Huntsman develops dosing system for mixing recyclates in elastomers

Modena, Italy – Huntsman has developed a new bolt-on filler dosing system that can enable the mixing of up to 25% recycled content (by weight) into hot cast polyurethane elastomer systems.

The new system can be added on to Huntsman’s existing Castech machines which are used to cast compact polyurethane elastomers and microcellular elastomer foams from isocyanate and chain extender combinations.

In a statement 30 June, Huntsman said the system enables its Tecnothane engineering elastomers to include fillers made from recycled rubber, solid PU and TPU, and fibres. Recyclates can also vary in density and size depending on requirements.

The elastomers can be used in durable components used in harsh industrial and logistics applications such as wheels, castors and rollers for mining equipment, warehouse vehicles, and rollercoaster rides at amusement parks.

To maintain overall part integrity, the dosing system has been engineered to minimise the risk of air bubbles forming as recycled fillers are added.

Once mixed with the system, the recycled content “flows freely into the mould along with the rest of the system and bonds well with the matrix,” Huntsman said.

“Featuring a range of interchangeable parts, these machines are fully flexible and can be tailor-made to suit customers’ requirements,” explained Andrea Ghermandi, business development manager EAME.