Plastic injection
Mass production
Thermoplastic injection moulding (or injection moulding) is a manufacturing process used to mass produce plastic parts, particularly for the automotive industry. It involves injecting plastic, which has been rendered viscous by heating, at high pressure into a steel or aluminium mould, the shape of which corresponds to that of the part to be manufactured. This is one of the most common processes used in the plastics industry. It offers high precision and an excellent surface finish.
Injection equipment
Bi-injection and recycled materials
CGR has a fleet of hybrid or electric injection moulding machines ranging from 30 to 600 tonnes, with capacities from 0.1 to 1,300 cm3. This equipment enables us to inject a wide variety of thermoplastic materials, including biosourced, fibre-reinforced and recycled materials. CGR is also proficient in bi-injection. This technique involves injecting two materials successively or simultaneously into the mould, enabling flexible seals to be produced on a rigid body in a single operation, for example.
Materials and equipment
Sleeves, plugs, housings, covers, brackets, cassettes
We produce all kinds of thermoplastic parts, from small series (a few tens of thousands of parts per year) to large series (a few million parts per year), using moulds with 4 to 32 cavities. A significant proportion of our production is carried out by overmoulding metal parts. Our robotised presses are integrated into fully automated production lines. They can assemble mechatronic components, including by laser welding. Thanks to in-house mould maintenance, on-line 3D optical inspection and ongoing operator training, we are able to produce high-precision critical parts with a zero defect objective.
