Problema y solución

Respuestas prácticas a los desafíos comunes de los materiales plásticos

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Q

PEEK Stress Whitening and Ejection

A

Stress whitening points to over-packing and uneven ejection; reduce pressure first, then balance ejection; 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 s...

Molds & Tooling stress whiteningholding pressureejectiondemolding

Q

PEEK Burning and Trapped Air Black Spots

A

For high-temperature materials, trapped air means burning; venting and final-stage speed reduction are double insurance; 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 r...

Molds & Tooling burnttrapped airventingblack spot

Q

Uneven Color and Transparency of PEEK Products

A

Uneven color and transparency is a crystallization distribution map; mold temperature balance is the radical cure; 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 referen...

Molds & Tooling uneven colortransparencycrystallinitymold temperature

Q

Insufficient Runner and Gate Dimensions for PEEK

A

Runner >3mm and gate >1mm for PEEK are the official lower limits — when pressure loss is large, measure the dimensions first; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling runner size gate size pressure loss shear

Q

Temperature Control and Maintenance of PEEK Hot Runner

A

PEEK hot runner temperature control at 375-390℃ is delicate work, and drying and dehumidifying before startup cannot be omitted; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling hot runner temperature control gate blockage carbonization

Q

Jump Heating Between Barrel Zones of PEEK

A

PEEK barrel heating must be progressive and gentle — the actually measured melt temperature is the final judge; 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 refer...

Molds & Tooling barrel zoning progressive heating melt temperature plasticization

Q

PEEK Shrinkage Rate and Fiber Orientation Differences

A

PEEK shrinkage is designed in separate tracks by grade, and warpage of filled material relies on the gate to homogenize orientation; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling shrinkage rate fiber orientation warpage mold compensation

Q

Transparent Low-Crystallinity Surface Layer of PEEK

A

A transparent surface layer is a signal of low crystallinity — raise the mold temperature or anneal to make up the surface performance; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as...

Molds & Tooling surface crystallization mold temperature annealing chemical resistance

Q

Mold Temperature Below Tg Forming Amorphous Brittle PEEK Parts

A

The 143℃ mold temperature is the crystalline-state boundary of PEEK, and performance parts should take the upper limit with an oil-type mold temperature controller; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling mold temperature glass transition temperature crystallinity amorphous

Q

Improper Application of Vacuum Venting for PEEK

A

Vacuum venting is an effective means for PEEK trapped-air treatment but requires fine control; timing and channel design determine success or failure; simple add-on installation does not equal correct use.; After confirming effectiveness, solidify the parameters and practices into the work instru...

Molds & Tooling PEEK；vacuum venting；trapped air；timing；venting channel；blockage

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