The surfaces to be bonded must be clean, dry and free from grease and dust. Greasy leathers: in some cases, to improve penetration of the adhesive, we recommend applying a first coat of our Überkoll Ancorante PU/PVC. TR and SBR rubbers: pre-treat with Überkoll Alogenante. PVC, PU and TPU: roughen the surfaces and wash them with Überkoll Solvente Cleaner cleaning primer. The adhesive to be used and the surfaces involved must be acclimatised before starting the bonding procedure. Stir before use. Spread an even layer of Überkoll Poliuretano on both surfaces to be bonded using a brush. Wait until the solvents have completely evaporated, generally 30 minutes. Heat-reactivate the adhesive layers at a temperature of about 70-75°C for a few seconds. Immediately join the parts, applying strong pressure over the whole surface. If possible, use mechanical pressing. Avoid trapping air bubbles between the parts and take care to position them correctly, because the bond is very strong and difficult to reposition. Store at room temperature in a dry, indoor place, in the original packaging.