Problema y solución

Respuestas prácticas a los desafíos comunes de los materiales plásticos

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Q

Trapped gas burning of PP products

A

The location of trapped gas burning is the point to add venting; venting design for thin-wall high-speed parts should be considered in advance.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PP; trapped gas; burning; venting; end; injection speed

Q

Parting line wear from flash of PP products

A

Progressive flash indicates mold wear; repair the mold in time to avoid batch defects.; 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 investigating similar problems ...

Molds & Tooling PP; flash; parting line; wear; clamping force; mold repair

Q

Mold sticking and scratching of PP products

A

Mold sticking is solved from both the gripping force and the demolding structure; draft angle and polishing are the design guarantee.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PP; mold sticking; scratching; demolding; draft angle; polishing

Q

Orange peel on the surface of PP products

A

Orange peel is a manifestation of poor replication; increasing temperature and speed to improve replication ability can improve it.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Injection Molding PP; orange peel; surface; mold temperature; replication; polishing

Q

Improper temperature gradient in PP '2079851475616104452

A

The temperature gradient is the basic setting of plasticization quality; the actually measured melt temperature is more reliable than the displayed setting.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Injection Molding PP; temperature gradient; plasticization; degradation; melt temperature; calibration

Q

Improper matching of PP '2079851475616104452 machine

A

Machine matching is the premise of stable production; quality problems beyond the reasonable utilization range should not be endured by forcing machine adjustments.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Injection Molding PP; '2079851475616104452 machine; matching; shot volume; clamping force; stability

Q

Embrittlement from PP regrind blending

A

The accumulated degradation of PP regrind directly affects toughness; ratio control and performance verification are the bottom line.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Processing Machinery PP; regrind; embrittlement; degradation; impact; ratio

Q

Shrinkage prediction of PP '2079851475616104452

A

Shrinkage prediction moves from experience to data-based methods; mold flow analysis plus actual measurement feedback can greatly reduce the number of mold corrections.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Injection Molding PP; shrinkage; prediction; CAE; regression; mold correction

Q

Deformation aging out-of-tolerance of PP injection molded parts

A

Seasonal fluctuation must be eliminated by constant temperature control; SPC can detect dimensional drift trends early.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Injection Molding PP; dimensions; season; mold temperature; SPC; crystallization

Q

Melt fracture of PP injection molded parts

A

PP melt fracture is mostly seen with high-speed filling through small gates; coordinated adjustment of temperature, gate, and speed can eliminate it.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence

Injection Molding PP; melt fracture; gate; shear; temperature; speed

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