Browse > Article

Analysis for injection molding and in-mold coating of automotive armrests  

Park, Jong-Lak (Dep. of Aeronautical & Mechanical Design Eng., Korea Nat'l Univ. of Transportation)
Lee, Ho-Sang (Dep. of Aeronautical & Mechanical Design Eng., Korea Nat'l Univ. of Transportation)
Publication Information
Design & Manufacturing / v.13, no.1, 2019 , pp. 48-54 More about this Journal
Abstract
Analytical and experimental study were carried out in order to achieve simultaneous coating and injection molding of an automotive armrest. A mold was designed to be included one core and two cavities, which were composed of a substrate cavity and a coating cavity. The materials used were PC/ABS for substrate and 2-component Polyurethane for coating. The predicted flow patterns were in good agreement with experimental results in injection molding and in-mold coating. Based on analysis and experiment, it was found that the optimal processing conditions were packing pressure of 90MPa and holding time of 7sec.
Keywords
Flow Pattern; Injection Molding; In-Mold Coating; Packing; Polyurethane;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Park, C. H., Ahn, H. J., Choi, D. H. and Pyo, B. G., Two-stage design optimization of an automotive fog blank cover for enhancing its injection molding quality, Trans. of the KSME(A), Vol. 34, No. 8, pp. 1097-1103, 2010.
2 Lee, H. S. and Kim, D. M., A study on mixing characteristics of two-component polyurethane for in-mold coating, J. Korean Soc. Precis. Eng., Vol. 30, No. 3, pp. 317-323, 2013.   DOI
3 Kim, D. M. and Lee, H. S., Experimental study on the processing conditions of in-mold coating for injection-molded plates, Int. J. Prec. Eng. Manuf., Vol. 17, No. 10, pp. 1333-1339, 2016.   DOI
4 Park, J. R. and Lee, H. S., An experimental study of in-mold coating of automotive armrests, Trans. Korean Soc. Mech. Eng. A, Vol. 39, No. 7, pp. 687-692, 2015.   DOI
5 Seo, B. H. and Lee, H. S., Development of two-component polyurethane metering system for in-mold coating, J. Korea Society of Die & Mold Engineering, Vol.10, No.2, pp. 1-6, 2016.
6 Jeong, Y. Y. and Lee, H. S., Effects of coating thickness on cavity pressure and surface characteristics in in-mold coating, Polymer(Korea), Vol. 42, No. 1, pp. 13-19, 2018.   DOI
7 Sigmasoft User's Manual, Sigma Engineering GmbH, Aachen, 2012.