Printing paper and a process for its manufacture
AssigneeStora Feldmuhle AG
InventorWerner Bergmann
Life of this patent
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Abstract
A matte printing paper, excepting bank note and security document paper, especially for offset or intaglio printing, is coated with a composition containing calcium carbonate as a coating pigment, a binding agent for absorption of printing ink and 10 to 65% by weight, based on its total solids content, of ungelatinized starch granules, except rice starch granules.
Claims10
A matte printing paper consisting essentially of a raw coating paper coated with a coating composition containing 25 to 70% by weight of calcium carbonate as a coating pigment, 10 to 65% by weight of ungelatinized starch granules, except rice starch granules, and no more than 15% by weight of a binding agent for the absorption of printing ink, based on the total weight of said coating composition.
In the method of manufacturing a matte printing paper by applying a coating composition contained 25 to 70% of calcium carbonate and no more than 15% by weight of a binding agent to a raw coating paper which has been provided with a prime coat, and drying the coated paper, the improvement which resides in that said coating composition contains 10 to 65% by weight of ungelatinized starch granules, based on the total weight of said coating composition, and the starch granules are not added to the coating composition until after all the other components have been added.
Dependencies are inferred from the claim text.