Development of a New Laying Method for Narrow Tape of Thermoplastic Intermediate Material Using Machine Stitching

DOI Web Site 1 Citations 5 References
  • NISHIDA Hironori
    Western Region Industrial Research Center, Hiroshima Prefectural Technology Research Institute
  • MATSUBA Akira
    Eastern Region Industrial Research Center, Hiroshima Prefectural Technology Research Institute
  • KOUNO Yousuke
    Western Region Industrial Research Center, Hiroshima Prefectural Technology Research Institute
  • FUJII Toshio
    Western Region Industrial Research Center, Hiroshima Prefectural Technology Research Institute
  • YAMASHITA Hiroyuki
    Western Region Industrial Research Center, Hiroshima Prefectural Technology Research Institute
  • TAJIMA Ryo
    Tajima Industries LTD.
  • FUJIWARA Munenori
    Tajima Industries LTD.
  • OGIHARA Shinji
    Department of Mechanical Engineering, Tokyo University of Science

Bibliographic Information

Other Title
  • ミシンステッチを利用した細幅テープ熱可塑中間基材積層法の開発
  • —CF/PA6一方向積層板の作製と曲げ特性の評価—
  • —Fabrication of CF/PA6 Unidirectional Laminates and Evaluation of Its Flexural Properties—

Abstract

In this study, a new automatic tape laying (ATL) method for CFRTP intermediate material was developed by using machine stitching, which can be effective to reduce material waste and production costs in automotive manufacturing. Narrow CF/PA6 semipreg tapes were stacked and fixed onto a sheet of PA6 base film by a modified embroidery sewing machine. Subsequently unidirectional laminates were fabricated and flexural specimens without fiber break were cut out from the non-stinging region of the laminates. The flexural properties of this tape lay-up laminates were examined under three-point bending condition in comparison with those of a laminate laid up with conventional wide width semipreg sheets. As a result, it was found that there is no significant difference in the flexural properties for the fiber direction between the tape lay-up laminates without fiber break and the conventional sheet lay-up laminate under the same fiber volume fraction. However, the flexural modulus and strength showed relatively low values in the tape lay-up laminates due to the decline of the fiber volume fraction because of the use of subsidiary materials of PA6 such as the base film and stitching thread.

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