+ The material shrinkage during the cools+ Products with irregular thickness or the lobes convex, hard is not the correct design increases tendon+ Compensation data missing+ Spray pressure and low forming pressure+ The time keeping and short cooling time+ Heat melt the plastic material and all the mold is installed too high -How to fix+ Reduced product thickness in places where there are dents and designed the lobes convex, hard reasonable increase in tendon+ Increase the size of the channel lead and nozzle to nozzle khong of being cool soon+ Add or do the exhaust holes big+ Increase the buffer at the end of the period to make up good data+ Increase the time of screw and injection speed reduction+ Increase cooling time+ Check valve open to ensure a self revert of material does not leak on one side.
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