Method of preparing biodegradable, water-resistant paper utensil

Details Method of preparing biodegradable, water-resistant paper utensil Method of preparing biodegradable, water-resistant paper utensil

1995-01-09

1997-04-08

Lamb, Brenda A.

Paper making and fiber liberation

Processes and products

Article forming processes

162179, D21F 1300

Patent

active

056183879

ABSTRACT:
A method of preparing biodegradable water-resistant paper utensils which includes the steps of: (a) preparing a pulp aqueous slurry at a consistency of about 4%; (b) adding surfactant to the slurry; (c) thereafter, adding between 8 and 30 percent weight of a biodegradable and water-resistant agent to the slurry to form a slurry mixture; (d) refining the slurry mixture at a consistency of about 4 percent to a desired drainage; (e) diluting the refined slurry mixture and adding an aggregating agent thereto to form a furnish; and (f) after step (e), forming the furnish to obtain biodegradable, water-resistant paper board or directly a paper utensil. The forming step can be through a hot-press at a temperature of 115.degree. to 170.degree. C.

REFERENCES:
patent: 1345476 (1920-07-01), Clapp
patent: 1370650 (1921-03-01), Hoskins
patent: 1900427 (1933-03-01), Clapp
patent: 2006392 (1935-07-01), Greider
patent: 2103318 (1937-12-01), Clapp
patent: 3305434 (1967-02-01), Bernier

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