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The offset paper is used for the seal of illustrated editions, magazines, books, newspapers and for long-term durability highly artistic multicoloured editions, which enclose complicated halftone illustrations. There is a tub sizing is used in the production of the offset paper. Tub sizing means applying the thin coat of sizing compound on the surface of paper (mass of pavement amounts to 6 g/m2) in order to provide high strength of paper. It helps to prevent picking of fibers by sticky paints and to diminish paper deformation under moistening it for providing of exact coincidence of paints in the process of chromotypography.
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