Problem & Solution

Practical answers to common plastic material challenges

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Q

PA66 uneven gloss

A

Gloss uniformity relies on the coordination of mold temperature, mold surface, and venting; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent simi...

Molds & Tooling PA66glossmold surfaceventing

Q

PA66 jetting marks

A

Jetting marks are solved from the gate-to-wall relationship and speed curve; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems

Molds & Tooling PA66jetting markgatespeed

Q

PA66 internal shrinkage voids

A

Thick-wall shrinkage voids are guaranteed by feeding channels and holding pressure system; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent simil...

Molds & Tooling PA66shrinkage voidfeedingthick wall

Q

PA66 dimensional out-of-tolerance

A

Dimensional consistency relies on parameter locking plus SPC monitoring; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems

Material Drying PA66dimensional out-of-toleranceSPCshrinkage

Q

PA66 stress whitening

A

Stress whitening indicates insufficient toughness reserve, moisture conditioning and toughening treat the symptom; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting refere...

Material Drying PA66stress whiteningtoughnesstoughening

Q

PA66 internal stress cracking

A

Delayed cracking requires prevention in three aspects: structure, process, and assembly; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar...

Material Drying PA66internal stressdelayed crackingmoisture conditioning

Q

PA66 batch color difference

A

Color difference control requires locking the three links of raw material, metering, and process; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequen...

Processing Machinery PA66color differencemeteringcolor comparison

Q

PA66 yellowing control

A

Yellowing is investigated and temperature reduced segment by segment in the drying section and molding section; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting reference...

Material Drying PA66yellowingthermal oxidationsegmented troubleshooting

Q

PA66 black speck traceability

A

Increasing black specks is a signal of material hiding in equipment, disassembly and cleaning are mandatory; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting reference fo...

Molds & Tooling PA66black speckcarbonizationdisassembly cleaning

Q

PA66 surface scratch

A

Scratches are a draft angle and polishing direction problem, mold repair is fundamental; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar...

Molds & Tooling PA66scratchdraft anglepolishing

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