Scrim attachment system

Patent metadata

Field	Value
Publication number	US-11549257-B2
Application number	US-201916503305-A
Country	US
Kind code	B2
Filing date	Jul 3, 2019
Priority date	Oct 28, 2015
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

The present invention is directed to ceiling panels formed from a porous scrim that is coupled to an acoustical substrate using a scrim attachment system that includes an adhesive.

First claim

The invention claimed is:

1. A building panel comprising:
a substrate having a first major substrate surface opposite a second major substrate surface;
a scrim having a first major scrim surface opposite a second major scrim surface;
a dry-state adhesive adhering the first major substrate surface of the substrate to the second major scrim surface of the scrim, the dry-state adhesive comprising a gel-forming film-forming polymer; and
wherein the dry-state adhesive is present in an amount that ranges from 4 g/m 2 to 13 g/m 2 .

2. The building panel according to claim 1 , wherein the substrate has a density ranging from 40 kg/m 3 to 190 kg/m 3 .

3. The building panel according to claim 1 , wherein the substrate comprises a fibrous material.

4. The building panel according to claim 3 , wherein the fibrous material is selected from the group consisting of mineral wool, fiberglass, cellulosic fibers, polymer fibers, protein fibers, and combinations thereof.

5. The building panel according to claim 1 , wherein the gel-forming film-forming polymer comprises at least one of polyvinyl alcohol, starch polymer, polysaccharide polymer, cellulosic polymers, protein solution polymer, an acrylic polymer, polymaleic anhydride, or a combination of two or more thereof.

6. The building panel according to claim 1 , wherein the gel-forming film-forming polymer comprises polyvinyl alcohol that is at least 85% hydrolyzed.

7. The building panel according to claim 1 , wherein the scrim comprises a non-woven structure of fiberglass.

8. The building panel according to claim 1 , wherein the substrate has a porosity ranging from about 75% to about 95%.

9. The building panel according to claim 1 , wherein the gel-forming film-forming polymer comprises polyvinyl alcohol and wherein the gel-forming film-forming polymer is present from about 4.6 g/m 2 to about 7.7 g/m 2 of polymer.

10. The building panel according to claim 9 , wherein the polyvinyl alcohol is at least 85% hydrolyzed.

11. The building panel according to claim 1 , wherein the scrim has an airflow resistance ranging from about 40 MKS rayls to about 200 MKS rayls.

12. The building panel according to claim 1 , wherein the dry-state adhesive provides a pull strength between the substrate and the scrim, the pull strength ranging from about 30 lbs/6 in 2 to 104 lbs/6 in 2 .

Assignees

• Armstrong World Ind Inc
• Awi Licensing Llc

Inventors

• Wiker Anthony L
• Oleske Peter J
• Lu Lida

Classifications

• E04B9/241

  with the slabs, panels, sheets or the like positioned on the upperside of the horizontal flanges of the supporting construction · CPC title

• E04B9/064

  comprising extruded supporting beams · CPC title

• E04B9/067

  with inverted T-shaped cross-section · CPC title

• E04B1/99

  Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound (E04B1/82 takes precedence; acoustics in general G10K11/00; electric signal processing for producing a reverberation or echo sound G10K15/08) · CPC title

• E04B9/045 Primary

  being laminated · CPC title