Coating technology to improve the barrier properties of polyester bottles

The Scientific and Industrial Research Council of South Africa (CSIR) has developed a coating technology that improves the barrier properties of PET PET bottles.

The technology, called Oxyp lete, is based on a two-layer external coating system and can be successfully applied to PET polyester and polypropylene packaging. It is expected to extend the shelf life of oxygen-sensitive beverage products such as juice, tea and perfume. Some polymers such as PET polyester have the best gas barrier properties in all polymers and are commonly used in the packaging of soft drinks, but their barrier properties are insufficient for the packaging of many perishable foods and beverages. CSIR stated that Oxyp lete technology works better than any other passive blocking measures currently in use. The gas barrier performance is 30 times better than conventional PET polyester. It also applies to some perishable food packaging, such as hot or cold filling of beer, and baby food packaging.

Source: Polyester Industry