Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Computer Simulation of Extrusion and Die Design for the Extrusion of Butyl Rubber

부틸고무의 압출을 위한 압출해석 및 다이설계

  • Choi, T.G. (Department of Product Design Manufacturing Engineering, Graduate school, Seoul National University of Science and Technology) ;
  • Lee, H.J. (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology) ;
  • Lyu, M.Y. (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology)
  • 최태균 (서울과학기술대학교 대학원 제품설계금형공학과) ;
  • 이희주 (서울과학기술대학교 기계시스템디자인공학과) ;
  • 류민영 (서울과학기술대학교 기계시스템디자인공학과)
  • Received : 2014.09.15
  • Accepted : 2014.10.11
  • Published : 2014.12.31
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Abstract

Butyl rubber is used as an adhesive and it is mainly used in the form of sheets. The goal of this study is to design an extrusion die for the butyl rubber sheets using computer simulation. The extrusion die for the butylrubber sheets consists of manifold area and land area. In the manifold area, flows are spread from the entrance of the extrusion die to the land area. In the land area, flows become stable to the flow direction and uniform sheet can be obtained. Island area is being installed in the land area to get uniform flow. Four parameters, angle of manifold, length of manifold, length of land and island, were examined in the computer simulation. The optimum geometry of the extrusion die is derived which has a uniform flow in the width direction of the die.

건축용 접착제로 활용되고 있는 부틸고무는 주로 시트의 형태로 사용된다. 본 연구에서는 컴퓨터 해석을 통해 부틸고무 시트 압출용 다이를 설계하였다. 압출용 다이의 내부는 크게 매니폴드와 랜드로 나뉜다. 매니폴드는 다이중앙에서 유입되는 재료가 폭 방향으로 흐름이 이루어 지도록 하는 역할을 한다. 랜드는 재료가 흐름 방향으로 균일하게 흐르게 하여 균일한 두께의 시트가 성형되도록 한다. 다이는 매니폴드와 랜드 외에도 아일랜드를 설치하여 흐름의 안정을 주도록 하는 경우가 많다. 본 연구에서는 컴퓨터 해석을 통하여 다이에서 매니폴드의 각도와 길이, 랜드 길이 그리고 아일랜드를 설계 변수로 하여 다이 출구에서 다이 폭 방향으로 균일한 흐름이 형성되도록 하는 최적의 다이형상을 연구하였다.

Keywords

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