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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 33 , No. 2

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[ Article ]
Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 33, No. 2, pp. 113-118
Abbreviation: J. Korean Soc. Manuf. Technol. Eng.
ISSN: 2508-5107 (Online)
Print publication date 15 Apr 2024
Received 28 Feb 2024 Revised 21 Mar 2024 Accepted 26 Mar 2024
DOI: https://doi.org/10.7735/ksmte.2024.33.2.113
부분 압축 성형 공정에서 절연층이 성형 렌즈의 부분 충진 특성에 미치는 영향에 관한 연구
이남석^a^{, *}

Study on the Effects of an Insulation Film on the Cooling Process and Filling Properties of Mold Cavities During Partial Compression Molding
Lee, NamSeok^a^{, *}
aDepartment of Smart Mechanical Engineering, Yonam Institute of Technology
Correspondence to : ^*Tel.: +82-55-751-2079 E-mail address: nslee@yc.ac.kr (NamSeok Lee).



Funding Information ▼ Yonam Institute of Technology 202208

Abstract

We investigated the effects of an insulation layer on the replication quality of micro lenses using partial-filling compression molding processes. A polyimide film with high thermal stability was applied to a mold insert to delay cooling, and a strain gauge was used to measure the surface temperature of the mold insert. Under this method, the thermal history during molding and cooling was analyzed with and without the insulation layer. Finally, we analyzed and experimentally compared the surface profiles of the molded lenses with and without the insulation layer. Results showed that compared to the case without an insulation layer, the height of the partial-filling molded lens increased by 1.4 μm after the insulation layer was applied.


Keywords: Compression molding, Micro mold, Partial-filling, Strain gauge, Thermal strain

Acknowledgments

이 연구는 연암공과대학교 교비연구과제 (과제번호: 202208) 지원으로 진행되었습니다.

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NamSeok Lee

Professor in the Department of Smart Mechanical Engineering, Yonam Institute of Technology. His research interest is Micro/ Nano Fabrication in the OLED and Semiconduct Process.

E-mail: nslee@yc.ac.kr