Problem & Solution

Practical answers to common plastic material challenges

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Q

POM Printing Ink Loss

A

POM printing requires surface activation plus special ink; after confirming effectiveness, solidify 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

Extrusion & Post POMprintingcoronaink

Q

POM Coating Adhesion

A

POM coating is inherently difficult—choose carefully for important appearance parts; after confirming effectiveness, solidify 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...

Extrusion & Post POMcoatingadhesionsurface energy

Q

POM Fatigue Fracture

A

Snaps are designed and verified by fatigue life; after confirming effectiveness, solidify 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 POMsnapfatiguefillet

Q

POM Insert Cracking

A

Insert parts need triple protection of preheating plus wall thickness plus annealing; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent simila...

Injection Molding POMinsertpreheatingannealing

Q

POM Internal Stress

A

POM stress cracking is addressed by process stress reduction and solvent avoidance; after confirming effectiveness, solidify 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 ...

Processing Machinery POMinternal stressstress crackingsolvent

Q

POM Dimensional Drift

A

Precision part dimensions are based on the post-aging state; after confirming effectiveness, solidify 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

Material Drying POMdimensional driftagingpost-crystallization

Q

POM Silver Streak

A

For POM silver streaks, troubleshoot moisture first then shear; after confirming effectiveness, solidify 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

Material Drying POMsilver streakmoistureshear

Q

POM Bubble

A

Distinguish moisture, entrained air, and shrinkage voids by bubble position and form; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent simila...

Material Drying POMbubblemoisture contentshrinkage void

Q

POM Drool Contamination

A

Drooled material must be cleaned immediately to prevent mixing into parts; after confirming effectiveness, solidify 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

Molds & Tooling POMdroolingoxidized streaksuck-back

Q

POM Black Speck

A

Radical cure of black specks relies on disassembly cleaning and cleaning procedures; after confirming effectiveness, solidify 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...

Processing Machinery POMblack speckcarbonizationdisassembly cleaning

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