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Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

1506 perguntas
Q
POE surface tiger skin pattern
A
Tiger skin pattern is caused by unstable injection front; multi-stage injection and high mold temperature are key
Injection Molding POEtiger skin patterninjection speedmulti-stage injectionmold temperature control
Q
POE surface color difference obvious
A
Color difference is caused by uneven dispersion and orientation; masterbatch method and stable processing are key
Injection Molding POEcolor differencecolor masterbatch dispersionpigment orientationtemperature stability
Q
POE surface orange peel
A
Orange peel is caused by rapid cooling and solidification; raising mold temperature and holding pressure are key
Injection Molding POEorange peelmold temperatureholding pressuresurface solidification
Q
POE internal stress concentration severe
A
Internal stress is caused by fast injection and uneven cooling; reducing speed, uniform cooling and annealing are key
Injection Molding POEinternal stressorientation stressannealing treatmentuniform cooling
Q
POE/glass fiber '2079851475616104452 floating fiber
A
POE floating fiber is caused by insufficient coating and poor interface; coupling agent and lowering speed are key
Injection Molding POE/glass fiberfloating fibercoupling agentPOE-g-MAHinjection speed
Q
POE toughened PP flowability greatly reduced
A
Flowability reduction can be balanced with low-viscosity grades and processing aids
Injection Molding POE tougheningflowabilityMFRprocessing aidviscosity matching
Q
POE '2079851475616104452 cold slug marks
A
Cold slug marks are caused by solidified residual material in the nozzle; raising nozzle temperature and cold slug well design are key
Injection Molding POE injectioncold slug marknozzle temperaturecold slug wellinjection pressure
Q
POE '2079851475616104452 flow marks
A
Flow marks are caused by unstable injection front and rapid cooling; multi-stage injection and high mold temperature are key
Injection Molding POE injectionflow markinjection speedmold temperaturegate area
Q
POE '2079851475616104452 sink marks
A
Sink marks are caused by insufficient holding and wall thickness difference; high-pressure holding and multiple gates are core countermeasures
Injection Molding POE injectionsink markholding pressurewall thickness differencegate design
Q
POE '2079851475616104452 multi-cavity filling imbalance
A
Multi-cavity filling imbalance is caused by runner design; balanced runners and mold flow analysis are key
Injection Molding POE injectionmulti-cavity balancerunner designgate sizemold flow analysis
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