Problem & Solution

Practical answers to common plastic material challenges

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Q

POM injection molded product delamination

A

Delamination = contamination.

Extrusion & Post POM；delamination；contamination；release agent

Q

PMMA Solvent Stress Cracking

A

PMMA solvent cracking is the superposition of stress and chemistry; chemical list control and sheet material source control run in parallel; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post PMMA;solvent cracking;alcohol;screen printing;recycled material

Q

PMMA Extruded Sheet High Internal Stress

A

The essential difference between cast and extruded sheets lies in stress level; clarify sheet type during material selection; annealing extruded sheets before machining is an iron rule; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recu...

Extrusion & Post PMMA;extruded sheet;cast sheet;internal stress;annealing

Q

PMMA CNC Cracking

A

PMMA CNC cracking is the superposition of stress and heat; sharp tools, layered cutting, and cast sheet annealing are applied together; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post PMMA;CNC;cracking;tools;layered cutting

Q

PMMA Surface Hardening

A

PMMA's scratch-resistance shortcoming is made up for by hardening coating; the improvement from 2H to 4-8H is standard treatment for panels; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post PMMA;hardening;coating;2H;scratch resistance

Q

PMMA Extrusion Temperature Profile

A

The extrusion temperature profile determines the melt quality of the sheet; 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 similar future problems.

Extrusion & Post PMMA extrusion temperature sheet die head

Q

PMMA Annealing Temperature Upper Limit

A

Annealing temperature must be lower than the heat deflection temperature with margin; 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 similar future problems.

Extrusion & Post PMMA annealing deformation support

Q

PMMA Annealing Specification

A

Annealing is the standard post-treatment for PMMA to eliminate internal stress; 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 similar future problems.

Extrusion & Post PMMA annealing internal stress slow cooling

Q

PMMA Extrusion Temperature 180-250℃

A

PMMA extrusion equipment selection has clear specifications; screw parameter matching is the hardware basis for stable sheet quality; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.

Extrusion & Post PMMA; extrusion; 180-250℃; screw; venting

Q

PMMA Annealing 70-90℃

A

Annealing is a pre-process for PMMA post-processing; annealing is mandatory before bonding and screen printing, and 70-90℃×4h is the standard combination; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.

Extrusion & Post PMMA; annealing; 70-90℃; 4 hours; stress

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