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Answer Posted / karthikeyan..n
Injection pressure/injection rate too high
Barrel temperature too high
Insufficient clamping pressure
Mould sliding cores clearance too large Imprecise mould
alignment
Foreign material caused clearance on mould mating surface
Mould temperature too high Air venting design too large
Material over packed the mould cavity
Mould parting defects after age
Hopper temperature too high
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