The scale of repair and housing construction in our time is really impressive. Reconstruction and creation of networks and communications to them is underway. This requires isolation, protection, as well as respect. The demand for polystyrene foam products is growing every year.
Farsighted entrepreneurs realized their benefits, and therefore acquire equipment for the production of expanded polystyrene, and also master new production processes for themselves. Their products are in demand, which allows them to make a profit.
Production Features
The manufacturing process of expanded polystyrene is divided into certain stages. They have some features. All equipment for the production of expanded polystyrene can also be divided into certain groups. The capacity of the units can be 250 or 1000 kilograms per hour.
In Europe, a line for the production of expanded polystyrene will cost much more, but equipment on the Russian market is available at a lower price, since foreign companies sell it cheaper in new markets for them. For example, HiSuccess International Machinery Limited equipment in Russia costs 80% cheaper than similar performance equipment sold in European countries.
This machine for the production of expanded polystyrene is able to work not only on plastic mass, which has not yet been processed, but also on material that has already passed the cycle of use. Secondary granules suitable for the production cycle without any restrictions are well suited for this.
If you buy such a line and run it on secondary raw materials, then you can count on the fact that the equipment for the production of expanded polystyrene will pay off very quickly. In addition, production costs will be reduced and profit will come sooner than on some other equipment.
Subtleties of choice
When buying suitable machines, it is necessary to proceed not only from economic calculations, but also take into account the environmental impact of production on the environment. Therefore, the extruder for the production of expanded polystyrene should not use harmful toxic substances such as HCFC and CFC as a blowing agent, but can work with the use of butane or carbon dioxide, which does not change the parameters of atmospheric emissions.
Technological equipment
Pre-foaming agent is used to heat polystyrene with steam to give it a foam structure. It is made in the form of a cylindrical tank equipped with mixers. Steam is supplied at the bottom. The foaming unit uses raw materials for the production of expanded polystyrene and is intended to increase the initial volume of particles by approximately 50 times, while they will remain in closed cells. Pre-foaming agents can be one of two types: continuous and cyclic foaming. Each has certain advantages and disadvantages.
The use of dryers gives a very good effect. With the help of a fan, the task of which is to supply heated air, a “fluidized bed” is created. It should be involved in the work together with a continuous type pre-blower, as it provides much greater productivity. The exposure time of the granules after foaming is significantly reduced before new foaming or subsequent molding.
Storage and molding
Further, the foamed granules must be aged in the hopper for 2-12 hours, depending on the requirements that are prescribed by the technological cycle. It is worthwhile to withstand because after preliminary processing the granules turn out to be too sensitive to pressure, and it takes time to gain strength. This is achieved by air diffusion until the low pressure is completely equalized, which is formed due to the cooling and condensation of the blowing agent.
When the granules pass the holding period in the hopper, they are poured into a mold, where they are subjected to heat treatment by saturated steam. This leads to their increase in volume. This secondary foaming is carried out in a closed volume, so the free gaps between the spherical parts are filled with their mutual deformation.
After cooling, the molded part acquires the specified dimensions. Forms vary in the degree of tightness and automation. The simplest and at the same time cheap ones work in manual mode. An increase in the quality of execution and the degree of automation leads to a significant increase in prices.
Additions
A set of technical equipment for the production of expanded polystyrene may include a vacuum installation. It is used to create a vacuum, accelerate the cooling processes of molded blocks, as well as to significantly increase productivity. This unit is often implemented in the form of a primitive vacuum pump or installation is much more serious.
Equipment for the production of expanded polystyrene: cutting and stocking
Finished blocks are cut with a heated nichrome string. Here, the price depends on factors such as quality of execution, degree of automation, and others. There are simple blocks of inclined type, where the block slides under its own weight along heated strings. And there are computerized devices that can cut and three-dimensional objects.
A device such as a steam generator, which is used for local production of steam, if there is no industrial source, can be useful. More efficient operation is ensured by the addition of a steam accumulator. The latter is often called a receiver. It is used to accumulate steam before a thermal shock in a block form. Its use allows you to get steam in a drier form.
If you turn to a large boiler equipment plant, then with great pleasure they will make such a device that will fully meet your requirements. That is why many often use common models of air receivers in their work. It is much more affordable and cheaper. Receivers can be used as drives in the system.
