Spray-applied cellulose insulation and method

Details Spray-applied cellulose insulation and method Spray-applied cellulose insulation and method

C - Chemistry, Metallurgy

08

L

C08L 1/02 (2006.01) B05D 1/02 (2006.01) B29C 70/02 (2006.01) B29C 70/10 (2006.01) B32B 27/04 (2006.01) B65G 53/40 (2006.01) C09D 101/02 (2006.01) C09J 129/04 (2006.01) E04B 1/74 (2006.01) E04B 1/76 (2006.01) F16L 59/02 (2006.01)

Patent

CA 2451251

A spray-on cellulose insulation and method of application is described herein. The insulation comprises cellulose and an adhesive having gelling properties during application, preferably polyvinyl alcohol. The cellulose includes an additive which triggers gelling of the adhesive upon application to the cellulose. The cellulose preferably also includes a crosslinker for the adhesive. The additive and the crosslinker may be the same, which means the crosslinker is sufficiently alkaline to also trigger the gelling of the adhesive upon application of the adhesive to the cellulose. The gelling of the adhesive allows a reduction in the level of moisture added to the cellulose fibres to below 20%, resulting in an insulation with rapid drying times, reduced risk for fungal growth, lower applied densities and a total moisture content below 30% on an oven dry basis.

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