A new type of plastic bottling technology allows companies to package hot-fill products in containers with smooth rather than ribbed or panelled walls. This new design will help PET to participate in this packaging field where glass bottle is used so far due to limitation of the plastic bottles.

Previously plastic bottles used for hot-filling beyond 70 degree C needed ribs or panels in the sidewall to absorb the distortion that occurs as the beverage cools to room temperature.

Amcor has developed new type of PET bottles called “PowerFlex” bottle by designing a special base to absorb the vacuum created by cooling liquids. A diaphragm within the base draws upward as the liquid cools. The inverted cone shaped diaphragm deflects upward as the vacuum is created, absorbing any distortion that may affect the sides of the bottle.