BAK Thermoplastic Welding Technology AG
3
INTENDED USE
The COMON is an automatic hot wedge welding machine for overlap welding and for manufac-
turing of films and geomembrane liners in tunnels as well as in earthwork and civil engineering.
Heating system:
The wedge temperature is stepless adjustable and electronically controlled. According to the ma-
terial thickness the hot wedge position can be adjusted stepless as required.
Welding speed:
A double drive (upper and lower), which is stepless adjustable and electronically controlled.
The control system is designed in such a way, that the adjusteded speed remains constant inde-
pendently of the load.
Welding pressure:
The welding pressure is transmitted via a toggle lever to the pressure rollers.
The equalisation of the pressure to both welded sections (L1 and L2) as well as on a welded seam
without test channel is guaranteed by the swivel head. This allows T-joints to be welded without
problems. During the welding process the pressure adjusts itself linearly to the change in material
thickness of the geomembrane liner.
Overlap
max. 140mm
Type of seam
Welding seams are produced in accordance with DVS 2225 part I. Other
dimensions of seams are possible on request.
Type of wedge
In standard version the COMON is supplied with a copper wedge for wel-
ding of PE and PP, on request it is possible to get it with a universal cera-
mic wedge for all different kinds of material.
Cutaway model of wedge-drive system:
Upper drive / pres-
sure roller
Lower drive/
pressure roller
Welding direction
Pinch roller
Upper geomembrane liner
Front guide roller
Rear guide roller
Lower geomembrane liner
Adjustment screw
hot wedge
Hot wedge
