Scrim attachment system

Patent metadata

Field	Value
Publication number	US-10352041-B2
Application number	US-201715720176-A
Country	US
Kind code	B2
Filing date	Sep 29, 2017
Priority date	Oct 28, 2015
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

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 method of forming a ceiling panel, the method comprising:
a) applying an aqueous mixture comprising water and a gel-forming polymer to at least one of a first major substrate surface of an acoustical substrate or to a second major scrim surface of a porous scrim in a substantially non-discrete pattern,
b) bringing the first major substrate surface of the acoustical substrate into contact with the second major scrim surface of the porous scrim to form a laminate structure; and
c) drying the laminate structure to adhere the acoustical substrate and the porous scrim together;
wherein the gel-forming polymer is present in an amount ranging from 1 wt. % to 20 wt. % based on the total weight of the aqueous mixture and the aqueous mixture is applied to at least one of the first major substrate surface of the acoustical substrate or the second major scrim surface of the porous scrim in an amount ranging from 30 g/m 2 to 170 g/m 2 .

2. The method of forming a ceiling panel according to claim 1 , wherein the gel-forming polymer is present in an amount ranging from 3 wt. % to 12 wt. % based on the total weight of the aqueous mixture.

3. The method of forming a ceiling panel according to claim 1 , wherein subsequent to step c) the gel-forming polymer forms a discontinuous layer between the acoustical substrate and the porous scrim.

4. The method of forming a ceiling panel according to claim 1 , wherein the aqueous mixture has a viscosity ranging from 100 cPs to 2,000 cPs at temperature ranging from 21° C. to 24° C.

5. The method of forming a ceiling panel according to claim 1 , wherein the gel-forming polymer comprises a film-forming polymer selected from the group consisting of polyvinyl alcohol (PVOH), starch polymer, polysaccharide polymer, cellulosic polymer, protein solution polymer, acrylic polymer, polymaleic anhydride, or a combination of two or more thereof.

6. The method of forming a ceiling panel according to claim 5 , wherein at least 85% of the polyvinyl alcohol has been hydrolyzed.

7. The method of forming a ceiling panel according to claim 6 , wherein at least 90% of the polyvinyl alcohol has been hydrolyzed.

8. The method of forming a ceiling panel according to claim 1 , wherein subsequent to step c), the amount of gel-forming polymer is present between the acoustical substrate and the porous scrim ranges from 4 g/m 2 to about 13 g/m 2 .

9. A method of forming a ceiling panel, the method comprising:
a) applying an aqueous mixture in a non-discrete pattern to a first major surface of a substrate or a second major surface of a scrim, the aqueous mixture including water and a gel-forming polymer comprising polyvinyl alcohol, wherein at least 85% of the polyvinyl alcohol has been hydrolyzed;
b) bringing the first major surface of the substrate into contact with the second major surface of the scrim to form a laminate structure; and
c) drying the laminate structure to adhere the substrate and the scrim together.

10. The method of forming a ceiling panel according to claim 9 , wherein the aqueous mixture has a viscosity ranging from 100 cPs to 2,000 cPs at temperature ranging from 21° C. to 24° C.

11. The method of forming a ceiling panel according to claim 9 , wherein at least 90% of the polyvinyl alcohol has been hydrolyzed.

12. The method of forming a ceiling panel according to claim 9 , wherein subsequent to step c), the amount of gel-forming polymer is present between the acoustical substrate and the porous scrim ranges from 4 g/m 2 to about 13 g/m 2 .

13. The method of forming a ceiling panel according to claim 9 , wherein the gel-forming polymer is present in the aqueous mixture of step a) in an amount ranging from 1 wt. % to 20 wt. % based on the total weight of the aqueous mixture.

14. The method of forming a ceiling panel according to claim 13 , wherein the gel-forming polymer in the aqueous mixture of step a) is present in an amount ranging from 3 wt. % to 12 wt. % based on the total weight of the aqueous mixture.

15. The method of forming a ceiling panel according to claim 9 , wherein the gel-forming polymer comprises a film-forming polymer selected from the group consisting of polyvinyl alcohol (PVOH), starch polymer, polysaccharide polymer, cellulosic polymer, protein solution polymer, acrylic polymer, polymaleic anhydride, or a combination of two or more thereof.

16. The method of forming a ceiling panel according to claim 9 , wherein subsequent to step c) the gel-forming polymer forms a discontinuous layer between the acoustical substrate and the porous scrim.

17. The method of forming a ceiling panel according to claim 9 , wherein the aqueous mixture of step a) is applied in an amount ranging from 30 g/m 2 to 170 g/m 2 .

Assignees

• Armstrong World Ind Inc
• Awi Licensing Llc

Inventors

• Wiker Anthony L
• Oleske Peter J
• Lu Lida

Classifications

• E04B9/04 Primary

  comprising slabs, {panels,} sheets or the like · CPC title

• E04B9/045 Primary

  being laminated · CPC title

• E04B9/064

  comprising extruded supporting beams · CPC title

• E04B9/067

  with inverted T-shaped cross-section · CPC title

• E04B1/86

  slab-shaped · CPC title