NUMERICAL STUDY ON EXTRUSION DIE DESIGN OF MICRO CATHETER WITH INVERSE EXTRUSION

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2023 Vol.28, Issue 4 Preview Page Next Page

NUMERICAL STUDY ON EXTRUSION DIE DESIGN OF MICRO CATHETER WITH INVERSE EXTRUSION 역압출 수치 해석을 이용한 마이크로 카테터 압출 다이 설계에 관한 연구: 홍성근,^1,2 전원진,^1,2 김우진,¹ 이은택^*2
S.G. Hong,^1,2 W. Jun,^1,2 W. Kim¹ and E. Lee^*2; ¹한국생산기술연구원 첨단메카트로닉스연구그룹, ²금오공과대학교 기계시스템공학과

¹Advanced Mechatronics R&D Group, Korea Institute of Industrial Technology
²Department of Mechanical System Engineering, Kumoh National Institute of Technology

31 December 2023. pp. 45-51

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Abstract

This study represents design method of extrusion die for micro catheter manufacturing with inverse extrusion. The inverse extrusion can predict the geometry of the die required to achieve the target profile of the extrudate. Peripherally inserted central catheter is used for many medical applications and has various geometries. In this study, the design of the die for peripherally inserted central catheter with 2 lumens is investigated. The geometries of the die are predicted to obtain the extrudate with the various thickness of the outer and middle wall of the tube. The velocity distribution of the molten polymer at the end of the die exit and the thickness ratio of the die according to the thickness ratio of the target profile are examined. The correlations between the thickness ratio of the target and the geometry of the predicted die are identified. The inverse extrusion and correlation are useful to design the geometry of the die for the desired profile of the extrudate.

Keywords

마이크로 카테터(Micro Catheter)

압출 공정(Extrusion Process)

역압출(Inverse Extrusion)

전산유체역학(Computational Fluid Dynamics)

비뉴턴 유체 (Non-Newtonian Fluid)

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