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Problem & Solution

Practical answers to common plastic material challenges

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11636 questions
Q
CEF injection sink marks
Q
CEF repeated processing performance decay
A
The performance decay of multiple processing is caused by thermo-mechanical degradation; limiting recycled material and supplementing antioxidants are the key
Production & Quality CEF recyclingperformance decayantioxidant supplementationthermal degradationshear degradation
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Q
CEF injection multi-cavity filling unbalanced
A
Multi-cavity filling imbalance is caused by the runner design; balanced runners and mold flow analysis are the key
Injection Molding CEF injectionmulti-cavity balancerunner designgate sizemold flow analysis
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Q
CEF injection molded part ejector white marks
Q
CEF extrusion feeding unstable
A
Unstable feeding is caused by particle characteristics; loss-in-weight feeding and anti-bridging are the core
Extrusion & Post CEF feedingbridgingloss-in-weight feedergranulationfeeding screw
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Q
CEF film printing adhesion poor
A
Poor printing adhesion is caused by insufficient surface polarity; corona treatment and special ink are the key
Extrusion & Post CEF filmprinting adhesioncorona treatmentspecial inksurface tension
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Q
CEF extrusion film thick at edges and thin in the middle
A
The U-shaped thickness is caused by the die runner and swell differences; the coat-hanger die and gap fine-tuning are the key
Extrusion & Post CEF filmthickness distributioncoat-hanger diegap fine-tuningedge effect
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Q
CEF and color masterbatch mixing color uneven
A
Carrier matching of the color masterbatch and sufficient dispersion are the key to color uniformity
Injection Molding CEF coloringcolor masterbatchcarrier compatibilitypigment dispersioncolor streak
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Q
CEF extrusion surface rough
Q
CEF extruder screw wear severe
A
Screw wear is caused by filler friction and adhesion; wear-resistant screw and temperature control are the key
Extrusion & Post CEF extrusionscrew wearnitrided screwfiller frictionbimetallic screw
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