Molds & Tooling
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EVA length out of tolerance
Fenómeno do problema
EVA product length deviation >±0.5mm exceeds tolerance
Análise das causas
EVA shrinkage rate unstable, fluctuating ±0.5%; mold dimension design did not consider shrinkage compensation; insufficient cooling with dimensions not stabilized
Solução
1) Accurately measure EVA shrinkage rate and compensate the mold; 2) Sufficient cooling to ensure dimensional stability; 3) Annealing treatment to eliminate post-shrinkage
Conclusão principal
Length out of tolerance is caused by unstable shrinkage rate; precise shrinkage compensation is key
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