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Problem & Solution

Practical answers to common plastic material challenges

1506 questions
Q
MP severe internal stress concentration
A
internal stress is caused by fast injection and uneven cooling; reducing speed, uniform cooling and annealing are key
Injection Molding MP internal stress orientation stress annealing uniform cooling
Q
MP '2079851475616104452 cold slug marks
A
cold slug marks are caused by solidified residue in the nozzle; raising nozzle temperature and cold slug well design are key
Injection Molding MP injection cold slug mark nozzle temperature cold slug well injection pressure
Q
MP '2079851475616104452 flow marks
A
Q
MP '2079851475616104452 sink marks
Q
MP '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 MP injection multi-cavity balance runner design gate size mold flow analysis
Q
MP injection molded product ejector whitening
A
Q
MP mixed with color masterbatch uneven color
A
color masterbatch carrier matching and full dispersion are key to color uniformity
Injection Molding MP coloring color masterbatch carrier compatibility pigment dispersion color streaks
Q
MP injection molded products have oil spots
A
oil spots are caused by external sources of release agent and lubricant; reducing release agent and sealing mold lubrication are key
Injection Molding MP injection oil spots mold release agent lubricant exudation mold sealing
Q
MP '2079851475616104452 insufficient flow length ratio
A
insufficient flow length ratio is caused by MP high viscosity; high temperature, high pressure and large gate are key
Injection Molding MP injection flow length ratio melt viscosity injection temperature flow aid
Q
MP '2079851475616104452 low weld line strength
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