Molds & Tooling
5 görüntüleme
EVA flatness is insufficient
Sorun Belirtisi
EVA flat product flatness >0.5mm/100mm warpage
Neden Analizi
EVA shrinkage rate is large and differs in all directions; uneven mold cooling; residual stress release causing continuous warpage
Çözüm
1) Uniform mold temperature to reduce temperature differences; 2) Increase holding pressure to reduce shrinkage differences; 3) Annealing to release residual stress
Temel Çıkarım
Insufficient flatness is caused by shrinkage differences and stress; uniform cooling and annealing are key
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