No leakage of liquid after capping PET bottle is the basic quality expectation of customer. The cap leakage attributes to deformation of bottle neck during blowing. The root cause is the preform neck is not guard around 360 degree while preforms getting heated in IR oven. Therefore the temperature of neck portion rises and around 5% rejection are noticed due to this defect.

The preform’s, while heated in IR oven, individually neck portion is guarded around 360 degree. Chilled water is circulated around neck. This system ensures the 100% defect free bottle production.

Significance of this system: It is necessity to use the lowest possible weight preform for blowing bottle. So the usages of smaller, thin & light weight neck is necessary hence the neck cooling system plays a major role in bottle weight reduction drive.