The positive cross pyramidal rollers for REVERSE rotation have been created by Gemata and used for many years in the roller finishing machines. They are particularly indicated for the finishing of stiff leather.

With their mechanical action, they are ideal for hot and cold fat liquoring and for coating printed splits.

Type Capacity Applications 8 B 33 - 40 Spreading of glue Heavy covering on splits 10 B 24 - 33 10 C 18 - 27 Thick coverings 20 B 15 - 25 Application of hot and cold and wax Thick impregnations and coverings 20 C 12 - 18 30 A 10 - 16 Coverings on splits and buffed leather 30 X 8 - 12 30 C 5 - 10 Finishings on full grain Application of laquer 30 F 3 - 6 60 A 1 - 3 Double-tone (multipoint) on heavy grain 40 F 1 - 2,5

This table is purely indicative. The capacity (in g/ft²) varies depending on the working speed and on the product's viscosity. Increasing the product's viscosity decreases the roller's capacity. The skin preparation is just as important in determining the absorbance and, therefore, the weight of the material deposited.