Process for wetting a paper web during calendering using coating

Details Process for wetting a paper web during calendering using coating Process for wetting a paper web during calendering using coating

1990-10-17

1991-12-31

Fisher, Richard V.

Paper making and fiber liberation

Processes and products

With coating after drying

162198, 162206, 162DIG6, D21H 2154

Patent

active

050768883

ABSTRACT:
The invention relates to a process for wetting a paper web in a calendering step by using water-containing microcapsules in the surface structure layer of the paper web, said microcapsules being ruptured in the calendering step whereby water is released. The invention also relates to microcapsules comprising a water-impermeable shell and an interior substantially comprising water, and having a diameter of 0.1 to 100 .mu.m and a shell thickness of 0.01 to 5 .mu.m.

REFERENCES:
patent: 4020210 (1977-04-01), Greer
patent: 4370923 (1983-02-01), Schmidt
patent: 4642164 (1987-02-01), Hanhikoshi et al.

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