Materials we use

The so-called EPS/polystyrene comes in several different qualities which meet a great variety of needs. The materials most commonly used by Sulotek are EPS/swollen polystyrene plastic and XPS/ extruded polystyrene plastic.

The EPS products that are hot wire cut have good price-quality ratio. EPS is a good packaging material because it protects against impact and vibration.

The compressive strength of the most commonly used qualities are in the range of 30-300kPa. EPS has a long-term heat tolerance of ca. 80°C and cold tolerance of at least -200°C. Also flame-retardant S qualities are available. However, EPS does burn just like other construction materials, so fire-safe use requires a fire-proof surface, which we can also provide.

EPS is manufactured from polystyrene by swelling it with water vapor. The propellant gas is environmentally harmless pentane, which is replaced by air in the manufacturing process.

XPS is more rigid, heavier and has greater mechanical strength than the EPS insulation. Hot wire cut material is excellently suited to logos and letters. The cutting produces an impressive, smooth and glossy surface. 

The average compressive strengths of XPS are higher than those of the EPS materials. The cell structure is uniform and closed, so the structure of XPS is airtight and watertight.

XPS is manufactured by mixing the propellant into molten polystyrene under high pressure. The molten mass is pressed through the nozzle at high pressure into normal air pressure between the guide plates so that the mass expands to the desired thickness and then solidifies.



Different coating and finishing techniques offer incredible possibilities!

Several different finishing and coating alternatives can be combined with Styrofoam. Polystyrene as such tolerates water and humidity, but with a suitable coating it becomes completely impermeable to water, humidity and vapor.

Also the surface can be treated to endure hard impact or wear, in matte or with glossy surface.

Other materials, such as sand, metal granules, mica, wood chips, artificial hair and concrete can be added to the surface of polystyrene, either patterned or colored. Very different coating materials can be used on the surface.

Naturally, the surfaces can be painted in different colors and with different painting techniques. The basis is similar to paper/cardboard materials: a porous surface displays the color fainter and bright/hard surface enables the use of any color of the spectrum.

Our own expertise is complemented by one of Finland's best known free-hand airbrush painters. This master offers unique products, comprehensive design skills and impressive displays.




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