Extrusion & Post
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TPE extrusion die buildup
Problembeschreibung
Deposits retained at the edge of the TPE extrusion die, lines appear on the product surface
Ursachenanalyse
Causes of TPE die buildup: material dampness, inherent material characteristics, excessive filling oil; deposits periodically fall off and enter the product forming defects; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Lösung
①fully dry the material; ②add external lubricant; ③apply Teflon coating on the die to prevent sticking; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes, so as to locate effective measures
Wichtigste Erkenntnis
TPE die buildup is a dual signal of drying and formulation; Teflon coating is an effective hardware countermeasure; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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