Subclass 1/26: Mechanical deformation of paper or cardboard without removing material including combined deformation and laminating (embossing combined with application of ink, type marking presses, selective embossing machines B41F, B41J, B41K, B41M; machines or apparatus for embossing decorations or marks B44B 5/00; artists hand tools for embossing B44B 11/04; producing decorative effects by processes for stamping ornamental designs on surfaces B44C 1/24; mechanical deformation during paper or board making, kinds of paper or board D21) Corrugating; Corrugating combined with laminating to other paper or cardboard layers (corrugating veneer B27D) Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders