PLASTIC INJECTION MOULDING

Reffay: experts in plastic injection moulding

REFFAY SAS has been a plastic injection moulding company for several generations, and is fully conversant with plastic injection moulding techniques and the monitoring of industrialised production. It processes a wide range of materials, some being more technical than others, where fillers are added to reinforce the mechanical properties and the part itself and make the finished product more robust (fibreglass, for example). REFFAY SAS also transforms materials with fire and smoke resistance, which are essential for certain sectors of activity, such as the railways.

Our machinery: injection moulding machines

Example of a part - thermoplastic injection

Reffay, experts in plastic injection moulding
Moulding of thermoplastic parts

Vertical process

Injection moulding machines
vertical clamping unit / horizontal

injection unit REFFAY SAS has a vertical clamping press for producing bi-material parts. It makes it possible to overmould metal inserts and also RFID chips, a cutting-edge technology. The choice of process and high standards of precision result in perfect continuity of shape and materials. Our teams will find the best solutions for you.

Horizontal process

Injection moulding machines
Injection / injection & compression

Injection moulding makes it possible to manufacture parts with complex geometries in large series, using a simple operating principle. It is essential to inject the material into the tool while maintaining the initial structure of the plastic (to limit shearing).

Diagram of the different stages:

Start of cycle / Filling phase (dynamic) / Substitution: filling of the imprint or imprints is complete, the screw can advance no further. Substitution is not a stage, it's a transition. / Pressure maintenance phase or quasi-static phase / Cooling / End of dosage / Decompression or suction

The injection parameters are: temperature, pressure, stroke, speed and time.

Processed materials

PA

Natural or glass-fibre reinforced polyamide

PP

Polypropylene

TPU

Thermoplastic Polyurethane

ABS

Acrylonitrile Butadiene Styrene

PBT

Polybutylene Terephthalate

PPS

Polyphenylene sulphide

Others

The advantages of thermoplastic injection moulding

- Thin walls: parts can be moulded with a very fine wall thickness
- Very high production rates: suitable for large production runs
- Mould-finished parts: no need for rework, optimized production times