Method for incorporating feature substances into a paper web

Details Method for incorporating feature substances into a paper web Method for incorporating feature substances into a paper web

2007-02-13

2007-02-13

Fortuna, José A. (Department: 1731)

Paper making and fiber liberation

Processes and products

With coating after drying

C162S134000, C162S140000, C162S162000, C427S427100, C427S427300

Reexamination Certificate

active

11159293

ABSTRACT:
A method and apparatus for incorporating feature substances into a still moist but already sufficiently consolidated paper web provides for directing a feature substance suspension onto the surface of the paper web as a laminar jet with low jet pressure. A special pressure control circuit ensures that the jet pressure is always constant regardless of the number of parallel feature substance suspension jets directed onto the paper web. This makes it possible to incorporate a great variety of line codings in paper under the same process conditions without any visible changes in fiber structure occurring in the paper.

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