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Practical answers to common plastic material challenges

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Q

PA6 '2079851475616104452 Metering Fluctuation

A

Stable PA6 metering = 'check ring health': low-viscosity nylon has extremely high requirements for check ring sealing; cushion fluctuation is the most intuitive alarm; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence.

Injection Molding PA6; metering fluctuation; check ring; cushion

Q

PA6 '2079851475616104452 Mold Sticking

A

PA6 mold sticking = 'gripping force': reduce pressure and temperature to reduce gripping, draft angle and polishing to reduce resistance; the demolding resistance of crystalline nylon must be managed with emphasis; after confirming effectiveness, solidify the parameters and practices into the wor...

Injection Molding PA6; mold sticking; holding pressure; draft angle; shrinkage

Q

PA6 '2079851475616104452 Ejection Whitening

A

PA6 ejection whitening = 'concentrated stress': disperse ejection force and give sufficient cooling; crystalline nylon has large gripping force, and the ejection system must leave sufficient margin; after confirming effectiveness, solidify the parameters and practices into the work instruction to...

Injection Molding PA6; ejection whitening; gripping force; cooling; ejection

Q

PA6 '2079851475616104452 Jetting Marks

A

PA6 jetting marks = 'hit the wall first after entering': gate direction cooperates with the speed curve; let the front spread against the wall, and the snake-shaped marks disappear; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence.

Injection Molding PA6; jetting marks; gate; injection speed

Q

PA6 Short Shot

A

PA6 short shot = a race against freezing speed.

Injection Molding PA6; short shot; fast solidification; injection speed; mold temperature

Q

PA6 Flash

A

Low-viscosity nylon flash = a war between pressure and clearance.

Injection Molding PA6; flash; low viscosity; clamping; parting line

Q

PA12 Warpage Deformation Control

A

For warpage, first check cooling and wall thickness uniformity, then reduce pressure and speed to reduce internal 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 reference f...

Injection Molding warpageuneven coolingwall thicknessover-filling

Q

PA12 Discoloration and Thermal Degradation

A

Discoloration is a thermal degradation alarm; lower temperature, lower speed, enlarge the gate, and vent trapped air together; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a refere...

Injection Molding discolorationthermal degradationshearventing

Q

PA12 Insufficient Filling Systematic Troubleshooting

A

Troubleshoot short shots in the order of six elements, and check ring wear is the most easily overlooked; 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 troubleshooti...

Injection Molding insufficient fillingshort shottroubleshooting ordercheck ring

Q

PA12 Low-viscosity Grade Molding Precision

A

Low-viscosity PA12 equipped with a needle valve nozzle is the guarantee of precision, and open nozzles are hardly competent; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Injection Molding low viscosityneedle valve nozzledroolingmolding precision

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