Process for making a paper based product employing a polymeric l

Details Process for making a paper based product employing a polymeric l Process for making a paper based product employing a polymeric l

1993-08-09

1995-11-14

Chin, Peter

Paper making and fiber liberation

Processes and products

Plural fiber containing

162158, 1621681, 162169, 162179, 162206, 162207, D21H 1310, D21H 1710

Patent

active

054663369

ABSTRACT:
The present invention provides a process for making a paper based product which comprises a paper sheet, an aqueous latex binder and a release agent comprised of an emulsion of lecithin and a fatty acid or derivative thereof. In one embodiment, the process comprises first preparing a slurry of a cellulosic pulp and a polymeric latex binder, and then breaking the stability of the latex so that the polymer particles of the latex are able to be deposited on the fibers of the cellulosic pulp. An emulsion comprised of lecithin and a fatty acid or derivative thereof is added during the process. The addition can be to the slurry, or to the web which is formed when the slurry is drained of liquid. The web is then dried to provide the paper based product. In a preferred embodiment, a slurry of cellulosic pulp is first drained of liquid to form a web, with the polymeric latex binder and emulsion being applied to the web prior to drying.

REFERENCES:
patent: 3509083 (1970-04-01), Winebrenner
patent: 4372814 (1983-02-01), Johnstone et al.
patent: 4481075 (1984-11-01), Dailly et al.
patent: 4545854 (1985-10-01), Gomez et al.
patent: 4810329 (1989-03-01), Camisa
patent: 5034097 (1991-07-01), Martinez et al.

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