Characterization of Polymers for Fine Processing. II. Simulation of Crystallization in Injection Molding Process with a Large Mold.

DOI Web Site 2 Citations 17 References
  • ITO Hiroshi
    Department of Material and Biological Engineering, Tsuruoka National College of Technology
  • TAKIMOTO Jun-ichi
    Department of Materials Science and Engineering, Yamagata University
  • TADA Kazumi
    Plamedia Research Corporation
  • KOYAMA Kiyohito
    Department of Materials Science and Engineering, Yamagata University

Bibliographic Information

Other Title
  • 高分子の微細・精密加工とキャラクタリゼーション　ＩＩ　大型射出成形品における結晶化予測
  • オオガタ シャシュツ セイケイヒン ニ オケル ケッショウカ ヨソク

Search this article

Abstract

We have calculated the crystallization of isopolypropylene (iPP) during injection molding in the case of large molded products. Due to the long filling time, the crystallization started during the filling stage just inside the surface layer of the product. On the other hand, the relative crystallinity at the surface did not reach 100% even at the end of the cooling stage. Since pressure becomes very high during the molding process of large products, the dependence of the linear growth rate of spherulite G not only on temperature but also on pressure is very important in determining the crystallization. At the surface of the product, low temperature and high pressure make G so low that the crystallization does not complete even at the end of the cooling stage.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 53 (6), 333-338, 1996

    The Society of Polymer Science, Japan

Citations (2)*help

See more

References(17)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top