A new type of PET resin is designed for the shaping of amber and green single-layer beer bottles. PolyShield PET resin from KoSa Corporation was mixed with MXD6 nylon 6 from Mitsubishi Gas Chemical Co., USA when it was blow-molded. Nylon 6 resin improves the barrier properties of oxygen and carbon dioxide. It is said that due to the improvement of transparency, the size of the nylon barrier layer is reduced by a factor of 10, and in a standard PET barrier layer, only 15 μm. PolyShield PET resin contains a compatible agent to reduce bottle haze and improve the dyeability of nylon/PET blends. Single-layer beer bottles processed with the PolyShield PET resin monitoring program achieved an 86% improvement in oxygen barrier performance and a 38% increase in carbon dioxide barrier properties.
Source of information: pack.cn