Molds & Tooling
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HDPE blow-molded bottle mouth deformation
Problem Phenomenon
The bottle mouth thread of the blow-molded bottle is deformed or fits poorly with the cap, and the sealing test leaks.
Cause Analysis
The bottle mouth is squeezed and shaped when the mold closes; high temperature at the bottle mouth area of the mold or improper mold closing timing will cause deformation; incomplete flash trimming also affects the fit.; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
①Control the mold temperature at the bottle mouth area; ②optimize the timing of mold closing and blowing; ③standardize trimming to ensure the integrity of the bottle mouth; ④inspect the bottle mouth dimensions.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Bottle mouth quality determines sealing reliability; bottle mouth temperature control and timing are fine adjustment points of the blow '2079851475616104453.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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