Injection Moulding: Evaluation of Appropriate Melt Injection Points for the Gas Injection Technique

✍ Scribed by Hans-Peter Heim

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 269 KB
• Volume: 287
• Category: Article
• ISSN: 1438-7492
• DOI: 10.1002/mame.200290000

✦ Synopsis

Abstract

In gas assisted injection moulding the melt front advancement has a considerable effect on the gas penetration. The evaluation of an appropriate melt filling is an important step to avoid instabilities in the process sequence. Taking a sample moulded part a procedure is presented that enables the part designer to evaluate required melt and gas injection points according to the gas injection technique. Using finite element simulations, different calculations for the melt front advancement lead to the correct gate location.
Presentation of different degrees of filling for the optimised article geometry.

magnified imagePresentation of different degrees of filling for the optimised article geometry.