Problem & Solution

Practical answers to common plastic material challenges

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Q

TPE Flash

A

Soft TPE has high requirements for clamping and parting line precision; pressure control is the key.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Injection Molding TPE;flash;clamping force;injection pressure;parting line;viscosity

Q

TPE Short Shot

A

Troubleshoot short shot by pressure, temperature and grade flowability; hardness and flowability must match the product.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Injection Molding TPE;short shot;pressure;temperature;flowability;hardness

Q

TPE Silver Streak

A

Silver streak morphology is the key to cause judgment; check drying for U-shape, air for scattered, degradation for shiny; variable-by-variable verification locates the fastest.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Material Drying TPE;silver streak;moisture;air;degradation;cause judgment

Q

TPE Delamination (Excessive Release Agent)

A

Excessive release agent is a hidden cause of delamination; do not use it if possible, and control the amount if used.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post TPE;delamination;release agent;excessive;cavity;isolation

Q

TPE Delamination (Moisture Type)

A

Moisture-type delamination and silver streaks share the same source; drying verification is the first troubleshooting action.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshoo...

Material Drying TPE;delamination;moisture;drying;silver streak;damp

Q

TPE Delamination (Material Contamination)

A

Delamination mostly originates from material contamination; clean management and standardized material change are the root of prevention.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post TPE;delamination;contamination;material change;cleaning;recycled material

Q

TPE Weld Line

A

TPE weld line strength management is the same as other materials; temperature and gate are the main means.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery TPE;weld line;strength;gate;temperature;convergence

Q

TPE Burnt

A

Burning is a signal of overheating and trapped air; troubleshoot from the three aspects of temperature, residence time and venting.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling TPE;burnt;material temperature;residence;venting;carbonization

Q

TPE Bubbles

A

For TPE bubbles, check the three lines of moisture, venting and volatiles; drying and venting are the main countermeasures.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Material Drying TPE;bubble;drying;venting;injection pressure;volatiles

Q

TPE Oil Additive Exudation

A

SEBS-based TPE most fears oil exudation caused by excessive temperature; this forms a sharp contrast with TPU's shear sensitivity.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery TPE;SEBS;oil exudation;temperature;additive;formulation

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