Use of foam in surface treatment of paper

Details Use of foam in surface treatment of paper Use of foam in surface treatment of paper

1985-06-17

1986-07-01

Chin, Peter

Paper making and fiber liberation

Processes and products

With coating after drying

162158, 162175, 162180, 162186, 427350, 427355, 427356, 427358, 427373, 427395, D21H 134

Patent

active

045978310

ABSTRACT:
Paper sheet or board is externally sized by applying to the surface thereof a rosin-based sizing agent in the form of a foam in the production of which the sizing agent itself acts as a foaming agent. After the foam has been applied to the surface of the paper sheet or board, at least a major proportion of the applied foam is mechanically broken down to provide a substantially uniform distribution of the sizing agent over the surface.

REFERENCES:
patent: 2370058 (1945-02-01), Maguire
patent: 2593008 (1952-04-01), Chappell
patent: 3494824 (1970-02-01), Roberts
patent: 4184914 (1980-01-01), Jenkins
Riddell et al., "The White-End Concept by the Use of Foam", Paper Tech. & Ind., Jul. 1977, pp. 176-180.
Riddell et al., "Three Developments at Wolvercote Papermill", Paper Tech & Ind., Apr., 1976, pp. 76-85.
Schwartz, Surface Active Agents and Detergents, vol. II, (1958), pp. 327, 332, 464.
Casey, Pulp and Paper, vol. III, 3rd Ed., (1981), pp. 1560, 1561.

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