[ Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 28, No. 2, pp.100-105

ISSN: 2508-5107 (Online)

Print publication date 15 Apr 2019

Received 30 Jan 2019 Revised 11 Apr 2019 Accepted 13 Apr 2019

DOI: https://doi.org/10.7735/ksmte.2019.28.2.100

스크루 형상에 따른 용융 수지 혼합과 성형품 밀도

홍청민^a^{, *} ; 유중학^b ; 정현석^c

Melting Plastic Mixing and Product Density Based on Screw Shape

Cheong-Min Hong^a^{, *} ; Joong-Hak Yoo^b ; Hyun-Suk Jung^c

aSchool of Mechatronics Engineering, Korea University of Technology and Education, 1600, Chungjeol-ro, Byeongcheon-myeon, Dongnam-gu, Cheonan, Chungnam-do, 31253, Korea
bDepartment of Mechatronics Engineering, Korea University of Technology and Education, 1600, Chungjeol-ro, Byeongcheon-myeon, Dongnam-gu, Cheonan, Chungnam-do, 31253, Korea
cDepartment of Nano measurement, Korea Polytechnics II, 41-21, Songwon-gil, Gongdo-eup, Anseong, Gyeonggi-do, 17550, Korea

Correspondence to: ^*Tel.: +82-32-715-5883 Fax: +82-32-518-5883 E-mail address: 282cjdalsl@naver.com (Cheong-Min Hong).

Abstract

The screw in the injection molding machine mixes with plasticization. This study uses a standard screw and barrier screw to verify whether the screw shape in the mold affects the melt mixing. The relationship between the mixing of the molten resin and the weight and density of the injection molding was tested and the statistics were confirmed. The results show that color lines were generated only in the standard screw during the mixing of the master batch. The average weight of the injection products with the barrier screw was larger than that with the standard screw by 1.09% and the density was about 1.01%. The average distribution of the weight was lesser for the barrier screw than for the standard screw. Through statistical analysis, we confirmed that the screw shape affects the melt mixing and density, and the density of the barrier screw can be used to stabilize the densities.

Keywords:

Barrier screw, Injection molding, Standard screw, Wight of injection product, Density of injection product

Acknowledgments

이 논문은 2018년 한국기술교육대학교 교수 교육 연구진흥과제 지원에 의하여 연구되었음.

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