Processing Machinery
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HIPS Sheet Surface Gel Particles
Problem Phenomenon
Unplasticized particles appear on the sheet surface.
Cause Analysis
Poor plasticization or insufficient filtration allows unmelted particles to enter the sheet; raw material impurities are also a source.; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
Solution
①Optimize plasticization temperature; ②strengthen filtration; ③clean die head dead corners; ④strengthen raw material inspection.; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Gel particle control relies on plasticization and filtration; high-requirement sheets use finer screens.; 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 similar problems in the future
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