Polivinilkhlorid (PVC) is material, related to the group of termoplastov (Termoplasty are plastics which after shaping of good save a capacity for the repeated processing). Clean PVC on 43% consists of etilena (product of petrochemistry) and on 57% from the linked chlorine, got from culinary salt. PVC is selected as powder. For the production of window types, in powdery PVC add stabilizators, modifiers, pigments and auxiliary additions. These components have influence, as svetostoykost', stability against atmospheric influences, colour tint, quality of surface on such properties window types, svarivaemost' and etc

As stabilizators lead which is in PVC in linked is mainly utillized, I.e. biologically passive voice. It was lately begun to apply the row of firms yet more harmless connection of calcium and zinc.

For the increase of shock viscidity (shock viscidity is ability of material to take in mechanical energy in the process of deformation and destruction under the action of the shock loading) in polymeric materials, going to making of system types, modifiers which promote durability of window details at their treatment add. Therefore sometimes PVC, utillized for making of window types, name modified.

It is also necessary to mark that maintenance of vinilkhloridnykh monomers in 1 kg of type does not exceed a 1 mg and their selection at any treatment of types does not take a place.

PVC is trudnovosplamenyayuschimsya and самогасящимся material. He is steady to influence of lyes, acids, to exterminate, and also to atmospheric influences.

Coming from everything higher than izlozhennogo, we see that material utillized for making of plastic windows is harmless for a man. It is confirmed hygienical certificates which the producers of types get in Russia.

Plastic windows can be applied in production, public and dwellings buildings, no hygienical limitations on their application are not present. Other business, that windows from any material, including from PVC must satisfy the whole list of technical requirements, such as: heat conductivity, providing of the rationed ventilation, sound-proofing and other A their application domain is determined these.

Our review about PVC would be full not, if we were not stopped yet for one important question. It is utilization. To this problem in sew on yet not spared a country due attention, but in the world it stands very sharply. It is necessary to do justice the developers of the systems of plastic windows which created conception of reusing. Walking away from a production and types from the dismantled windows can be exposed to utilization to 5 times without every loss of high-quality descriptions of initial raw material. During utilization insignificantly the tint of plastic changes only.