Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

Brittleness Caused by Too Low Mold Temperature of PEEK

A

PEEK crystallinity is the mother of performance; products produced with mold temperature below Tg are essentially nonconforming; the DSC cold crystallization peak is direct evidence of insufficient crystallization and should serve as the standard method for dispute determination.

Molds & Tooling PEEK；brittleness；crystallinity；mold temperature；amorphous；DSC

Q

Flash at the Thread of PE Bottle Necks

A

Neck flash = a signal of 'mold fit wear': regularly replacing the cutting edge and wear parts is more economical than post-trimming; the neck precision of sealing parts directly determines whether the cap can lock.

Molds & Tooling PE；'2079851475616104457；bottle neck；flash；mold wear；sealing

Q

PE Blow Molded Container Excessive Shrinkage

A

PE '2079851475616104457 shrinkage = management of 'temperature + blowing energy': do not give the temperature too high, and the blowing must be sufficient, so that the product is shaped in place in the mold; the mold volume must be back-calculated and compensated based on the actual measured shri...

Molds & Tooling PE;'2079851475616104457;shrinkage;mold temperature;blowing pressure;volume

Q

PC Mold Deposit

A

PC mold deposit requires regular cleaning, with venting as the focus; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future

Molds & Tooling mold depositprecipitationcleaningventing

Q

PC Gate Mark Whitening

A

PC gate marks rely on position plus sharp trimming; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future

Molds & Tooling gate markswhiteningtrimmingsubmarine

Q

PC Jetting Marks

A

PC jetting marks rely on the gate wall-impinging arrangement; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future

Molds & Tooling jetting marksgatewall attachmentinitial speed

Q

PC Uneven Gloss

A

For PC gloss difference, check mold temperature uniformity; stress also affects it; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in...

Molds & Tooling uneven glossmold temperaturepolishingstress

Q

PC Mold Release Agent Streaks

A

Avoid mold release agent for PC as much as possible; streaks mostly start from this; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems i...

Molds & Tooling mold release agentstreakssurfacecontamination

Q

PC Glass Fiber Warpage

A

The root of PC glass fiber warpage is orientation, and the gate is the key; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future

Molds & Tooling glass fiber warpageorientationgateshrinkage

Q

PC Ejection Whitening and Cracking

A

For PC ejection whitening, check cooling and ejection; internal stress parts crack more easily; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar...

Molds & Tooling ejection whiteningejector pinscoolingstress

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