Problem & Solution

Practical answers to common plastic material challenges

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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 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 Nozzle Leakage

A

For leakage, check sealing and residual pressure; 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 similar problems in the future

Molds & Tooling TPUnozzleleakagesealing

Q

TPU Flow Mark Jetting

A

TPU flow mark treatment prioritizes temperature; gate design and holding pressure management are supporting means; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling TPU; flow mark; melting; gate; holding pressure

Q

TPU Weld Line Strength

A

TPU weld line treatment prioritizes temperature, relocates position, and assists with venting; stressed areas must avoid weld lines; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling TPU; weld line; meld line; convergence; venting

Q

TPU Crack Stress

A

For TPU cracking, check stress concentration and demolding; 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 similar problems in the future

Molds & Tooling TPUcrackstressgate

Q

TPU Shrinkage Rate 0.4-1.4%

A

TPU's low shrinkage is a dimensional advantage; but the wide 0.4-1.4% range requires precise margin according to grade; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling TPU; shrinkage rate; 0.4-1.4%; hardness; wall thickness

Q

TPU Hardness Range

A

TPU's wide hardness range is where design flexibility lies; but each hardness is an independent set of process parameters; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling TPU; hardness; Shore A60-D85; shrinkage; mold trial

Q

TPU Mold Temperature Controller

A

Mold temperature stability relies on equipment maintenance; 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 similar problems in the future

Molds & Tooling TPUmold temperature controllermaintenancewater channels

Q

TPU Mold Temperature Uniformity

A

TPU performance uniformity is guaranteed by mold temperature uniformity; 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 similar problems in the future

Molds & Tooling TPUmold temperature uniformityhardnesswater channels

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