Polyurethane

Everyone knows PVC boots, those heavy, cumbersome boots that give you cold feet in winter and sweaty feet in summer. With Bekina polyurethane boots this is a thing of the past!

1. Advantages?

	Light and flexible A pair of PU boots weighs approximately 1 kg less.An enormous difference! In addition your polyurethane boots will remain flexible and pleasant to wear, even under extreme temperatures of -30°C.
	Thermo-insulating Air is an excellent insulator: the polyurethane in our boots is a foamed material consisting of millions of tiny air bubbles. Your feet will be warm in the winter, while the material's breathing features will keep your feet from transpiring profusely in summer.
	Durable The PU used by Bekina withstands organic fats, hydrocarbons, mild chemicals, as well as animal fats, oils and industrial greases. Tests prove that polyurethane boots last up to three times longer than PVC boots.

2. What is polyurethane?

Polyurethane, also referred to as PU is a synthetic, foamed material that is made up of two components: polyol and isocyanate. They are mixed at a temperature of approximately 50°C in order to eventually form a polymer with air bubbles.
The combination of both a soft and a hard component forms the basis for PU's double properties: flexible as well as strong and durable.

3. How are Bekina boots made?

Polyurethane boots are made through injection on a carousel. A conical screw injects the material into a mould.
The production of polyurethane boots is quite complex and delicate. In order to obtain a foamed polyurethane, several chemical reactions occur at the same time a few seconds apart. Several factors determine the success of the chemical reaction:

• the right choice of components
• the correct dose and temperature
• the carousel's rotation speed

That is why Bekina is proud to be one of the few companies in the world to have mastered this high-tech process.