초록 ▼

The present invention provides for an acoustically absorbent porous panel that is both rigid and resistant to sagging caused by moisture. The acoustically absorbent porous panel is comprised of at least two layers. The first layer is a facing layer formed from a cured aqueous foamed cementitious mat

The present invention provides for an acoustically absorbent porous panel that is both rigid and resistant to sagging caused by moisture. The acoustically absorbent porous panel is comprised of at least two layers. The first layer is a facing layer formed from a cured aqueous foamed cementitious material. The foamed cementitious material comprises on a wet basis about 53% to about 68% by weight cement, about 17% to about 48% by weight water, about 0.05% to about 5% by weight fiber, and about 0.01% to about 10% by weight surfactant. Additionally, pores distributed within the cured material comprising about 75% to about 95% by volume of the material. The second layer is a backing layer that is affixed to the facing layer.

대표청구항 ▼

The present invention provides for an acoustically absorbent porous panel that is both rigid and resistant to sagging caused by moisture. The acoustically absorbent porous panel is comprised of at least two layers. The first layer is a facing layer formed from a cured aqueous foamed cementitious mat

The present invention provides for an acoustically absorbent porous panel that is both rigid and resistant to sagging caused by moisture. The acoustically absorbent porous panel is comprised of at least two layers. The first layer is a facing layer formed from a cured aqueous foamed cementitious material. The foamed cementitious material comprises on a wet basis about 53% to about 68% by weight cement, about 17% to about 48% by weight water, about 0.05% to about 5% by weight fiber, and about 0.01% to about 10% by weight surfactant. Additionally, pores distributed within the cured material comprising about 75% to about 95% by volume of the material. The second layer is a backing layer that is affixed to the facing layer. r can be quickly removed following application of the graphic to the substrate; a substantially contiguous layer of a thermoplastic containing material, the thermoplastic material being on the adhesive; and a substantially contiguous layer of a means for adhering a graphic, the graphic adherent means being on the layer of thermoplastic containing material to provide a flexible laminate from which graphics may be cut. 2. The laminate of claim 1 wherein the thermoplastic is selected from the group consisting of polyurethane or vinyl, wherein the vinyl is selected from the group consisting of polyvinyl chloride, partially carboxylated polyvinyl chloride and non-carboxylated polyvinyl chloride. 3. The laminate of claim 1 where the plastic film is comprised of polyester. 4. The laminate of claim 3 where the polyester film has a thickness between 3.0 to 7.0 mils. 5. The laminate of claim 1 where the adhesive is a substantially contiguous layer on the second surface of the plastic film. 6. The laminate of claim 5 where the layer of adhesive is from 0.5 to 5.0 mils thick. 7. The laminate of claim 1 wherein the means for adhering a graphic is responsive to heat to adhere said substantially continguous layer of a means for adhering a graphic to a substrate, the adhesive on the second surface of the plastic film has a peel strength, immediately after application of said substantially continguous layer of a means for adhering a graphic to a substrate when it is desirable to remove the carrier, which is less than the corresponding peel strength of said means, whereby the carrier may be removed while said substantially continguous layer of a means for adhering a graphic is still at substantially the temperature for adhering it to a substrate. 8. The laminate of claim 1 wherein the substrate is a fabric.