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The Rapid Guide to Perfect PET Bottles


This is a troubleshooting guide that should be in every operator’s toolbox or on his/her smartphone or tablet. On 125 pages 31 common defects of PET bottles are analyzed and tips given to solve them. These tips are separated for both single and two-stage stretch blow molding. After each defect an explanation gives more background into why this defect may occur to help with the understanding and further troubleshooting skills. In addition to the 31 defects I also wrote 7 chapters that deal with common issues in either process for further reading and understanding.
You can buy this book as a 4″ x 7″ print version or as as a pdf file that can be loaded onto a smartphone or tablet. In either case it should be handy on the production floor.
The Rapid Guide to Perfect PET Bottles

Here is the table of contents:

Aesthetic issues
Band in bottle body
Base fold
Base rupture
Base thick spot
Blown-out neck finish
Body orange peel
Bottle blow-out during blow
Burst test failure
Cocked Necks
Cracked Gates
Damaged / Deformed Neck Finish
Drop impact failure
Fill level test failure
Flat on parting line
Insufficient Vacuum
Invisible Logo
Leak Test Failure
Neck fold
Oblong bottles problems
Off-Center Gate
Opalescence or haziness
Out of round bottle
Panel Sink
Rocker bottom
Spine in bottle center
Stress cracking failure
Thin base
Thin corners on oblong bottles
Thin shoulder
Top Load failure
Touch Marks (Bottle Body)
Under-blown bottle
Uneven axial distribution
Uneven Heel / base
Uneven wall thickness

Process Guide

Pre-blow pressure control
Fighting viscous heating in Single Stage
Balancing ventilation and preform temperature
How to get best orientation
Lamp setting correlation to bottle geometry
Changing preform temperatures
Output control
How stretch ratios are calculated and natural stretch ratio