Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

TPU Hardness Deviation

A

Hardness consistency relies on full-chain control; 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 later

Material Drying TPU hardness deviation first article

Q

TPU Shrinkage and Deformation

A

TPU dimensions must consider elastic recovery characteristics; 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 later

Molds & Tooling TPU shrinkage elastic recovery aging

Q

TPU Extrusion Waves

A

For wavy lines, check temperature and die uniformity; 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 later

Extrusion & Post TPU extrusion waves die

Q

TPU Flash

A

For TPU flash, check clamping and pressure; 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 later

Molds & Tooling TPU flash clamping parting line

Q

TPU Silver Streaks from Moisture

A

Ninety percent of TPU silver streaks are moisture problems; 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 later

Material Drying TPU silver streaks moisture hydrolysis

Q

TPU First Article Verification

A

TPU first article must include moisture content; qualified appearance does not mean qualified material state; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Material Drying TPU; first article verification; moisture content; material change; impact

Q

TPU Demolding Difficulty

A

TPU demolding should make good use of its elasticity; large-area ejection plus elastic undercuts is the hard skill for soft materials; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling TPU; demolding; undercut; ejector pin; texture

Q

TPU Color Masterbatch Dispersion

A

For TPU coloring, dry first then disperse; premixing and drying plus TPU carrier can prevent color streaks and color difference; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Material Drying TPU; color masterbatch; dispersion; premixing; drying

Q

TPU Regrind Use

A

TPU regrind management gives equal weight to ratio and drying; the 20% upper limit plus full drying ensures stable performance; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Material Drying TPU; regrind; 20%; drying; performance

Q

TPU Extrusion Degradation

A

TPU extrusion degradation management runs three lines in parallel: temperature, residence, and dead corners; aromatic grades are especially sensitive; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Material Drying TPU; extrusion; degradation; residence; dead corners

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