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Mold Design / Draft

Contents Introduction Safety Molding Machines Molding Conditions Recycling
Molding Characteristics Product Design Mold Design Countermeasures for Defects
Runners  Gates  Draft  Undercut  Gas Vents  Mold Temp. Control  Mold Material
List of DURACON® POM grades This page's PDF(0.97MB)

8. Mold Design

8.3 Draft

Since mold shrinkage of DURACON® POM is relatively great, a smaller draft can be used in comparison with amorphous resins. However, in view of mold release, it is desirable to apply as large a draft as possible within the allowable range:

  • At least 1/4° to 1/2° is recommended. If possible, approximately 1° is preferable.

The knockout method, the position and number of knockout must be taken into full consideration for improving mold release.

 

Runners  Gates  Draft  Undercut  Gas Vents  Mold Temp. Control  Mold Material
Contents Introduction Safety Molding Machines Molding Conditions Recycling
Molding Characteristics Product Design Mold Design Countermeasures for Defects