by contacting paper with a device carrying the material (D21H23/32, D21H23/46, D21H23/66 take precedence)

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 a device carrying the material (D21H23/32, D21H23/46, D21H23/66 take precedence)

Child Classifications

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• D21H 23/54 Rubbing devices, e.g. brush, pad, felt
• D21H 23/56 Rolls (D21H23/38 takes precedence)
• D21H 23/64 the material being non-fluent at the moment of transfer, e.g. in form of preformed, at least partially hardened coating