Glass mat thermoplasticGMT

A semi-finished sheet of glass mat reinforcement in a thermoplastic matrix, typically polypropylene, which is heated and compression moulded into parts in short cycle times. GMT is an established material for automotive components such as underbody shields, seat structures and bumper beams.

Related terms

Organosheet

A fully consolidated sheet of continuous fibre fabric in a thermoplastic matrix, supplied ready to be heated and thermoformed, often with injection-moulded ribs added in the same tool. Organosheets bring continuous-fibre performance to high-volume automotive production.

Composites & laminatesManufacturing processesAutomotiveIndustrial

Thermoplastic composite

A composite whose matrix is a thermoplastic polymer, such as polypropylene, polyamide or PEEK, rather than a curing thermoset. Thermoplastic composites can be formed and reformed with heat, joined by welding rather than bonding, and are more readily recycled at end of life.

Composites & laminatesSustainability & environmentalAerospaceAutomotiveIndustrialGreen energy

Compression moulding

A moulding process in which a charge of material, such as sheet moulding compound or a preheated thermoplastic blank, is placed in a heated matched metal mould and formed under press pressure. It offers short cycle times and good surface finish and is widely used for automotive panels and electrical components.

Manufacturing processesComposites & laminatesAutomotiveIndustrialConstruction

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