ボーイング現象の解析 -横延伸工程における分子配向挙動の観察- Analysis of Bowing Phenomenon -Observation of Molecular Orientation Behaviors during Transverse Direction Stretching Process-

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Experiments were made by using a pilot plant of successive biaxial stretching process for poly (ethylene terephthalate) (PET) films, whose molecular orientation (MO) and bowing behavior were investigated first during the whole tenter. The following results were obtained: (1) Higher temperatures in the latter of the transverse stretching zone can give rise to the bowing distortions. (2) At the center of film in the transverse direction (TD), the MO degree in the TD becomes high as the actual transverse stretching ratio increases, passing the plane random orientation point. That is, the MO of film tilts from the machine direction (MD) at the beginning of transverse stretching to the TD after stretching without rotation. (3) At the edge of film, the principal molecular orientation axis begins gradually to tilt from the MD to the TD with rotation at the point where the bowing distortion increases rapidly, and afterwards gradually changes further more to the TD with an increase of actual stretching ratio.

収録刊行物

  • 成形加工

    成形加工 8(9), 605-610, 1996-09-20

    The Japan Society of Polymer Processing = プラスチック成形加工学会

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各種コード

  • NII論文ID(NAID)
    10003812700
  • 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
    4038311
  • 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  IR 
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