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Temperature distributions of molten polypropylene during injection molding

✍ Scribed by N. Sombatsompop; W. Chaiwattanpipat

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
160 KB
Volume
19
Category
Article
ISSN
0730-6679

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✦ Synopsis

The changes in temperature distributions of flowing polypropylene melt in the barrel of an injection molding machine were investigated using a designed experimental rig coupled with a temperature sensing device. The main objective was to study the effect of injection speed on melt temperature measurement. In the course of the study, the temperature of the melt changed continuously with injection time, which was associated with a number of factors, such as shear heating, heat conduction, residence time, and the flows occurring in the barrel. The experimental results obtained differed from theoretically calculated results.

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