Aspira One recyclable polymer for EBM processes

Eastman Chemical Company has added the Aspira One polymer to its portfolio of resins. Carrying resin identification code 1 (RIC 1), Aspira One is designed for extrusion blow moulding (EBM) processes and packaging applications such as clear handleware and large-size bottles.

A polyethylene terephthalate (PET) polymer, it is claimed to provide an optimal balance of recyclability, product performance, production efficiency and aesthetics versus alternative polyester resins available to the EBM market.

The polymer is sustainable, being compatible in the PET recycle stream and carrying RIC 1. It received recognition from the Association of Postconsumer Plastic Recyclers (APR) in July 2012 for meeting the PET Bottle Critical Guidance Document protocol.

Aspira One enables the design of unique, clear and glossy containers, such as handles, through holes and other features that can only be obtained by the EBM process. For bottle performance, the material offers robust toughness and is free of bisphenol A and halogens. The polymer’s clarity allows consumers to see the contents of their packages, providing product differentiation and shelf appeal.

In contrast with other polyester resins for EBM, the polymer is an amorphous, melt-phase produced material. Because Aspira One pellets are not crystalline or solid-stated, they can be dried and processed at lower temperatures than other PET resins. This lowers energy usage, improves melt quality and minimises thermal degradation of the polymer.

Crystallisation of bottle flash regrind is not required because Aspira One pellets are amorphous and thereby compatible with the regrind in a dryer set-up. It does not melt fracture at high extrusion rates, giving it high clarity on all EBM platforms.