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1. (WO2019032393) TAPIS DE RÉNOVATION DE PLAFOND
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS:

1. A renovation mat comprising:

a non-woven web of fibres;

a first binder;

a filler; and

a second binder;

wherein the filler comprises at least one of aluminium trihydrate, calcium carbonate, magnesium oxide, magnesium hydroxide, titanium dioxide, talc, barium sulphate, kaolin, or mixtures thereof, and is present in an amount of 100 g/m2to 500 g/m2;

and wherein the renovation mat has:

an air porosity of at least 100 l/m2/sec at 100 Pa according to IS09237; and

a ΔΕ <2.

2. The renovation mat of claim 1, wherein the web of fibres comprises fibres made from at least one of polypropylene, polyethylene, polyester, polyethylene terephthalate, polybutylene terephthalate, aramid, nylon, rayon, viscose, polyimide, polyetherimide, polyamide, carbon fibre, cotton, hemp, kenaf, jute, cellulose, glass, and basalt.

3. The renovation mat of claim 2, wherein the fibres are glass fibres.

4. The renovation mat of any one of claims 1 to 3, wherein the mat has a ΔΕ < 1.

5. The renovation mat of any one of claims 1 to 4, wherein the web of fibres and the first binder have an area weight of 40 g/m2 to 200 g/m2 prior to inclusion of the filler.

6. The renovation mat of any one of claims 1 to 5, wherein the filler comprises

aluminium trihydrate in an amount of at least 30% by weight of the solids in the filler.

7. The renovation mat of any one of claims 1 to 5, wherein the filler comprises

aluminium trihydrate in an amount of at least 50% by weight of the solids in the filler.

8. The renovation mat of any one of claims 1 to 7, wherein the filler comprises at least one of magnesium hydroxide, titanium dioxide, kaolin, or mixtures thereof.

9. The renovation mat of any one of claims 1 to 7, wherein the filler comprises titanium dioxide.

10. The renovation mat of any one of claims 1 to 9, wherein the filler is present in an amount of 150 g/m2to 310 g/m2.

11. The renovation mat of any one of claims 1 to 10, wherein at least one of the first binder and the second binder is selected from a latex binder, an acrylic binder, a polyvinyl alcohol binder, a vinyl ester binder, an epoxy binder and combinations thereof.

12. The renovation mat of any one of claims 1 to 11 , wherein at least one of the first binder and the second binder comprises polyvinyl alcohol.

13. The renovation mat of any one of claims 1 to 12, wherein the mat has a thickness of 0.5 mm to 2.5 mm.

14. The renovation mat of any one of claims 1 to 13, further comprising a finishing coating.

15. Use of a renovation mat as defined in any one of claims 1 to 14 in a ceiling tile

framework.

16. A method of improving the aesthetics of a ceiling comprised of a plurality of tiles, the method comprising positioning a renovation mat under the tiles, the renovation mat being as defined in any one of claims 1 to 14.