The profiles for UPVC Windows and UPVC doors are pressed up against the heated flat plate, which is lowered after the appropriate period of time, to allow the profiles to be brought together. The actual bonding occurs during the cooling phase and the profiles emerge joined solidly together.
The process is monitored automatically by controlling regulatory devices. The careful balance between pressure, temperature and timing ensuring a high quality weld. Here we see the welding process for UPVC Doors again, this time in greater detail. As soon as the heated flat plate is in position, the melting of the PVC material is clearly visible.
The plate moves down, and the softened ends of the profiles are pressed together to form a joint. Once the necessary cooling time has elapsed, the cooling is complete and the welded frame can be removed. The welding process can, of course, be carried out using a single-head machine, as in our second example.
