How to Address Uneven Wall Thickness in Stretch-Blow Molding

Brandau, Ottmar
December 2014
Plastics Technology;Dec2014, Vol. 60 Issue 12, p32
Trade Publication
The article addresses uneven wall thickness in polyethylene terephthalate (PET) bottle in stretch-blow molding. It discusses the self-leveling trait of preform PET as it applies to stretching. It offers problems and solutions to uneven wall thickness including off-center gate, uneven heating or cooling in processing and small stretch ratios.


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