Powdertech Surface Science Ltd has developed an innovative, time and labour-saving method for joining  metal to thermoplastic composites. Demonstrated within the Ariel Hipercar project, adhesive-free Powderbond™ bonds polypropylene glass fibre composite to aluminium in the vehicle’s monocoque chassis. The process is single stage, placing powder coated aluminium into a mold together with polypropylene and using the standard composite curing cycle. No adhesives are used at all.