The HORN^® entrance cooler of Type HECO, which is installed in the entrance section of the tin bath, provides optimum production conditions in the tin bath right from the start. The cooling element is positioned above the glass ribbon and absorbs heat radiation from it in order to ensure the perfect glass temperature for the forming process (between 950 °C and 840 °C).

The entrance coolers are positioned on either side of the tin bath and can overlap in the centre in order to extract more heat from the middle of the glass ribbon.

In addition, the entrance cooler can be used at the end of the wide part of the tin bath, where it serves to catch condensate (dross trap), since it is easier to remove impurities from the cooling element than from other components of the tin bath. Depending on the type, the penetration movement of the entrance cooler can be carried out by means of a motor or manually.