General:

Discovered between the First and Second World War by Professor Otto Bayer in 1837 and subsequently patented by Dupont in 1942 thanks to William Hanford and Donald Holmes, the term polyurethane indicates a large family of polymers in which the polymer chain is made up of Urethane bonds -NH- (CO) -O-.
It is an elastomer with extraordinary physical-mechanical properties, characterized by high resistance to abrasion, cutting, tearing and hydrolysis. It can be used at temperatures from -45 to +90 ° C, and is extremely versatile.
If stretched or compressed, after the stress is over, it retrieves the original size quickly: elastic memory is one of its peculiar features.
They feature this polymer its bright colors and smooth and oily surface.
Polyurethanes can be supplied in the form of semi-finished slabs, rounds and sleeves or finished products obtained by casting or molding.

Melted polyurethane is particularly suitable for the coating of wheels, rollers, plates or other items subject to particular stress, strong wear and tear
The combination of its outstanding features allows it to be widely used.
Working temperature -30 ÷ 80 ° C.

Technical features:

• Exceptional resistance to tearing, cutting, abrasion, traction and flexion.
• High elastic modulus and high transmission force, minimum permanent deformation even with heavy loads.
• Good resistance to animal oils and fats and to most petroleum products. Good seawater resistance, not subject to hydrolysis (EU).

Defects:

• The solar exposure must be contained.
• Low gas permeability.

 

The printing polyurethane allows to obtain details otherwise very difficult to achieve by the other polyurethane, on the contrary it has a significantly lower mechanical resistance but a higher heat resistance.

Technical features:

• High mechanical properties, abrasion resistance, laceration, traction and flexion,
• Low permanent deformation.
• Good resistance to animal oils and fats and to most petroleum products.
• Working temperature -30 ÷ 100 ° C.

Defects:

It is not recommended to produce non-toxic items.

Applications:

Mechanical: Used for roller sheathing, support planes where a tear-resistant material is required
Groceries: available on request the food version.
Chemical: Good resistance to animal oils and fats and to most petroleum products.
See the file for technical specifications

 

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