+44 (0) 1584 810600 PRODUCT FINDER BESPOKE SOLUTIONS Esterform Packaging preforms containers about technology case studies news contact Technology Significant recent and on-going investment ensures world class capability. learn more About PET PET (Polyethylene Terephthalate) is a polymer with excellent clarity, impact strength and other mechanical properties. PET Polyester was first developed for fibres by British Calico Printers in 1941. In the 1970s the technique for blow moulding bi-axially orientated PET became commercially viable. Esterform’s Tenbury Wells site was the first in Europe to produce PET preforms for bottle production. Today PET is the material of choice for rigid packaging for a vast range of products. PET preforms are first produced by the injection moulding process. Containers are produced during a second process which stretches and blow moulds the heated preform into the shape required. The preform neck remains unaltered in this process, and because it is injection moulded, in conjunction with the closure or lid, provides a waterproof and gas proof seal. The molecular structure of PET, which is enhanced by the stretching and blowing process creates a very robust, flexible material. This generates containers that are light, resealable, safe and strong. PET provides good barrier properties against oxygen migration and carbon dioxide. Different technologies also exist to enhance the inherent barrier properties of PET via the use of additives. Next CASE STUDY Pip & Nut gathers shelf appeal with custom jar New jar for Naturally Nutty Pippa Muray Read full case study CASE STUDY Premium PET bottles for premium milk make a splash Clearly Creamy. Read full case study Research & development Continually pushing the boundaries ensuring we stay at the forefront of PET THE LABORATORY NEW MATERIALS POST-CONSUMER PET & PLANT BASED MATERIALS The Laboratory Esterform is the only UK independent polyethylene terepthalate (PET) preform and bottle supplier with a true on-site PET analysis facility. This facility was originally opened to provide internal quality assurance for Esterform products. The Laboratory is responsible for ensuring the quality and consistency of the Esterform brand, throughout the production-supply chain. The laboratory’s unique system of primary and secondary analysis ensures total quality control from production through to delivery. Externally, PET analysis is offered to Esterform’s customers. This gives an exceptional level of service, offering customers the opportunity to discuss any aspect of PET properties or performance with a member of the technical department. Next Frequently asked questions FAQs all about Polyethylene Terephthalate (PET) preforms, bottles and jars What is a preform? How is PET made? At what temperature can PET containers be filled? Does PET contain any harmful chemicals? Is PET food contact safe? Can PET be recycled? Does Esterform produce caps and closures? Does Esterform make bottles from any other materials? back to top Sustainability Environment Employees Health & Safety Community Legal Privacy & Cookies Legal Sign up to our newsletter Subscribe +44 (0) 1584 810600 sales.orders@esterform.com Copyright 2021 Esterform Ltd Registered in England Registered Office: Boraston Lane Burford Tenbury Wells WR15 8LE Registered Number 3627281 Web Design Services by Authentic Style