1996-04-01

The Prediction of Shrinkage and Warpage in Plastics Injection Molded Auto Parts 91A088

The article emphasizes the effect of flow on dimensional stability, mechanical properties and surface finish, and the close coupling of dimensional stability and mechanical properties.
Warpage is the result of the balance between the structural stiffness of the part and the stress pattern resulting in variation in shrinkage due to area shrinkage, orientation, and thermal effects.
The practical solution to warpage depends on the use of software to isolate the basic causes of warping which then leads to a logical solution procedure.

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