Sifra International provides the rubber linings selected depending on the most suitable mixture for every need and application.
Sifra International rubber linings meet countless technical specifications required by the production processes that use rubber rollers. They can be applied in various sectors including steel, textiles, graphics, the paper, packaging and wood and plastic industry.
Sifra International rubber rollers bear optimally the charge of static and dynamic stresses. They effectively resist to solvents, concentrated bases and acids and high temperatures.
Our manufacturing process:
Sifra International follows a rigorous process in the manufacturing of polyurethane and all the following steps are strictly adhered to:
- Sandblasting this process has the purpose to clean and roughen the area to be lined, so as to favour the adhesion between adhesive and metal.
- Degreasing This process has the objective of eliminating impurities or traces of cutting oil or grease from the workpiece to be lined.
- Pickling this process has the function of eliminating any residues of dust and dirt after sandblasting from the material to be lined (rollers, wheels, etc.).
- Cementing thanks to specific primers we improved, this process has the function of ensuring the adhesion between polyurethane / metal by a thin and homogeneous layer of glue that is spread on the roller.
Finally, we continue with rubber lining, curing in an autoclave, turning or grinding according to the requests of the drawing and finally, if required, the mounting of bearings and supports.