On the polystyrene (EPS)

Polystyrene is a gas-filled material made from polystyrene and its derivatives, and copolymers of styrene.

EPS production technology

1) polystyrene pellets are put into the hopper of pre-expander, where they swell and acquire a spherical shape.

2) Each transaction is accompanied by foaming of foam-flecked beads in a special hopper, where inflated polystyrene beads are from 12 to 24 hours. Over this period, the pressure inside them is stabilized, then they are dryed.

Upon completion of a predetermined amount of foaming and withstand term maturing operations, polystyrene beads are placed in a molding machine, where under the action of hot steam polystyrene blocks are formed. Trapped in a narrow mold cavity, under the influence of steam expanded foam beads are glued together, keeping the shape after cooling and removal from the mold.

3) At the last stage, polystyrene blocks, often of impressive size, are cut on the set sizes. But first the unit is placed on an intermediate storage, where it contains for about 24 hours.

The fact is that under the influence of a vapor, blocks of polystyrene gain excess moisture, and it is impossible to perform smooth cutting of wet Styrofoam as well as to avoid the bruises. After drying, the polystyrene blocks are cut horizontally or vertically with machining saw.

Architectural facade elements are performed by ECODEKCO of the PSB-S25F expanded polystyrene, 17-20 kg / m³ density.

This foam is most commonly used for external thermal insulation of buildings, both civil and industrial purpose. The average density, compared with other types of polystyrene foam plates, make PSB - S 25 F easy to install - it does not crumble when cutting, cut easily, does not break when gluing to the walls. In addition, these same properties - strength and ease of cutting – make this kind popular in the manufacture of foam shaped decorative elements for facades.

PSB – S 25 F foam is a brand of foam with an average density, specially designed for the insulation of facades of buildings and structures. In contrast, materials with a higher density (which are more expensive), this foam is the perfect solution at the rate of quality-to-price ratio for thermal insulation of buildings and structures.

In addition, polystyrene PSB - C 25 F is characterized by high durability, reliability and strength.

Manufacturing technology of EPS

1) Manufacturing of foam takes place by contour thermal cut on industrial equipment, equipped with CNC (computer numerical control - a computerized management system) using hot strings.

This innovative method of geometric cutting polymers allows to obtain a product with a unique contour accuracy and microscopic thickness cut. The edges of the cut are perfectly smooth.

If during the manual operation with bulk products you cannot do without errors, then with the industrial shape cutting you can achieve better quality and elegance of forms. Drawings of products in electronic form shall be entered in the CNC. Hot string cuts the shape of the product.

Architectural elements of the EPS may be of most optimal size, only the cutting machine limits the size: 420 mm x 250 mm x 2 m (width x height x length), other large parts are glued together with a large parameter of the smaller size of parts.

The optimality of part dimensions ensures the quality of the application of putty composition.

Otherwise, if the details of the dimensions are larger than dimensions of the cutting machine, filling them cause uneven coating by increasing the pressure of the liquid column on the surface of the detail.

Cutting foam is carried by the vector pattern, for which the image can be used, made in Corel Draw or Auto CAD program. This allows cutting of very complex curved contours and helps to achieve a high replicability process.

2) Then the special broaching machines apply a protective coating of 2-4 mm thick on the product, in order to protect the foam from acid dyes and solvents.

The protective coating is manufactured by Ecodeco under the trademark "Ukrepit" and is available in three forms:

• pasty putty - used for application on the rectangular products in a single layer with a layer thickness of 2-4 mm, a flow rate of 4.5 kg per 1 m²;
• Filler "FLEX" is used for application to the radius products in a single layer with a layer thickness of 2-4 mm, a flow rate of 4.5 kg per 1 m²;
• reinforcing filler (spray) - is used for the reinforcement of large parts (eg, keystone) by spraying in several layers with a layer thickness of 2-4 mm, a flow rate of 4.5 kg per 1 m².

Thickness of putty layer can be adjusted in height by lift of the broaching machines knife.

The advantages of such a coating. It gives the EPS longevity, protects it from UV rays, allows the formation of different textures on the surface of the EPS.

After application, the coating layer must be dry, then the product is applied (reinforced) decorative layer of paint and dryed again.

After staining, the resulting product the material from which it is made is unrecognizable.
Architectural elements of the EPS can be made to customer's order under painting or of any texture.

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