Stamping of thermoplastic composites

Molding technology

Thermoplastic composites are increasingly being used to replace metal parts for reducing the weight of structures, in particular airframes to decrease fuel consumption. These components must be capable of resisting high-level structural, thermal and chemical stress. In demanding applications, continuous glass or carbon fiber-reinforced technical thermoplastic composites have proven their efficiency and reliability. Recently developed within the Sintex NP Group and certified by our clients in the aeronautics sector, our products and expertise in thermoplastic composite stamping enables us to transform high-performance
materials such as PEI, PPS or PEEK for these critical applications.

The Sintex NP process is illustrated in the following diagram.

 

A slab of consolidated thermoplastic composite is initially cut into a side panel before being heated to its thermoplastic matrix melting point. The panel is then quickly transferred to a compression press, which applies compacting pressure. The part is then removed from the mold after a cooling period for inspection (dimensional, state of material health, etc.) before being finished by trimming, machining or drilling.