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Problem & Solution

Practical answers to common plastic material challenges

11636 questions
Q
POE extrusion film longitudinal streaks
Q
POE film blocking, difficult delamination
Q
POE extrusion profile bending deformation
A
Profile bending is caused by uneven cooling and uneven flow velocity; uniformization and alignment are the solution key
Extrusion & Post POE extrusionbending deformationuniform coolinguniform flow velocitysizing sleeve
Q
POE '2079851475616104452 severe flash
A
Flash is caused by high-pressure injection and mold gap; reducing pressure and improving mold fitting are key
Injection Molding POE injectionflashclamping forceparting lineinjection pressure
Q
POE extrusion film thickness uniformity poor
A
Film thickness uniformity requires coordinated optimization from three aspects: die design, gap adjustment and cooling
Extrusion & Post POE filmthickness uniformitydie designdie swellair ring cooling
Q
POE film heat shrinkage too large
A
Film heat shrinkage is caused by orientation freezing; reducing draw ratio and annealing treatment are key
Extrusion & Post POE filmheat shrinkageorientation releaseannealing treatmentbiaxial stretching
Q
POE extrusion dimensional instability
A
Extrusion dimensional stability depends on feeding accuracy, temperature control and haul-off synchronization
Extrusion & Post POE extrusiondimensional stabilityfeeding controltemperature PIDhaul-off synchronization
Q
POE '2079851475616104452 warpage deformation
A
Warpage is caused by shrinkage difference and orientation stress; uniform mold temperature and holding pressure are key
Injection Molding POE injectionwarpageshrinkageholding pressureannealing treatment
Q
POE '2079851475616104452 gate freezing too early
A
Premature gate freezing is caused by small gate and low temperature; enlarging the gate and raising temperature are the fundamental measures
Injection Molding POE injectiongate freezingholding pressure transmissiongate sizemold temperature
Q
POE '2079851475616104452 mold venting burnt
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