Molds & Tooling
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ABS product warpage——glass fiber orientation type
Problem Phenomenon
GF-ABS flat plate products warp along a fixed direction, and adjusting cooling has little effect.
Cause Analysis
The glass fibers orient along the flow direction, and the shrinkage rates in the flow direction and transverse direction differ greatly, forming anisotropic warpage, which is jointly determined by the material and the gate.
Solution
①Adjust the gate position to change the material flow/fiber orientation; ②do Moldflow fiber orientation analysis; ③balance the holding pressure; ④change to a grade with lower fiber content or mineral filling when necessary.
Key Takeaway
Orientation-type warpage relies on gate design, not on hard pressing by cooling.
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