[ Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 30, No. 2, pp.111-118

ISSN: 2508-5107 (Online)

Print publication date 15 Apr 2021

Received 11 Dec 2020 Revised 7 Mar 2021 Accepted 16 Mar 2021

DOI: https://doi.org/10.7735/ksmte.2021.30.2.111

미세 액상실리콘 제품의 마이크로 버블 개선을 위한 금형설계

동선희^a ; 손덕수^a ; 이우영^a^{, *}

Mold Design for Improving the Microbubble of Fine Liquid Silicon Products

Seon-Hee Dong^a ; Deuk-soo Son^a ; Woo-Young Lee^a^{, *}

aSchool of Mechanical Engineering, Korea University of Technology and Education

Correspondence to: ^*Tel.: +82-41-560-1134 E-mail address: wylee@koreatech.ac.kr (Woo-Young Lee).

Abstract

Owing to its outstanding performance and properties including weatherability, thermal stability, and chemical resistance, liquid silicon rubber (LSR) is used widely for electronics and medical products, and its application has been extended to other industries as well. A common issue found in products with fine features is microbubbles, which are heavily dependent on the molding process and mold structure. Therefore, this study suggests an optimum overflow mold type to minimize the microbubbles trapped in a product throughout a molding simulation and experimental analysis with three different types of overflow. The results show that the sample group produced with the optimum overflow type meets the standard industrial cosmetic criteria.

Keywords:

Liquid silicon rubber (LSR), Injection molding, Overflow, Microbubble, Lens-angle supporter (LAS)

Acknowledgments

이 논문은 2020년도 한국기술교육대학교 교수 교육연구진흥과제 지원에 의하여 연구되었습니다.

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Seon-Hee Dong

Ph.D. candidate in the School of Mechanical Engineering, Korea University of Technology and Education.Her research interest is mechanical engineering, injection molding and precision measurement.

E-mail: sunny61@koreatech.ac.kr

Deuk-soo Son

Ph.D. candidate in the School of Mechanical Engineering, Korea University of Technology and Education.His research interest is mechanical engineering.

E-mail: dsson@koreatech.ac.kr

Woo-Young Lee

Professor in the School of Mechanical Engineering, Korea University of Technology and Education.His research interest is precision manufacturing process and product design.

E-mail: wylee@koreatech.ac.kr