Flow front advancement of molten thermoplastic materials during filling stage of a mold cavity

Ozdemir A., Uluer O., Guldas A.

Polymer Testing, cilt.23, sa.8, ss.957-966, 2004 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 23 Sayı: 8
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1016/j.polymertesting.2004.04.011
  • Dergi Adı: Polymer Testing
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.957-966
  • Anahtar Kelimeler: injection molds, melt behaviour, melt front advancement, POLYMERS
  • Gazi Üniversitesi Adresli: Evet

Özet

In this study, an injection mold which allows images of the flow behavior in the mold cavity to be obtained was designed and manufactured. Under real processing conditions, HDPE and PP materials were forced into the mold cavity under five different injection pressures and six different injection velocities. Filling and flow behavior of molten HDPE and PP were recorded with a video camcorder capable of 25 frames/s. The records obtained were divided into frames and all of these frames were transformed to the *.jpg and *.bmp photo format with a photo capture program which was coded in Borland Delphi 6.0 by the authors. Under the same processing conditions, experimentally obtained melt front advancement results were compared with results from an independent injection molding analysis program, Moldflow 5.0, which employs a finite element method. © 2004 Elsevier Ltd. All rights reserved.