In the production of window blocks today, polyvinyl chloride (PVC) is most often used today. Its composition was obtained at the beginning of the 19th century, and in the production of window profiles it has been used somewhere from the beginning of the 50s. This material is a colorless thermoplastic polymer of artificial origin, which has high heat resistance. It is a derivative of natural materials – table salt and oil.
PVC profiles are made by pushing polyvinyl chloride through special forming holes. Before this, the polymer, along with fillers, plasticizers, softeners and stabilizers, melted until uniform, pulling material and passed through forms, then cooled. So it turns out a hollow profile with jumpers in air chambers. Excellent heat and sound insulation characteristics of the profile are achieved through the creation of a large number of hollow chambers. Perhaps another advantage is their cost. You can buy the windows Kharkov inexpensively at any time of the year. At the same time, the quality of the products remains at the invariably high level. This also needs to be remembered.
As it seems from the side, this process is very easy and understandable. But then the question arises: why the cost of PVC profiles fluctuates so if the production technology is the same for all. The answer is simple – additives introduced into the smooth mixture. The manufacture of window profiles provides for the use of more than ten rather expensive components. By the appearance of the finished product, it is almost impossible to determine their presence. Therefore, many negligent industrialists try to save on these components.
For example, when low -quality titanium oxide is added to the mixture, the windows from such PVC in a couple of years acquire a yellow tint. This is due to the fact that this component goes through several stages of cleaning, which is very expensive. Poorly purified Titan oxide begins to darken over time. In addition, high -strength components are added to the profiles, designed to protect the finished product from strokes. It is important to distribute all these components in the mixture evenly, as well as cool using a special technology.
For these reasons, we advise you to choose window blocks that have received certificates of quality control system DIN EN ISO 9000-2000 and compliance with the right level of physical and mechanical properties.