Formable pulp compositions
AssigneeArmstrong World Industries, Inc.
InventorsJ. Stephen Fornadel, Harry F. Long
Life of this patent
Estimating the term…
Abstract
The present invention concerns our discovery that aqueous cellulosic slurries comprising primary binder, newsprint, sulfite pulp, and vegetable shell flour can be prepared and formed as desired into various configurations. The materials thus formed are usable for a variety of purposes including furniture, paneling and flooring structures.
Claims54
A cellulosic composition useful to prepare articles having a desired configuration, said composition comprising by weight 100 parts of thermoplastic or theromostet primary binder, from about 25 to about 700 parts of newsprint, from about 25 to about 500 parts of sulfite pulp, from about 25 to about 500 parts of vegetable shell flour, and a suitable quantity of water.
A cellulosic product having a desired configuration, said product comprising by weight 100 parts of primary binder, from about 25 to about 700 parts of newsprint, from about 25 to about 500 parts of sulfite pulp and from about 25 to about 500 parts of vegetable shell flour.
A process for preparing cellulosic articles having a desired configuration, said process comprising the steps of
- preparing an aqueous slurry comprising by weight from about 25 to about 700 parts of newsprint, from about 25 to about 500 parts of sulfite pulp, from about 25 to about 500 parts of vegetable shell flour, and optional components;
- adjusting the pH as necessary to cause precipitation of a subsequently added thermoplastic or thermoset primary binder onto the solid components of said slurry;
- dispersing 100 parts of said primary binder in said slurry;
- disposing said slurry in a desired configuration;
- removing excess water to form a preshaped article;
- and
- drying said preshaped article.
A process for preparing cellulosic articles having a desired configuration, said process comprising the steps of
- preparing a master batch slurry comprising from about 25 to about 700 parts of newsprint, from about 25 to about 500 parts of sulfite pulp and from about 25 to about 500 parts of vegetable shell flour;
- forming said master batch slurry into a mat;
- intermixing said mat with optional components and 100 parts of primary binder;
- and
- forming the intermixed material into a desired configuration.
Dependencies are inferred from the claim text.