CELLULOSIC MATERIALS AND METHODS FOR THEIR APPLICATION

摘要

The present invention, discloses an insulation composition for spray-on insulation, said composition including polyvinyl alcohol cooked without an acidic medium and cellulose fibers combined with an acidic medium. In certain embodiments cellulose fibers and acidic solids are ground together. The acidic medium may be solid boric acid. Liquid boric acid may be sprayed onto the fibers. Systems are disclosed for introducing the fiber acidic composition into a first hose of a spray nozzle while introducing polyvinyl alcohol into a second hose of the spray nozzle. An acrylic resin may be mixed with the polyvinyl alcohol.