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IJAT Vol.9 No.1 pp. 3-9
doi: 10.20965/ijat.2015.p0003
(2015)

Paper:

Improving the Properties of Injection Molded Products with Induction Heating and Cooling Molds

Yasuhiko Murata, Masayoshi Koike, and Song Pan

Department of Mechanical Engineering, Nippon Institute of Technology, 4-1 Gakuen-dai, Miyashiro-machi, Minamisaitama-gun, Saitama 345-8501, Japan

Received:
August 21, 2014
Accepted:
November 28, 2014
Published:
January 5, 2015
Keywords:
polymer, injection molding, induction heating and cooling mold, gas vent, weld line
Abstract

An induction heating and cooling mold that can keep the surface temperature of the entire mold cavity uniform and has a new heating and cooling insert with a gas vent mechanism is designed and produced. The effects of the temperature of the mold cavity surface, of the cavity air during the melt filling process, and of the organic gas generated fromthe melt on the appearance andmechanical properties of an injectionmolded product made of high impact polystyrene are studied. It is found that the heating and coolingmold with a gas vent can suppress molding defects, such as a weld lines and gas burns, and can greatly increase the displacement ratio of molded products obtained in the tensile test. This means that the effects of the gas vent and the surface temperature of the cavity have been quantitatively clarified using this type of mold.

Cite this article as:
Y. Murata, M. Koike, and S. Pan, “Improving the Properties of Injection Molded Products with Induction Heating and Cooling Molds,” Int. J. Automation Technol., Vol.9, No.1, pp. 3-9, 2015.
Data files:
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