Treatment with a gas or vapour

Processes or apparatus for adding material to the pulp or to the paper > characterised by the manner in which substances are added > Addition to the formed paper > by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper > Paper being at least partly surrounded by the material on both sides > Treatment with a gas or vapour

Processes or apparatus for adding material to the pulp or to the paper (applying liquids or other fluent material to surfaces, in general B05; processes for making continuous lengths of paper D21F11/00) > characterised by the manner in which substances are added > Addition to the formed paper > by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper (D21H23/66 takes precedence; removing excess material D21H25/08) > Paper being at least partly surrounded by the material on both sides (D21H23/34 takes precedence) > Treatment with a gas or vapour