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일반적인 플라스틱 재료 문제에 대한 실질적인 답변

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Q

POM residence time red line

A

Residence time and temperature jointly determine POM's thermal fate; 20 minutes is the general upper limit at '2079851475616104452 temperature, and purging is required upon interruption; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery POM；residence time；20 minutes；heat sensitivity；decomposition

Q

Color mixing caused by incomplete POM barrel cleaning

A

Stubborn color mixing points to material hidden in mechanical dead corners; disassemble and clean when necessary, and rely on standardized cleaning procedures daily to control material accumulation in dead corners.；After confirming effectiveness, fix the parameters and practices into the work ins...

Processing Machinery POM；cleaning；color mixing；dead corner；screw；material change

Q

Control of POM's narrow processing temperature window

A

Narrow-window materials have high requirements for equipment consistency; using the measured melt temperature rather than the set value as the unified benchmark across machines is the key practice for stable quality.；After confirming effectiveness, fix the parameters and practices into the work i...

Processing Machinery POM；temperature window；temperature control accuracy；machine difference；calibration

Q

Coexisting dents and vacuum bubbles in POM products

A

The combination of sink mark plus vacuum bubble strongly indicates a structural wall thickness problem; design modification is fundamental, and process adjustment can only partially alleviate it.；After confirming effectiveness, fix the parameters and practices into the work instruction to prevent...

Processing Machinery POM；sink mark；vacuum bubble；wall thickness；coring out；holding pressure

Q

POM product chemical resistance decline

A

Chemical resistance failure is often related to the superposition of internal stress; mild processing technology and fillet design can maximize retention of POM's chemical resistance advantages.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent...

Processing Machinery POM；chemical resistance；stress cracking；medium；internal stress；verification

Q

POM glass fiber reinforced aggravated warpage

A

The core of reinforced POM warpage is fiber orientation anisotropy; gate design and mold temperature are the main means, and severe cases need to be solved at the material level.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery POM；glass fiber reinforcement；warpage；orientation；anisotropy；gate

Q

POM regrind blending performance degradation

A

The thermal degradation cumulative effect of POM regrind is obvious; ratio control and classification management are the bottom line, and regrind should be used cautiously in stressed parts and precision parts.; after confirming effectiveness, fix the parameters and practices into the work instru...

Processing Machinery POM；regrind；degradation；embrittlement；ratio；management

Q

POM black speck outbreak at startup after shutdown

A

Shutdown management is the key link in POM black speck control; standardized operation of cleaning before shutdown and lowering heat preservation can avoid batch scrapping at each startup.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recur...

Processing Machinery POM；shutdown；startup；black specks；carbonization；cleaning

Q

POM formaldehyde odor exceeding standard in workshop

A

Formaldehyde is an occupational health risk in POM processing; temperature red line plus shutdown cleaning plus ventilation testing constitute a complete gas protection system.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery POM；formaldehyde；odor；ventilation；occupational health；safety

Q

POM thick-walled part internal voids

A

Thick-wall voids are structural defects; coring-out design is the most effective countermeasure, and process means have limited feeding capability for ultra-thick sections.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery POM；voids；thick wall；feeding；coring out；structural design

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