The history of PVC windows in Nizhny Novgorod
Why now is PVC (polyvinyl chloride) used as base material for producing window profile? If we compare the PVC windows and wooden window frames, this once, there are several explanations.
The windows of the softwood, which formed the bulk of the domestic high-rise buildings, once every 15 years should be restored or completely replaced. Reasons:
1. Rotting frames in remote places, so that the window is not included in the doorway, and hardware stops working as it should;
2. Seal ceases to perform its insulating function. Inside the glass enters the water, so that it becomes murky and constantly misted.
The service life of windows hardwood comes close to the deadline, which will serve you the windows of PVC, but the costs of periodic painting or lacquering are not going to compare with the minimum of care, which require a PVC window.
Thus, PVC windows with their low prices are cheap to maintain, and, moreover, can be recycled after the end of life. Industry studies have shown that PVC windows are environmentally safe, do not corrode and are not afraid of frost and sunlight. PVC profile trudnovosplamenim and resistant to precipitation, the major acids, alkalis and industrial gases. For PVC profile do not operate gasoline, kerosene and various alcohols. Only partially soluble polyvinyl chloride in acetone and benzene.
Where did become aware of this wonderful material for PVC windows? It at least twice opened in the nineteenth century - in 1835 Henry Regna, and in 1872 Eugene Bauman. This plastic is trying to use for the production of various products, but the difficulty in handling allowed to do so only in 1926, when by mixing with additives could achieve the desired flexibility of the material.
Industrial production of PVC in full swing in Germany, which produced its own resources - limestone, coal and rock salt. From the salt obtained chlorine, and from coal and lime - acetylene. Now so is slightly more than half of all PVC and the rest is made from ethylene. Raw material for the thermoplastic polymer PVC is vinyl chloride, by which the PVC is produced by polymerization. At the initial stage is obtained by the fine white powder of PVC, which is still not suitable for the production profile as the starting material. After adding modifiers, stabilizers, excipients and, if necessary, the pigments of it is already possible to produce PVC windows. Properties of the future profile completely dependent on supplements, because from the same source material can be obtained and thin packaging film and thick-walled plastic pipe. As a stabilizer in PVC production uses lead, which, being in a bound state, biologically passive and not a threat to humans. Now produced a set of PVC building materials, and in many fields of construction, he is able to replace and such traditional materials as cement, wood or clay. Are made of PVC plastic cards, records for the phonograph, pipes for plumbing, plumbing fixtures and, of course, PVC window . In the global issue of plastic fraction of PVC is about 17%, which is the third place among all the polymer materials. The most famous symbol of polyvinyl chloride - PVC, but in print and online can also be found in Latin notation - PVC or PVC-P (plasticized polyvinyl chloride) and PVC-U (unplasticized polyvinyl chloride) and PVC-C (chlorinated polyvinyl chloride).
Profile from which to receive future PVC windows are produced by extrusion. This method of production, which softened PVC continuously extruded through the holes in the right section. The whole line, which produces PVC windows, consists of extruder, die, gauge the cooling element, a calibration table, which is equipped with a vacuum pump, roll, saw, paver shapes and packaging unit.
The process of producing PVC profile is divided into several process steps. In the extruder is plasticization forming mass in the spinneret (the die) - otformovka and cooling - in the gauge-cooling elements. Profile passage through these devices is provided by the rollers, and at intervals appropriate length profile cut in a cutting device.
Window profiles made from PVC modified udarovyazkogo.
