Problema y solución

Respuestas prácticas a los desafíos comunes de los materiales plásticos

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Q

PLA product flash

A

Flash distinguishes between clamping and wear causes.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future

Injection Molding PLA;flash;clamping force;parting line;pressure;wear

Q

PLA product sink marks

A

Sink marks follow the feeding mechanism.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future

Processing Machinery PLA;sink mark;holding pressure;wall thickness;gate;feeding

Q

PLA product warpage

A

PLA warpage must be managed from both cooling and crystallization ends.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future

Molds & Tooling PLA;warpage;cooling;crystallization;mold temperature;holding pressure

Q

PLA '2079851475616104452 short shot

A

PLA short shots are improved by temperature and grade; pay attention to the temperature rise upper limit to prevent degradation.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a referenc...

Injection Molding PLA;short shot;fluidity;temperature;gate;grade

Q

PLA narrow processing window fluctuations

A

Narrow-window materials rely on refined management; process discipline is more important than machine adjustment skills.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Material Drying PLA;processing window;fluctuation;temperature control;process card;consistency

Q

PLA insufficient heat resistance and deformation

A

PLA heat resistance relies on increasing crystallinity; heat-set crystallization (CPLA) can significantly increase the heat resistance temperature.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery PLA;heat resistance;deformation;glass transition temperature;crystallization;heat setting

Q

PLA slow crystallization rate and long molding cycle

A

PLA slow crystallization is a dual bottleneck of efficiency and performance; nucleating agents plus hot mold setting are the industry standard combination.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PLA;crystallization;nucleating agent;mold temperature;setting;cycle

Q

PLA products are very brittle and easy to break

A

Brittleness is PLA's most prominent performance shortcoming; blending and toughening is the mainstream solution, and compatibilizers can significantly increase elongation at break.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery PLA;brittleness;fracture;toughening;blending;compatibilizer

Q

PLA thermal degradation yellowing

A

PLA's thermal degradation threshold is lower than conventional plastics; low temperature and short time are the basic principles of its processing.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery PLA;thermal degradation;yellowing;temperature;residence time;shear

Q

PLA insufficient drying and hydrolysis

A

PLA moisture sensitivity runs through the entire storage and processing process; hydrolysis is irreversible, and drying is the only means to protect molecular weight.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Material Drying PLA;drying;hydrolysis;moisture absorption;molecular weight;bubble

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