Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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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

PET shear rate and brittleness

A

PET shear embrittlement is a hidden defect; 3-5 second shot time is the empirical upper limit, and impact sampling is the fallback verification; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Injection Molding PET;shear rate;embrittlement;3-5 seconds;impact

Q

PET pressure-adjusted flow characteristics

A

PET is a pressure-sensitive material; adjusting pressure rather than temperature is the basic logic of '2079851475616104452 operation, and raising temperature to adjust flow is a common misconception; after confirming effectiveness, fix the parameters and practices into the work instruction to pr...

Injection Molding PET;pressure sensitivity;fluidity;injection pressure;misconception

Q

PET recycled '2079851475616104452

A

rPET '2079851475616104452 manages performance by IV value grading; 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 PETrPET'2079851475616104452IV value

Q

PET injection machine selection

A

PET has specific requirements for the '2079851475616104452 machine; the number of temperature control zones and the shot weight ratio are the two major verification items for equipment matching; after confirming effectiveness, solidify the parameters and practices into the work instruction to pre...

Injection Molding PET；injection machine selection；temperature control zones；shot weight；clamping force

Q

PET thermocouple calibration

A

Unified temperature measurement is the prerequisite for multi-machine consistency; 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 p...

Injection Molding PETthermocouplecalibrationconsistency

Q

PET mold temperature 70-80℃

A

PET mold temperature is managed in stages; high temperature in injection ensures crystallization and low temperature in cooling ensures the cycle, and the two-stage combination is the standard practice for engineering parts; after confirming effectiveness, solidify the parameters and practices in...

Injection Molding PET；mold temperature；70-80℃；crystallization；staged

Q

PET bottle seal leakage

A

Sealing performance is already determined in the preform injection stage; control of bottle finish dimensions and white spots is the key to leak prevention, and sampling inspection of cap-on sealing should be performed before filling.; after confirming effectiveness, solidify the parameters and p...

Injection Molding PET；bottle；leakage；sealing；bottle finish；dimensions

Q

PET Preform Gate Stringing

A

Gate stringing directly affects bottle bottom strength and may cause leakage; temperature control and cooling matching are the key, stringing preforms should be rejected and must not flow into the blowing process with defects.

Injection Molding PET; preform; gate; stringing; bottle bottom; leakage

Q

PET Preform Neck White Spot Crystallization

A

Neck white spots reflect improper filling speed or temperature management; the neck no longer deforms in the blowing process, and defects from the injection stage are retained as-is, so they must be controlled at the source.

Injection Molding PET; preform; bottle neck; white spot; crystallization; injection speed

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