Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

PC glass fiber grade temperature

A

PC glass fiber material temperature upper limit and rotation speed reduced, equipment wear-resistant；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence；Include this case in the defect archive as a reference for troubleshooting sim...

Molds & Tooling glass fibermelt temperaturerotation speedwear-resistant

Q

PC recycled material management

A

PC recycled material moisture content is hard to control, prohibited for performance and transparent 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 reference for troubleshooti...

Material Drying recycled materialheat historymoisture contentratio

Q

PC drying equipment selection

A

PC drying needs a dehumidifying dryer as the backstop, hot air ovens are unreliable；After confirming effectiveness, solidify 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 ...

Material Drying dehumidifying dryerdew pointhot air ovenselection

Q

PC multi-stage injection application

A

PC multi-stage injection controls shear, slow entry, stable middle, slow finish；After confirming effectiveness, solidify 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 ...

Injection Molding multi-stage injectionjettingshearburnt

Q

PC holding pressure and sink mark stress

A

PC holding pressure 40-60%, balancing sink marks and stress at both ends；After confirming effectiveness, solidify 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 holding pressuresink markinternal stressratio

Q

PC injection pressure 100-150

A

PC injection 100-150MPa, high viscosity requires high pressure but prevent overpressure；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Injection Molding injection pressureshort shotinternal stressthin wall

Q

PC mold temperature 80-120

A

PC mold temperature 80-120℃, stress parts take the upper limit to prevent cracking；After confirming effectiveness, solidify 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 t...

Molds & Tooling mold temperatureinternal stresscrackingcycle

Q

PC barrel zone temperature

A

PC barrel 270 to 310℃ progressive, nozzle slightly lower to prevent drooling；After confirming effectiveness, solidify 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 barrel zoningprogressivenozzleplasticization

Q

PC melt temperature 280-320 window

A

PC melt temperature 290-310℃ is the norm, 320℃ is the degradation red line；After confirming effectiveness, solidify 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

Material Analysis melt temperaturewindowdegradationyellowing

Q

PC hopper heat preservation to prevent moisture regain

A

PC regains moisture quickly, hopper heat preservation at 120℃ and residence not exceeding 2 hours；After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence；Include this case in the defect archive as a reference for troubleshooting simila...

Material Drying hopper heat preservationmoisture regain120℃residence

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Categorias

Todos os tópicos 11636 Material Drying 1439 Injection Molding 1506 Molding Process 740 Molds & Tooling 1506 Processing Machinery 2025 Extrusion & Post 2239 Blow Molding 315 Thermoforming 141 Material Analysis 1343 Production & Quality 382