Aluminium is extracted from bauxite, which contains aluminium oxide. By heating it in sodium hydroxide solution, alumina is obtained from it, a white powder from which aluminium is in turn obtained in the smelting furnace by reducing oxygen.
From Raw Material to finished Profile
The aluminium billets required for the production of aluminium profiles are cast from the aluminium obtained in this way by adding various alloying components.
The heated billet is placed on the tool at the extrusion plant and pressed through the tool at high pressure. This deforms the soft aluminium into the desired profile shape. The profile is then stretched and hardened in the oven.
To protect the sensitive press-finished profile from corrosion, it is dipped into various chemical baths and the surface is transformed into a hard, scratch-resistant and corrosion-resistant layer. In addition, various colour shades from silver to gold to black can be achieved.
In order to adapt the profile to different floors with the same decor, the press-finished profile is covered with a decorative foil. The decorative foil is provided with an abrasion-resistant lacquer. The colouring can be done via the in-house digital printing or by means of gravure printing.
For matching the decor of the profiles to parquet floors, the press-finished profile is covered with lacquered veneer. The veneer is glued to the substrate with hot-melt adhesive.
MDF or HDF is made from wood trunks from many different types of wood that have been ground down to the individual wood fibre. The dried and glued fibres are pressed into a homogeneous, easily workable board.
For floor profiles, a denser MDF or even HDF is necessary as a base material due to the higher stress. HDF is necessary as a base material. Here, too, the boards are cut into strips using multi-blade circular saws and thus prepared for the next process step, planing.
Planing is the process of shaping the MDF or HDF strips into shape. The necessary planing knives are prepared in the in-house sharpening shop.
As floor profiles are exposed to higher stresses, the planed support is equipped with special decorative papers that have an abrasion-resistant lacquer or coating. This can be matched to the floor in the same decor.
Lacquered veneer is also used on floor profiles for matching the decor of the profiles to parquet floors. The veneer is glued to the substrate with hot-melt adhesive.