Details thereof, e.g. surface characteristics or peripheral speed

Full Title

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 a device carrying the material > Rolls > Details thereof, e.g. surface characteristics or peripheral speed

Classification Context

Section:

TEXTILES; PAPER

Class:

PAPER-MAKING; PRODUCTION OF CELLULOSE

Subclass:

PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES ,; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS OR SUBCLASS; PAPER NOT OTHERWISE PROVIDED FOR

Child Classifications

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• D21H 23/6 the material on the applicator roll being subjected to a particular treatment before applying to the paper
• D21H 23/62 Reverse roll coating, i.e. applicator roll surface moving in direction opposite to that of the paper