Polyurethane foam injection machine in Tabriz
Polyportan is a type of foam with a very high density and has a high density. The basis of using this material is that it is injected with the help of plastic injection devices such as polyurethane foam injection device in a series of ready and pre-made molds and some different and beautiful shapes can be created with their help.
< For this reason, in recent years, this material has been used as a suitable alternative to conventional plasters used in decorating the interior of buildings. Polyurethane or Polyurethane is actually a process similar to plastering, but in terms of benefits, it is in the best condition compared to it. In this article, from Ashjari production group, a specialist in production and sale of sandwich panel foam injection machine in Tabriz, the most important positive points of using polyurethane are mentioned. It has been:
✅ light weight
✅ high durability
✅ good compatibility with the surrounding environment
✅ can be implemented in a short period of time
✅ high resistance to breaking
✅ high flexibility
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Polyurethane foam is created by the reaction between isocyanate and a type of compound containing active hydrogen called polyol. These two materials are combined with each other in polyurethane foam injection devices (polyurethane injection pump) with a specific ratio and the final product, i.e. polyurethane, is obtained. In the following, we will introduce polyurethane foam injection devices.
How is the process of production and injection of polyurethane?
In the polyurethane foam injection machine, there are two separate tanks. Isocyanate is kept in one tank and polyol is in another tank. Both of these tanks are equipped with a pressure control valve. There is also a pump in the lower area of those tanks that provides the pressure needed to move the isocyanate and polyol. The storage conditions of each of these materials in the tanks are special and they are kept under a certain operating pressure.
To inject these two materials into the mold, the ratio of the combination of these two materials is determined by the expert operator, and with the help of pumps that operate at a certain pressure, both of these materials enter the mold at a certain rate. After the release of isocyanate and polyol from their reservoirs, they come into contact with each other. This contact occurs in the mixing chamber. Isocyanate and polyol enter the mixing chamber at an operating pressure between 0.1 and 5 MPa.
Next, after the formation of foam, it is moved to the desired location. During the polyurethane transfer process, an expansion process occurs in the foam and its volume increases. In this way, the desired place in the mold is completely filled with polyurethane foam and the desired geometry is created. The correct setting of the pumps operation pressure shows its importance here. If their pressure can be adjusted in the right conditions, the smallest pore will not be created in the place of the mold and all the pores will be filled with foam.
What are the uses of polyurethane foam?
Polyurethane foam can be used as insulation. Keep in mind that you want to insulate a location or a place and that place has a complex geometry. In these cases, you cannot use the conventional methods for insulation; So you have to go for alternative methods. Polyurethane foam is one of the best options in front of you because with the help of a polyurethane foam injection machine, you can inject foam in complex geometries with the help of molds. Of course, this work requires experience and specialized skills, and it usually requires a lot of precision to get a good result.