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Problem & Lösung

Praktische Antworten auf häufige Herausforderungen mit Kunststoffmaterialien

11636 Fragen
Q
Performance decay of EVA with repeated processing
A
Performance decay from multiple processing is caused by thermo-mechanical degradation; limiting recycled material and supplementing antioxidant are key
Production & Quality EVA recycling performance decay antioxidant supplement thermal degradation shear degradation
Q
Unbalanced multi-cavity filling in EVA '2079851475616104452
A
Unbalanced multi-cavity filling is caused by runner design; balanced runner and mold flow analysis are key
Injection Molding EVA injection multi-cavity balance runner design gate size mold flow analysis
Q
Ejector whitening on EVA injection molded products
Q
Unstable feeding in EVA extrusion
A
Unstable feeding is caused by pellet characteristics; loss-in-weight feeding and anti-bridging are the core
Extrusion & Post EVA feeding bridging loss-in-weight feeder pelletizing feeding screw
Q
Poor printing adhesion of EVA film
A
Poor printing adhesion is caused by insufficient surface polarity; corona treatment and dedicated ink are key
Extrusion & Post EVA film printing adhesion corona treatment dedicated ink surface tension
Q
EVA extruded film thick at edges and thin in middle
A
U-shaped thickness is caused by die flow channel and swell differences; coat-hanger die and gap fine-tuning are key
Molding Process EVA film thickness distribution coat-hanger die gap fine-tuning edge effect
Q
Uneven color of EVA mixed with color masterbatch
A
Color masterbatch carrier matching and sufficient dispersion are key to color uniformity
Injection Molding EVA coloring color masterbatch carrier compatibility pigment dispersion color streaks
Q
Rough EVA extrusion surface
A
Q
Severe screw wear of EVA extruder
A
Screw wear is caused by filler friction and adhesion; wear-resistant screw and temperature control are key
Extrusion & Post EVA extrusion screw wear nitrided screw filler friction bimetallic screw
Q
Oil spots on EVA injection molded products
A
ChemAI