射出成形品上のフローマーク発現機構の伝熱工学的検討 Investigation of the Mechanism Dominating the Flow Mark Generation in Polymer Injection Molding from a Thermal Engineering Viewpoint

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著者

    • 佐藤 勲 TREDOUX Louis
    • 東京工業大学 工学部 機械知能システム学科 Department of Mechanical and Intelligent Systems Engi-neering, Tokyo Institute of Technology
    • 佐藤 勲 SATOH Isao
    • 東京工業大学 工学部 機械知能システム学科 Department of Mechanical and Intelligent Systems Engi-neering, Tokyo Institute of Technology
    • 黒崎 晏夫 KUROSAKI Yasuo
    • 電気通信大学 電気通信学部 機械制御工学科 Department of Mechanical and Control Engineering, The University of Electro-Communications

抄録

This paper deals with the basic mechanism dominating the wavelike flow mark generation in polymer injection molding. There have been a number of papers describing the relation between molding conditions and flow mark generation in polymer injection moldings, but very limited information about the basic mechanism dominating the flow mark generation has so far been reported. In the present paper, the authors paid attention to the development of the frozen polymer layer adjacent to the mold wall, just behind the melt-mold contact line, so as to evaluate analytically the bending strain in the developing frozen layer due to contraction of the polymer during solidification, and tried to correlate the flow mark generation with the bending strain. The result clearly showed that the aspect ratio of flow marks estimated from the bending strain in the frozen layer agrees well not only with the aspect ratios of the actual flow marks measured by ourselves, but also with the ones reported in the literature. The authors therefore concluded that the basic mechanism dominating the flow mark generation can be attributed to the bending strain in the developing frozen layer due to contraction of polymer during solidification.

収録刊行物

  • 成形加工  

    成形加工 10(9), 732-741, 1998-09-20 

    The Japan Society of Polymer Processing

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各種コード

  • NII論文ID(NAID)
    10002131811
  • NII書誌ID(NCID)
    AN10278882
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09154027
  • NDL 記事登録ID
    4567436
  • NDL 雑誌分類
    ZP17(科学技術--化学・化学工業--高分子化学・高分子化学工業--ゴム・プラスチックス)
  • NDL 請求記号
    Z17-1254
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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