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Practical answers to common plastic material challenges

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POM product bubbles

Material Drying POM；bubbles；moisture；decomposition gas；vacuum voids；venting

POM product stress cracking

Cracking = stress + medium.

Molding Process POM；stress cracking；internal stress；medium

POM product poor surface gloss

Gloss = clean mold surface + mold temperature.

Molds & Tooling POM；gloss；mold fouling；mold temperature

POM product melt temperature actual measurement deviation

POM melt temperature must be actually measured.

Processing Machinery POM；melt temperature；shear heat；back pressure

POM nozzle freezing

Nozzle blockage = fast freezing.

Processing Machinery POM；nozzle；freezing；heater band

POM nozzle drooling

Drooling = nozzle temperature + suck-back.

Processing Machinery POM；drooling；nozzle；suck-back

POM '2079851475616104452 ejector whitening

Ejector whitening = concentrated stress.

Injection Molding POM；ejector whitening；gripping force；ejection

POM regrind usage problem

POM regrind = the less used the better.

Molding Process POM；regrind；degradation；formaldehyde；thermal history

POM and PVC cross-contamination risk

POM×PVC = dangerous combination, material change must be thorough.

Processing Machinery POM；PVC；cross-contamination；decomposition；material change

POM product brittle cracking

Brittle cracking = decomposition or stress, distinguish first by smelling the odor.

Material Analysis POM；brittle cracking；decomposition；stress concentration；regrind

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