMINATED GLASS

    ISOUE KOICHIRO / YASUDA HIROTAKA / KOISHIKAWA JUN et al. | European Patent Office | 2020

    Free access

    POLYVINYL ACETAL RESIN FILM, AND LAMINATE INCLUDING SAME

    SHIMAZUMI YUHI / KUSUDOU TAKESHI / ISOUE KOICHIRO et al. | European Patent Office | 2020

    Free access

    POLYVINYL ACETAL RESIN FILM, AND LAMINATE INCLUDING SAME

    SHIMAZUMI YUHI / KUSUDOU TAKESHI / ISOUE KOICHIRO et al. | European Patent Office | 2022

    Free access