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Practical answers to common plastic material challenges

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Q

TPU Mold Temperature Management

A

TPU mold temperature is set according to hardness and surface requirements; 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 temperaturemold stickinggloss

Q

TPU Hot Runner Risk

A

Preventing dead corners in TPU hot runners is an ironclad design rule; 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 TPUhot runnerdead cornerburnt spot

Q

TPU Mold Temperature 20-70°C

A

TPU mold temperature is the balance between surface and stress; fine-tune within the 20-70°C range according to hardness and appearance requirements; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling TPU; mold temperature; 20-70°C; surface; stress

Q

TPU nozzle drooling management

A

TPU drooling treatment starts from the three lines of temperature, back pressure, and suck-back; the anti-drooling nozzle is the radical solution for high-end parts; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling TPU；nozzle；drooling；suck-back；anti-drooling

Q

TPU product microbial attack

A

Microbial attack is a specific environmental risk; material selection can fundamentally solve it; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar pr...

Molds & Tooling TPU；microbial；attack；polyether-type；environment；selection

Q

TPU product cold slug marks

A

Cold slug marks rely on cold slug wells for interception; nozzle temperature management is a preventive means; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference f...

Molds & Tooling TPU；cold slug mark；nozzle；cold slug well；temperature；gate

Q

TPU product air traps

A

The air trap position is where vents should be added; special attention must be paid to venting for high-speed filling of elastomers; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling TPU；air trap；burnt；venting；end；speed

Q

TPU product dimension instability

A

TPU dimension judgment must allow sufficient aging time; dimensional management of elastic materials relies more on process stability; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling TPU；dimension；stability；aging；SPC；batch

Q

TPU product warpage

A

TPU warpage should be addressed from cooling and holding pressure; elastomer deformation is also affected by stress release after demolding; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling TPU；warpage；cooling；holding pressure；stress；gate

Q

TPU multi-hardness material switching

A

TPU grade switching requires re-calibration of the process; hardness is the core variable affecting processability; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling TPU；hardness；material change；temperature window；process card；cleaning

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