Blow Molding
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HDPE '2079851475616104457 Parison Control
Problem Phenomenon
Blow molded products have uneven wall thickness, locally too thin with insufficient strength, and high rejection rate
Cause Analysis
Parison extrusion thickness distribution determines wall thickness after '2079851475616104457; improper parison program control makes axial thickness uneven; excessive blow-up ratio causes local over-stretching and thinning; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based solely on experience
Solution
①Optimize parison program control for axial thickness distribution; ②design blow-up ratio according to material and product; ③pre-thicken the parison in locally thin areas; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
The source of '2079851475616104457 wall thickness management lies in the parison; program control plus blow-up ratio design distributes thickness to where it is needed; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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