Problema y solución

Respuestas prácticas a los desafíos comunes de los materiales plásticos

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Q

COC Medical Field

A

The high hygiene and compatibility of COC medical applications are the core; verification ensures safety; compliance ensures market access.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery COC; medical field; biocompatibility; sterilization; transparency; compliance

Q

COC Rigidity and Heat Resistance

A

COC rigidity and heat resistance are the basis of structural applications; verification ensures performance; assessment ensures long-term reliability.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery COC; rigidity; heat resistance; structure; dimensional stability; reliability

Q

COC Production Equipment Corrosion Misjudgment

A

COC equipment wear traceability must first determine the mechanism and then the countermeasure; the solutions for abrasive wear and corrosion are completely different; analytical means avoid empirical misjudgment.; After confirming effectiveness, fix the parameters and practices into the work ins...

Processing Machinery COC; equipment wear; corrosion; misjudgment; abrasive; analysis

Q

COC Grade Switchover Cross Contamination

A

The core of COC grade switchover is temperature difference management; the material change direction determines the risk type; standardized cleaning processes avoid human arbitrariness.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery COC; grade switchover; contamination; Tg; purging; cleaning

Q

COC Improper Screw Speed Poor Plasticizing

A

COC plasticizing parameters have a clear official window; screw speed and back pressure are adjusted in linkage; actual melt measurement is the final basis for judging the plasticizing state.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent re...

Processing Machinery COC; screw speed; plasticizing; unmelted particles; shear; window

Q

COC Residence Time Too Long Degradation

A

The 15-minute residence red line is a hard constraint of the COC process; shutdown cooling operation must be written into the work instruction; the weight matching of machine and product is often overlooked but is the main cause of degradation.

Processing Machinery COC; residence time; degradation; shutdown; 15 minutes; purging

Q

COC Melt Temperature Too High Yellowing

A

COC yellowing is the signal of dual control failure of temperature and residence time; each grade has different temperature upper limit and must be confirmed one by one; optical parts have zero tolerance for yellowing, temperature management starts from actual barrel measurement.

Processing Machinery COC; yellowing; melt temperature; residence time; thermal oxidation; grade

Q

ASA Low-Temperature Embrittlement

A

ASA low-temperature toughness has limits, severe cold parts verify and toughen; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems

Processing Machinery low-temperature embrittlement impact toughening fillet

Q

ASA Insufficient Heat Deformation Resistance

A

ASA heat deflection 88-101℃, leave margin for use temperature; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems

Processing Machinery heat deflection HDT high temperature margin

Q

ASA Color Difference and Color Matching

A

ASA color difference controls thermal history and dispersion, outdoor parts look at Delta E; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent simi...

Processing Machinery color difference color masterbatch thermal history Delta E

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