Process for applying microcapsule-containing compositions to...

Details Process for applying microcapsule-containing compositions to... Process for applying microcapsule-containing compositions to...

B - Operations, Transporting

05

D

117/116

B05D 1/28 (2006.01) B05C 1/08 (2006.01) D21H 23/56 (2006.01) D21H 23/58 (2006.01)

Patent

CA 2010751

Abstract Process for Applying Microcapsule-Containing Compositions to Paper Microcapsules are applied in metered quantity to a paper web passing through an ingoing nip between a hard applicator roll and a soft backing roll. Metering is achieved by means of a deformable metering roll in adjustable pressure contact with the applicator roll and rotating in an opposite sense thereto to define an ingoing nip. Coating composition is fed to this nip from a pipe or by the roll dipping into a bath of coating composition. The metered coating emerging from the metering nip is re-distributed and smoothed by a deformable smoothing roll rotating in the same sense as the applicator roll and in contact therewith. The process facilitates application of relatively high solids microcapsule compositions at low wet coatweights.

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