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Flow visualization of the gas-assisted injection molding process

โœ Scribed by S. Y. Yang; S. J. Liou; W. N. Liou

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
397 KB
Volume
16
Category
Article
ISSN
0730-6679

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โœฆ Synopsis

Gas-assisted injection molding can effectively produce parts free of sink marks in thick sections and free of warpage in long plates. This research investigated the basic filling phenomena in a gas-assisted injection molding process with flow visualization. A high-speed video camera was used to record the mold filling phenomena of rectangular cavities with various arrangements of gas channels. The mold-filling phenomena are compared and guidelines for layout of gas-channel ribs are drawn.

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Closed-loop control of gas pressure in the gas-assisted injection molding process
โœ Shia-Chung Chen; Sher-Meng Chao ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 247 KB ๐Ÿ‘ 1 views

This paper is concerned with the practical application of closed-loop control on the gas pressure during the gas-assisted injection molding process. In principle, the gas-injection process can be treated as a valve-controlled tank charging. One of the critical factors for the successful application