Extruded foam polystyrene is produced in the process of extrusion. Extrusion is a high tech process with a TEPLEX board as an end product; the board consists of 95% air and 5% polystyrene.

At the first production cycle polystyrene pellets are mixed with various extrudants at fixed pressure and temperature. Extrudants we use are produced by Clariant company, one of the recognized leaders in this sphere. TEPLEX high-quality equipment meets all modern requirements, that is why we use extrudants with maximum concentration of active agents only. In particular, we use a flammability reducing extrudant  with a maximum concentration of fire retardants. This level of concentration not only improves XPS properties but also helps reduce the dosage and thus, increase the ecological cleanness of the product.

Then polystyrene blend is mixed with a foam blowing agent and the extruder carries XPS to the roller conveyer where it is cooled and molded into boards.

As a foam blowing agent we use an ecologically safe blend of freons which is frequently used in refrigerators and cold storage plants. In the process of extrusion polystyrene structure undergoes changes: molecules of the residual blowing agent are replaced by air molecules.

At the next production cycle TEPLEX board is nippled, edge-finished (shiplap or tongue&groove) and surfaced (even or textured).

At the last production cycle TEPLEX boards are stockpiled and trade dressed into a UV filtering pack.