What are the other approvals required for PET resins?
PET resins often require approvals for End-use Industries and Converters. The End-use Industries test suitability of PET bottles for their respective products and the test protocols vary from industry to industry. For example, a Carbonated Soft Drinks manufacturer looks for properties like carbonation loss, creep resistance, burst strength, etc. whereas a Mineral Water manufacturer is more concerned about acetaldehyde content, test variation, etc. End-users like Pharmaceuticals, Pesticides and other chemicals carry out stability tests before deciding to use PET bottles. As far as PET Converters are concerned, the main considerations are consistency in processing parameters and consistency in the quality of bottles with respect to dimensions, material distribution, clarity, foreign specs, etc.
