Room temperature crosslinked foam

摘要

Low rise, user friendly latex foams for sealing insulative cavities of a building are provided. The foams may be applied to the interface of the sheathing and the studs within the insulative cavities to reduce air leaks. The latex foams may also be applied to the face of the studs to obtain an additional seal against air infiltration. The foam can be used to affix fiberglass batts, batt flanges, and vapor barriers to the framing without mechanical fasteners. A tackifier may be added to impart an adhesive quality to the foam. The tacky nature of the foam permits the drywall or vapor barrier to be repositioned without damage. Drywall is held onto the face of the studs by the tacky foam while mechanical fasteners are inserted to permanently affix the drywall to the framing. The compressive nature of the foam permits drywall to be attached without significant bowing or detachment.

主权项

1. A method of forming an interior surface of a building wall, said building wall including a frame formed of a plurality of studs interconnecting a top plate and a bottom plate, thereby forming insulative cavities between said studs, said building wall being backed by sheathing, each of said studs having an interior face, comprising the steps of:
spraying a material selected from a foamable material and a foamable reaction mixture to said interior face of said studs, wherein said spraying comprises: a) delivering a first component including at least one functionalized resin selected from a functionalized water-dispersible resin and a functionalized water-soluble resin through a first delivery line to an application device; b) delivering a second component including a crosslinking agent that crosslinks at or about room temperature into said application device, wherein one or both of said first and second component includes a blowing agent, and wherein one or both of said first and second component includes a tackifier; and c) mixing said first and second components within said application device to form said foamable reaction mixture by permitting said crosslinking agent and said at least one functionalized resin to chemically react while said blowing agent initiates a foaming reaction and forms a tacky, elastomeric foam; wherein the material is sprayed along an interface between the exterior sheathing and the bottom plate, along the top plate, and along the vertical length of the studs; and positioning an interior member on said elastomeric foam, wherein said elastomeric foam affixes said interior member to said interior face of said studs, and wherein said elastomeric foam, said foamable material and said foamable reaction mixture are free of isocyanate.