Problem & Solution

Practical answers to common plastic material challenges

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Q

PVC Dimensional Instability

A

Dimensional consistency relies on process locking plus SPC; 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 problems in the future

Molds & Tooling PVCdimensionSPCholding pressure

Q

PVC Ejector Whitening

A

Ejector whitening relies on balanced ejection and sufficient cooling; 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 problems in the future

Molds & Tooling PVCejector whiteningejector pincooling

Q

PVC Mold Sticking

A

For PVC mold sticking, lower the mold temperature first; 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 problems in the future

Molds & Tooling PVCmold stickingmold temperaturedraft angle

Q

PVC Flash

A

For PVC flash, check clamping and parting line; 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 problems in the future

Molds & Tooling PVCflashclampingparting line

Q

PVC Embrittlement

A

For embrittlement, check degradation first, then internal stress; 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 problems in the future

Processing Machinery PVCembrittlementdegradationimpact

Q

PVC Sink Mark

A

PVC sink marks are controlled by holding pressure and wall thickness design; 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 problems in the future

Processing Machinery PVCsink markholding pressurewall thickness

Q

PVC Warpage

A

For PVC warpage check cooling; for soft material additionally check formulation migration; 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 problems ...

Processing Machinery PVCwarpagecoolingmigration

Q

PVC Flow Mark

A

Flow marks are improved by raising both temperature and speed; 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 problems in the future

Processing Machinery PVCflow markfrontspeed

Q

PVC Weld Line

A

PVC weld lines are strengthened by temperature and overflow; 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 problems in the future

Processing Machinery PVCweld lineoverflow wellstrength

Q

PVC Short Shot

A

PVC short shot relies on coordination of temperature, venting and runner; 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 problems in the future

Molds & Tooling PVCshort shotviscosityrunner

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