Biodegradable and water-resistant paper product

Details Biodegradable and water-resistant paper product Biodegradable and water-resistant paper product

1995-11-16

1999-01-26

Lamb, Brenda A.

Paper making and fiber liberation

Processes and products

Articles

162179, D21J 104

Patent

active

058633880

ABSTRACT:
A biodegradable and water-resistant paper product which has the compositions of 8-30% weight of a biodegradable and water-resistant agent selected from the group consisting of calcium stearate, cellulose stearate, calcium palmitate and cellulose palmitate, 92-70% weight of pulp, based on the sum of the dry weight of pulp and water-resistant agent; surfactant selected from the group consisting of rosin soap, sodium oleate, sodium stearate, and sodium palmitate; and aggregating agent as alum. The paper product is prepared by a method 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 8-30% 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% 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 and 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

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