Problem & Lösung

Praktische Antworten auf häufige Herausforderungen mit Kunststoffmaterialien

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EVA foam elastic recovery is poor

Molding Process EVA foam elastic recovery crosslinking degree foam density VA content

EVA foam becomes hard due to excessive crosslinking

Excessive crosslinking is caused by too much DCP; moderate crosslinking is key

Molding Process EVA foam excessive crosslinking DCP dosage crosslinking time hardness control

EVA compression set is large

Molding Process EVA compression set crosslinking degree elastic recovery reinforcing filler

EVA surface stress whitening

Molding Process EVA stress whitening orientation stress annealing treatment stress concentration

EVA foam shrinkage is large

Molding Process EVA foam shrinkage crosslinking degree DCP post-treatment VA content

EVA foam hardness is too high

Molding Process EVA foam high hardness foam density crosslinking degree VA content

EVA internal crystallization is coarse

Molding Process EVA coarse crystallization spherulite refinement nucleating agent cooling rate

EVA extruded film thick at edges and thin in middle

Molding Process EVA film thickness distribution coat-hanger die gap fine-tuning edge effect

Material sticking to sizing sleeve of EVA extruded pipe

Molding Process EVA pipe sizing sleeve sticking polishing lubricating water elastomer adhesion

EMA hardness too low

Molding Process EMA hardness too low rigid filler plasticizer crystallization control

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