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TPU Burrs and Flash

TPU burr troubleshooting proceeds from easy to difficult; five routes progress stepwise: raw material, pressure, clamping, mold, equipment; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Injection Molding TPU; burr; flash; clamping force; mold wear

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TPU Injection Speed Control

TPU speed strategy is stability-first; the balance between shear degradation and flow marks relies on medium-low speed plus temperature compensation; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Injection Molding TPU; injection speed; medium-low speed; shear; flow mark

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TPU Injection Pressure Grading

TPU pressure setting should be tailored to each part; high pressure buys filling, but also brings flash and stress risks; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Injection Molding TPU; injection pressure; grading; thin wall; flash

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TPU Overmolding Injection

Overmolding bonding strength relies on surface and preheating; 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

Injection Molding TPUovermoldingmetalbonding

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TPU narrow processing window

The narrow window of TPU is its process difficulty; equipment precision and parameter discipline are the prerequisites for stable production; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Injection Molding TPU；narrow window；temperature control；±3℃；equipment

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TPU nozzle drool

Drooling both wastes raw material and introduces cold material defects; temperature and back pressure adjustment combined with an anti-drooling structure can solve it; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Injection Molding TPU；nozzle；drooling；temperature；back pressure；anti-drooling

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TPU under-injection short shot

TPU short shot is troubleshooted along the three routes of feeding, temperature, and pressure; high-viscosity grades require higher filling energy; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Injection Molding TPU；short shot；under-injection；melt temperature；injection pressure；feeding

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TPU pockmarks and shrinkage wrinkles

Pockmarks and shrinkage wrinkles are the appearance of imbalanced feeding compensation and temperature management; troubleshoot in the order of pressure, temperature, feeding, and gate; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Injection Molding TPU；pockmark；shrinkage wrinkle；injection pressure；mold temperature；gate

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TPU product dents and sink marks

TPU sink marks are adjusted along the two lines of feeding compensation and temperature; structural uniformity is the fundamental solution for thick-walled parts; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Injection Molding TPU；dent；sink mark；feeding compensation；injection pressure；venting

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TPU burrs and flash

TPU low-viscosity melt is sensitive to parting line precision; dual reduction of temperature and pressure usually takes effect quickly; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Injection Molding TPU；burr；flash；injection pressure；clamping force；temperature

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Tüm Konular 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

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