KP Sheet is a stampable sheet made of glass fiber (GF) and polypropylene (PP), and has a distinctive characteristic of expansion in thickness. To realize light weight and high stiffness in automotive headliners, the GF content and arrangement in the thickness direction were studied with the aim of increasing expansivity. Although expansivity increases with GF content and the elastic slope is enhanced by the resulting increase in sheet thickness, the maximum elastic slope reaches saturation at a GF content of 50 mass% or more. Therefore, the GF arrangement in the thickness direction is controlled to improve GF spring back, resulting in a 30% improvement in expansivity at the same unit weight. A newly-developed ultra-light product (UL grade) realizes a high elastic slope of 7.2 N/mm at a web unit weight of 800 g/m2, while also displaying excellent moldability and dimensional stability equal to those of normal grade KP Sheet, enabling further weight reduction. (Engl. translation from JFE GIHO, 2004, No.4, p.77-82, (jap.))


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Composite material for automative headliners - Expandable stampable sheet with light weight and high stiffnesss


    Additional title:

    Verbundwerkstoffe für Fahrzeug-Headliner - streckbares, stanzbares und leichtes Blech mit hoher Steifigkeit


    Contributors:

    Published in:

    Publication date :

    2004


    Size :

    7 Seiten, 10 Bilder, 5 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    The growth of stampable thermoplastic sheet in automotive applications.

    Hale,E.H. / Butler Metal Products | Automotive engineering | 1975


    Structural Performance and Weight Reduction of Steel, Aluminum and Stampable Sheet for Bumper Beams

    Hamano, Hidemitsu / Suzuki, Koji / Mori, Takao | SAE Technical Papers | 1994


    Structural Performance and Weight Reduction of Steel, Aluminum and Stampable Sheet for Bumper Beams

    Mori, T. / Hamano, H. / Suzuki, K. et al. | British Library Conference Proceedings | 1994


    The Growth of Stampable Thermoplastic Sheet in Automotive Applications

    Hale, Clifford E. | SAE Technical Papers | 1975


    Structural performance and weight reduction of steel, aluminum and stampable sheet for bumper beams

    Mori,T. / Hamono,H. / Suzuki,K. et al. | Automotive engineering | 1994