A Study on a In-mold Packaging Process using Injection Molding

Kwan-Hee Lee , Duck-Soo Park

, Jae Sung Yoon

, Yeong-Eun Yoo

, Doo-Sun Choi

, Sun-Kyoung Kim

A Study on a In-mold Packaging Process using Injection Molding

Key Words: In mold packaging process (인 몰드 패키징), Injection mold(사출성형), Micro channel(마이크로 채널), Brass mold (황동 코어)

Abstract

A novel in-mold packaging process has been developed to manufacture devices with closed channels.

In this unified process, fabrication of open channels and forming the rigid cover on top of them are sequentially integrated in the same mold. The entire process is comprised of two phases. In the first phase, the open channels are fabricated under an exquisitely controlled temperature and pressure using the conventional micro injection molding technology. In the second phase, the closed channels are fabricated by conducting the injection molding process using the molded structure with the open channels as a mold insert. As a result, the in-mold technology can eliminate the bonding processes such as heating, ultrasonic or chemical processes for cohesion between the channel and the cover, which have been required in conventional methods.

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E-mail : [email protected]

TEL : (042)868-7903 FAX : (042)868-7149

** 서울산업대학교 금형설계학과

1. 서 론

대한기계학회 2008년도 추계학술대회 논문집

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Fig. 3 Mold Design Fig. 1 Dimensions and SEM Image of Machined

micro channel core

2. 실험 장비

2.1 마이크로 채널 시편 제작

2.2 사출성형 실험 장비

Fig. 2 Image of Specimen with micro channel

Garage 80NH PMMA(Polymethyl methacrylate)를 사용 하였다.

3. 성형 조건 및 실험 결과

3.1 성형 조건

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3.2 In-mold packaging 성형 결과

Fig. 4 Results depending on the flow distance from the gate: case (a) 40mm; case (c) 50mm; case (f) 60mm

Fig. 5 Results with different directions flow: case (i), flow cross to the micro channel; case (j), flow parallel with the micro channel

Fig. 6 Results with different gate sizes: case (g), 10mm; case (h), 5mm

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Fig. 7 Results with different injection speeds: case (e), 50mm/s; case (f), 30mm/s; case (g), 20mm/s.

Fig. 8 Optimized condition for a novel in-mold packaging.

4. 결 론

후 기

본 연구는 지식경제부 전략기술개발사업의 지원 으로 수행 되었습니다.

참고문헌

(1) D. S . Kim, S. H. Lee, C. H. Ahn, J. H. Lee, T. H. Kwon, 2006, "Disposal integrated microflu dic biochip for blood typing by plastic microinje ction moulding", The royal society of chemistry, 794~802.

(2) Paul A. Tres, 2006, "Designing plastic parts for assembly", Hanser publishers, 6th edition, 67~13 7.

(3) E. alfredo campo, 1999, "The complete part desig n handbook", Hanser publishers, chapter 8, 405~

455.

(4) T. H. kim, Y. E. Yoo, D. S. Choi, S. K. Kim, Y. H. Seo, Y, W, Park, 2006, "Injection molding of a substrate with closed channels", KSPE Autu mn conference, 529~530

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