Method for coating paper with pressure rupturable fluid containing capsules

Abstract

Abstract The invention in a machine and method for ''''on-the-machine'''' coating of a paper web to coat one surface of the paper web with a uniform distribution of pressure rupturable liquid containing capsules wherein the papermaking machine is provided with a printing couple while the paper is in a substantially uncured state with one roll of the couple comprising an impression roller having a resilient surface and the other roll comprising a printing roll having a multiplicity of cells uniformly distributed in closely spaced-apart relation in the peripheral surface of the roll with means for application of the fluid composition containing the rupturable capsules in suspension onto the peripheral surface of the roll in an amount at least sufficient to fill the cells and means for doctoring the peripheral surface of the roll to remove coating composition from the area between the cells whereby, when the paper web is advanced in pressure contact between the roll pair, substantially pressureless transfer occurs of the coating composition in the cells to the adjacent side of the paper web to coat the paper web with the pressure rupturable capsules as a continuous operation with papermaking.

Inventors

• 👤 Thomas W Busch

Bibliographic Details