Knife or blade type coaters

Full Title

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) > Knife or blade type coaters

Child Classifications

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• D21H 23/36 Knife or blade forming part of the fluid reservoir, e.g. puddle-type trailing blade
• D21H 23/38 the fluid material being applied with a special device, e.g. with a roll in a flooded-nip inverted blade coater