Water resistant paperboard and method of making same

Details Water resistant paperboard and method of making same Water resistant paperboard and method of making same

1991-05-29

1993-01-05

Chin, Peter

Paper making and fiber liberation

Processes and products

With coating after drying

162158, 162184, 427395, D21H 2116

Patent

active

051767953

ABSTRACT:
A paper sheet or paperboard, such as boxboard, cardboard and the like has one surface coated with a surfactant to prevent, or at least retard the penetration of moisture through the thickness of the paperboard to the other surface thereof. A method of making a paper sheet or paperboard which has an improved resistance to or retards the penetration of moisture through the thickness of the paperboard comprises the sequential steps of applying a thin coating of a surfactant to one surface of the paperboard, and immediately drying the coated surfactant on the paperboard.

REFERENCES:
patent: 2185859 (1940-01-01), Massey
patent: 3024129 (1962-03-01), Brundige
patent: 3081190 (1963-03-01), Johnson
patent: 3674632 (1972-07-01), Wennergren et al.
patent: 3682696 (1972-08-01), Yasuda
patent: 3881988 (1975-05-01), Yasuda
patent: 4666746 (1987-05-01), Lassus
Casey, Pulp and Paper, 3rd ed. (1981) vol. IV pp. 2486, 2487.
Casey, Pulp and Paper, 3rd ed., vol. III (1981) pp. 1699, 1667, 1683, 1700.
Schwartz, Surface Active Agents and Detergents, vol. II, (1958) pp. 666, 667, 668.

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