Insulating product comprising loose-fill mineral wool

Patent metadata

Field	Value
Publication number	US-11098423-B2
Application number	US-201616066762-A
Country	US
Kind code	B2
Filing date	Dec 23, 2016
Priority date	Dec 29, 2015
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

Loose-fill insulating products include mineral wool, in particular glass wool or rock wool, in the form of down, nodules or flakes, which are obtained from a method including an aeration step that allows the mineral wool to be expanded.

First claim

The invention claimed is:

1. An insulating product, comprising:
loose-fill glass wool in the form of down,
wherein a mass distribution of agglomerates obtained by screening 2 to 5 g of the insulating product using a vibrating sieve shaker comprising a stack of screens and a maximum amplitude of oscillation of 3 mm set to between 1.5 and 2.5 mm, exhibits:
a mass percentage of agglomerates passing through a 6 mm screen of less than 5 wt %, and/or
a mass percentage of agglomerates passing through a 13 mm screen of less than 50 wt %.

2. The insulating product of claim 1 , wherein a mass percentage of agglomerates passing through both 25 mm and 32 mm screens with respect to the agglomerates passing through the 32 mm screen is less than 10 wt %.

3. The insulating product of claim 1 , wherein a mass percentage of agglomerates passing through both 19 mm and 25 mm screens with respect to a mass of agglomerates passing through a 32 mm screen is greater than 10 wt %.

4. The insulating product of claim 1 , wherein a mass percentage of agglomerates passing through both 13 mm and 25 mm screens with respect to a mass of agglomerates passing through a 32 mm screen is greater than 50%.

5. The insulating product of claim 1 , wherein a mass percentage of agglomerates passing through both 13 mm and 32 mm screens with respect to a mass of agglomerates passing through the 32 mm screen is greater than 60%.

6. An insulating product, comprising:
loose-fill glass wool in the form of down,
wherein the insulating product has a density “d” in kg/m3 and a thermal conductivity “λ” in mW/(m·K) that satisfies the following relationship for densities d comprised between 7 and 14 kg/m 3 ;
λ<A+0.3d+205/d, where A is comprised between 17 and 23, inclusive of endpoints.

7. An insulating product, comprising:
loose-fill glass wool in the form of down,
wherein the insulating product exhibits, for a density “d” comprised between 9.5 and 10.5 kg/m 3 , a thermal conductivity “λ” less than 42 mW/(m·K).

8. An insulating product, comprising:
loose-fill glass wool in the form of down,
wherein the insulating product exhibits an airflow resistance greater than or equal to 1 kPa·s/m 2 , for a density comprised between 10 and 20 kg/m 3 .

9. The insulating product of claim 1 , wherein the glass wool exhibits a micronaire value:
less than 20 L/min, and
greater than 2 L/min.

10. The insulating product of claim 1 , comprising at least 75% glass wool with respect to the total mass of the insulating product.

11. The insulating product of claim 1 , wherein the maximum amplitude of oscillation of 3 mm set to between 1.8 and 2.2 mm.

12. The insulating product of claim 1 , wherein the maximum amplitude of oscillation of 3 mm set to 2 mm.

13. The insulating product of claim 1 , wherein the wool is treated with a higher pressure than standard pressure.

14. The insulating product of claim 1 , wherein a ratio of the density prior to aeration to the density after aeration is higher than 2.

15. The insulating product of claim 1 , wherein a ratio of the density prior to aeration to the density after aeration is higher than 2.5.

16. The insulating product of claim 1 , wherein the mass percentage of agglomerates passing through a 6 mm screen of less than 5 wt %.

17. The insulating product of claim 1 , wherein the mass percentage of agglomerates passing through a 6 mm screen of less than 3 wt %.

18. The insulating product of claim 1 , wherein the mass percentage of agglomerates passing through a 13 mm screen of less than 50 wt %.

19. The insulating product of claim 1 , wherein the mass percentage of agglomerates passing through a 13 mm screen of less than 40 wt %.

20. The insulating product of claim 16 , comprising at least 75 wt. % of mineral wool, with respect to total insulating product mass,
wherein the mineral wool is selected from group consisting of the glass wool and rock wool.

Assignees

• Saint Gobain Isover

Inventors

• DOVETTA Nicolas
• Siband Mathilde
• DE FRANCQUEVILLE Foucault

Classifications

• D04H1/4209 Primary

  Inorganic fibres · CPC title

• D01G9/00

  Opening or cleaning fibres, e.g. scutching cotton (scutching flax or like fibres D01B; making cellulose wadding in papermaking machines D21F11/14) · CPC title

• C03C13/06

  Mineral fibres, e.g. slag wool, mineral wool, rock wool · CPC title

• D04H1/732 Primary

  by fluid current, e.g. air-lay · CPC title

• C03C2213/00

  Glass fibres or filaments · CPC title