Method for reducing the water vapour permeability of paper

Details Method for reducing the water vapour permeability of paper Method for reducing the water vapour permeability of paper

1991-11-15

1994-10-25

Lusignan, Michael

Stock material or miscellaneous articles

Composite

Of wax or waxy material

106218, 106230, 427391, 4273934, 427411, 428498, 428500, B32B 906

Patent

active

053587901

ABSTRACT:
The invention relates to a method of reducing the water vapor permeability of a sheet of paper, which comprises the step of coating the paper sheet with a film of 5-30 g/sq.m. of a coating medium consisting of a rosin sizing dispersion containing additives improving the film-forming properties of the coating medium, which additives include surfactants and waxes. It also deals with a paper so produced.

REFERENCES:
patent: 2251296 (1941-08-01), Shipp
patent: 2369450 (1945-02-01), Fisher et al.
patent: 3507685 (1970-04-01), Banerjee
patent: 3682696 (1972-08-01), Yasuda et al.
patent: 3707393 (1972-12-01), McDonald
patent: 5192363 (1993-03-01), Bussell et al.

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