Facer for insulation boards and other construction boards
View Patent ↗The subject invention relates to a facer which is comprised of a breathable film and a glass mat, wherein the breathable film and the glass mat are bonded together with an adhesive, wherein the breathable film is comprised of a breathable polymeric material selected from the group consisting of polyolefins, nylons, polyesters, and thermoplastic elastomers, and wherein the facer is water resistant. The facers of this invention can be employed in manufacturing construction board, such as polyisocyanurate boards, polystyrene boards, or gypsum boards. The present invention accordingly more specifically discloses a construction board which is comprised of a rigid sheet and a facer, wherein the facer is bonded to at least one side of said rigid sheet, wherein the rigid sheet is comprised of a member selected from the group consisting of gypsum, blown polystyrene, and polyisocyanurate, wherein the facer is comprised of a breathable polymeric material selected from the group consisting of polyolefins, nylons, polyesters, and thermoplastic elastomers, wherein the breathable polymeric material is bonded to another substrate, such as a glass mat with an adhesive, and wherein the facer is water resistant.
1. A construction board which is comprised of a rigid sheet and a facer, wherein the facer is bonded to at least one side of said rigid sheet, wherein the rigid sheet is comprised of polyisocyanurate, wherein the facer is comprised of a breathable film and a glass mat, wherein the breathable film and the glass mat are bonded together with an adhesive, wherein the breathable film is comprised of a polymeric material selected from the group consisting of polyolefins, nylons, polyesters, and thermoplastic elastomers, wherein the glass mat is porous, and wherein the facer is water resistant.
2. A construction board as specified in claim 1 wherein the rigid sheet is reinforced with a fiberglass mesh.
3. A construction board as specified in claim 1 wherein the facer is bonded to the rigid sheet with an adhesive.
4. A construction board as specified in claim 3 wherein the adhesive is a breathable adhesive.
5. A construction board as specified in claim 3 wherein the adhesive is applied to only a portion of the surface area of the facer.
6. A construction board as specified in claim 1 wherein the polymeric material is a breathable nylon.
7. A construction board as specified in claim 1 wherein the polymeric material is a breathable thermoplastic elastomer.
8. A construction board as specified in claim 1 wherein the breathable film is a microporous stretched film which is comprised of two incompatible polymers.
9. A construction board as specified in claim 1 wherein the breathable film is 0.5 mils to 5 mils thick.
10. A construction board as specified in claim 1 wherein the breathable film is 0.9 mils to 1.2 mils thick.
11. A construction board as specified in claim 1 wherein the breathable film is a monolithic membrane which is comprised of a thermoplastic elastomer, wherein the breathable film allows for the transmission of vapors by active diffusion, and wherein the breathable film is a barrier to liquid water.
12. A construction board as specified in claim 1 wherein said facer consists of the breathable film and the glass mat.
13. A construction board as specified in claim 11 wherein said facer consists of the breathable film and the glass mat.