Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Generation of Elongational Flow in the Skin/Core Coextrusion Systerm(II)-Elongational Flow in the converging Die-

Skin/Core계 복합 사출을 이용한 인장 흐름의 발생(II) -Converging die에서의 인장흐름-

  • 김환철 (전북대학교 공과대학 섬유공학과) ;
  • 조순채 (전북대학교 공과대학 섬유공학과)
  • Published : 1996.03.01

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Abstract

The basic problem in polymer melt elongational rheometry is obtaining a stable and constant elongational flow field free from shear effects. The objective of this study is to present a technique to generate elongational flow of polymer melts in a converging channel. The results of the study included the development of numerical solutions for flow behavior in the coextrusion of a core polymer melt encapsulated by a sufficiently low viscous skin polymer melt for linear and converging die geometry. In the converging geometries, it was possible to generate nearly pure elongational know in the core by choosing an appropriate skin material.

Keywords

References

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