Treatment for improving cellulose insulation
OwnerLeonard D. Roodinventor
Life of this patent
Estimating the term…
Abstract
A method for manufacturing a tire retardant cellulose insulation with reduced density and reduced settling. The method consists of adding a material, the fibers of which have a positive electrostatic charge, onto a shredded newspaper base either before or after the addition of a pre-coat, consisting of a mixture of limestone and an antistat. A fire retardant agent is then added and the materials are ground in a finish mill. The newspaper fibers become positioned at an angle to the paper pieces, increasing the distance between the paper pieces, thereby lowering the density of the cellulose. Fibers such as ground cardboard, wood mulch, sawdust, and fiberglass fibers are examples of materials with electrostatically positively charged fibers.
Claims16
A method for manufacturing fire retardant cellulosic insulation comprising shredded cellulosic fibers and paper pieces coated with a mixture of limestone and an antistat and having a fire retardant agent deposited on it, wherein the improvement comprises:
- (a) adding electrostatically, positively charged fibers and grinding the fibers, paper pieces and electrostatically, positively charged fibers after adding the electrostatically, positively charged fibers;
- and
- (b) coating the fibers paper pieces with substantially 0.001% to 0.01% by weight antistat based on the weight of cellulosic fibers, paper pieces and electrostatically, positively charged fibers.
An improved cellulosic insulation having reduced density and settling and comprising:
- (a) shredded cellulosic fibers and paper pieces coated with a mixture of limestone and an antistat;
- (b) electrostatically positively charged fibers which have been ground with said cellulosic fibers to cause electrostatic charging of the electrostatically, positively charged fibers;
- and
- (c) fire retardant chemicals which are adhered on said shredded cellulosic fibers, paper pieces and electrostatically, positively charged fibers.
Dependencies are inferred from the claim text.