Warpage
Cause
1. Inappropriate gate location
2. Un even molded product thickness
3. Design of undercut, rib, and boss is inappropriate
4. Lack of cooling
5. Large anisotropic of shrinkage ratio
Countermeasure
1a. Change the gate location.
1b. Add the gates.
2. Try to make the molded product thickness even.
3. Change the design, thinking about warpage.
4. Drop the mold temperature, and make the cooling time longer.
5. Use the low warpage grade.
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