Defect: Injection flow mark | TPR ball
Cause: 1) Mould design deficiency; 2) Poor injection condition and workmanship.
Solution: 1) Revise mould, like injection gate, thickness..; 2) Adjust injection condition and workmanship.
Typical: * * * *
Rework difficulty: * * * * *
Rework collateral risk: * * * * *
