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11636 soru
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
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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
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Q
Ejector whitening on EVA injection molded products
A
Ejector whitening is caused by excessive ejection force and insufficient cooling; increasing ejector pin area and extending cooling time are key
Injection Molding EVA injection ejector whitening ejector pin area cooling time demolding draft
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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
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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
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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
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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
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Q
Rough EVA extrusion surface
A
Rough surface is caused by low temperature extrusion and die defects; raising temperature and polishing die are the core countermeasures
Extrusion & Post EVA extrusion rough surface die polishing extrusion temperature melt elasticity
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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
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Q
Oil spots on EVA injection molded products
A
Oil spots are caused by external sources of release agent and lubricant; reducing release agent and sealing mold lubrication are key
Injection Molding EVA injection oil spots mold release agent lubricant exudation mold sealing
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Tüm Konular 11636 Material Drying 1439 Injection Molding 1506 Molding Process 740 Molds & Tooling 1506 Processing Machinery 2025 Extrusion & Post 2239 Blow Molding 315 Thermoforming 141 Material Analysis 1343 Production & Quality 382
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