PU tapes are usually made of one or two polyester reinforcement tie rods and polyurethane thermoplastic layers.
Depending on their purpose, PU tapes may have different properties such as:
resistance to vegetable and animal fats (food approval)
appropriate hardness of the base layer (usually about 90ShA).
If the belt is made of flexible tie rods, it can work in the so called basin.
The top layer of PU belts may be smooth or have one of several supporting structures, which reduce the adhesion of the product to the belt or give the transported products the appropriate structure. In addition, the surface of PU belts can be equipped with pickups, guide wedges or side frills. Polyurethane belts usually have a polyester fabric or a thin polyurethane covering layer on the underside. PU belts can be welded in a circuit in special presses or mechanically joined with Anker or Alligator pins. Due to high hardness of the supporting layer, specific construction and high resistance to low temperatures (even up to -30st.C), PU belts with a supporting layer are most often used in the food industry, e.g. in cold stores, for transporting frozen products, in the fish, meat, fruit and vegetable industries.