Invista recently developed a new material for beer packaging - Poly Shield gas barrier polyester resin. This material is in full compliance with the European Union's Beer Packaging Food Safety Standard.
Poly Shield is a new PET blend resin that combines both oxygen and gas barrier properties. The use of this material in PET single-layer beer bottles greatly improves the barrier properties of oxygen and carbon dioxide gas, and their oxygen-absorbing properties make them avoid the problem of “empty bottle lifeâ€.
With Poly Shield, preforms can be produced on standard injection molding machines without the need for additional equipment. The technology is currently being tested at beer production plants.