Defect: Bubbles on sealing surface | TPR squish ball
Cause: 1) High glue concentration causes the glue to dry too quickly, trapping air and forming bubbles; 2)redundant and uneven glue surrounding lid.
Solution: 1)Glue concentration must adjust with different seasons, higher in winter or low temperature, lower in summer; 2) glue on lid surrounded should be even when assemble to ball.
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Rework difficulty: * * * * *
Rework collateral risk: * * * * *
