Problem & Solution

Practical answers to common plastic material challenges

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Q

PBT gate design

A

Gate design affects fiber orientation and stress.; 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 PBT; gate; design; shear; stress; orientation

Q

PBT mold temperature selection

A

Mold temperature affects PBT crystallization and performance; requirements determine the range.; 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 simila...

Molds & Tooling PBT; mold temperature; crystallization; performance; cycle; selection

Q

PBT hot runner management

A

Hot runner management is PBT quality assurance.; 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 PBT; hot runner; temperature; dead corner; cleaning; management

Q

PBT product air trap burning

A

The air trap position is where vents should be added.; 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 PBT; air trap; burnt; venting; end; speed

Q

PBT product jetting marks

A

Jetting marks are controlled by the speed curve.; 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 PBT; jetting mark; speed; gate; multi-stage injection; filling

Q

PBT product poor surface gloss

A

Gloss relies on mold temperature and mold surface management.; 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 PBT; gloss; mold temperature; polishing; replication; speed

Q

PBT product mold sticking

A

Solve mold sticking from both the gripping and structure ends.; 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 PBT; mold sticking; demolding; draft angle; polishing; mold temperature

Q

PBT product black specks

A

Black specks point to equipment cleanliness; regular machine cleaning is institutionalized.; 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 pr...

Molds & Tooling PBT; black speck; carbonization; cleaning; hot runner; contamination

Q

PBT product warpage (uneven cooling)

A

Uneven cooling is the main cause of warpage of crystalline materials; water circuit balance is the fundamental solution.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PBT; warpage; cooling; water circuit; crystallization; temperature difference

Q

PBT product ejector whitening

A

Ejector whitening is a local stress signal; ejection system optimization is the standard countermeasure.; 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 f...

Molds & Tooling PBT; ejector whitening; ejection; stress; cooling; draft angle

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