Polyvinyl chloride (PVC) – a material that belongs to the group of thermoplastic (thermoplastic – is plastic, which after molding products retain the ability to recycle). Pure pvc of 43% is composed of ethylene (a product Petrochemicals) and 57% of the combined chlorine derived from common salt. pvc is released as a powder. For the production of window profiles, pvc powder was added stabilizers, modifiers, pigments and auxiliary additives. These components have an impact on such properties window profiles, as light resistance, resistance to weathering, color tint, surface quality, weldability, etc.
As stabilizer is mainly used lead, which is in the pvc in a bound, t.e. passive state. Recently, a number of firms have adopted an even more innocuous compound of calcium and zinc. For increase the impact toughness (impact strength – the ability of the material to absorb mechanical energy during deformation and fracture under shock loading) in polymeric materials, going to the manufacturer system profiles, add modifiers that increase the strength of the window parts as they are processed. So sometimes pvc for the manufacture of window profiles, referred to as modified.
It is also necessary Note that the content of vinyl chloride monomer in 1 kg of profile does not exceed 1 mg and their allocation at any processing of profiles is not happening. pvc is not readily ignite and self-extinguishing material. It is resistant to alkalis, acids, lime, and weatherproof. Proceeding from the above, we see that the material used for the manufacture of plastic windows, is harmless to humans. This confirmed by hygienic certificate, which has every manufacturer profiles