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Kenplas Forum ==> Blow Molding (Machine) ==> Bottle Bottom Eccentricity
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1. Reduce PRE-BLOW Pressure;
2. Increase BLOW-DELAY (PRE-BLOW too early);
3. Increase stretch speed;
4. Adjust the clearance between tip of stretch rod and bottom mold to 1-1.5mm (when STRETCH-END is reached);
5. Wall thickness of preform body is not uniform (radial);
6. Stretch rod doesn''t focus on center of bottom mold (e.g. stretch rod is bent);
7. Reduce heating temperature of preform bottom.
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This forum published since July 03, 2002.
Renewed on June 22, 2005. |
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