Principle of the sandwich structure

The hybrid techniques associate two (or more) materials and combine the benefits and the 

Several producers such as Bayer, Dow (LFT-PP concept) and Rhodia (PMA - Plastics Metals Assembly, and MOM - Metal Overmoulding - processes) have developed their own hybrid technologies. 

Currently, one of the most important applications is the front-end of recent cars such as the Mini Cooper from BMW, Mazda 6, Audi A6, Ford Focus and VW Polo, associating long glass fibre reinforced polypropylene injected onto stamped metal, which leads to weight savings in the range of 30-35% compared to traditional solutions. 

Some thermoplastics, polyethylene or EVA for example, can be cured before use to improve some performances. Tlie main processing methods involve  

The secondary transformation processes use semi-manufactured products resulting from a primary transformation, for example  

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