Insulating product comprising loose-fill mineral wool

Patent metadata

Field	Value
Publication number	US-11952688-B2
Application number	US-202117374138-A
Country	US
Kind code	B2
Filing date	Jul 13, 2021
Priority date	Dec 29, 2015
Publication date	Apr 9, 2024
Grant date	Apr 9, 2024

Abstract

Loose-fill insulating products may include mineral wool, in particular glass wool or rock wool, in the form of down, nodules, or flakes, which are obtainable by an aeration that allows the mineral wool to be expanded. The mass distribution of the agglomerates may be obtained by screening 2 to 5 g of insulating product using a vibrating sieve shaker with a stack of screens and a maximum amplitude of oscillation of 3 mm set to 1.5 to 2.5 mm, 1.8 to 2.2 mm, or 2 mm, for 5 minutes, satisfies a relationship(% agglomerates 6-13)−(% agglomerates<6)≥5%,where (% agglomerates 6-13) is mass percentage of agglomerates passing through 6 mm and 13 mm screens, and (% agglomerates<6) is mass percentage of agglomerates passing through a 6 mm screen.

First claim

The invention claimed is:

1. A loose-fill insulating product, comprising:
rock wool in the form of down, nodules, or flakes,
wherein a mass distribution of the agglomerates obtained by screening 2 to 5 g of 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 for 5 minutes, satisfies a relationship
(% agglomerates 6-13)−(% agglomerates<6)≥5%,

wherein (% agglomerates 6-13) is a mass percentage of agglomerates that pass through screens of both 6 mm and 13 mm, and (% agglomerates <6) is the mass percentage of agglomerates passing through a 6 mm screen, and
wherein the mass percentage of agglomerates passing through the 6 mm screen is greater than 10%.

2. The insulating product of claim 1 , satisfying the relationship
(% agglomerates 6-13)−(% agglomerates<6)≥10%.

3. The insulating product of claim 1 , wherein the mass percentage of agglomerates passing through the 6 mm screen is less than 40%.

4. The insulating product of claim 1 , wherein the mass percentage of agglomerates passing through the 13 mm screen is less than 95%.

5. The insulating product of claim 1 , wherein the mass percentage of agglomerates passing through screens of both 6 mm and 13 mm is greater than 40%.

6. The insulating product of claim 1 , wherein the mass percentage of agglomerates passing through screens of both 6 mm and 19 mm is greater than 50%.

7. The insulating product of claim 1 , wherein the mass percentage of agglomerates passing through a 25 mm screen or a 34 mm screen is 100%.

8. The insulating product of claim 1 , wherein the rock wool comprises entangled mineral fibers with a fasonaire value of at least 250.

9. An insulating product comprising rock wool in the form of down, nodules, or flakes, exhibiting a density “d” in kg/m 3 and a thermal conductivity “λ” in mW/(m·K) satisfying a relationship for densities d comprised between 50 and 80 kg/m 3 :
λ<−0.1 d+ 45.

10. An insulating product comprising rock wool in the form of down, nodules, or flakes, exhibiting an airflow resistance:
greater than or equal to 3 kPa·s/m 2 for a density comprised between 40 and 50 kg/m 3 ; and/or
greater than or equal to 10 kPa·s/m 2 for a density comprised between 60 and 80 kg/m 3 .

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

13. The insulating product of claim 1 , wherein the mass percentage of agglomerates passing through the 6 mm screen is greater than 20%.

14. The insulating product of claim 1 , wherein the mass percentage of agglomerates passing through the 6 mm screen is in a range of from greater than 10 to less than 45%.

15. The insulating product of claim 3 , wherein the mass percentage of agglomerates passing through the 6 mm screen is less than 40%.

16. The insulating product of claim 14 , wherein the mass percentage of agglomerates passing through the 6 mm screen is less than 30%.

17. The insulating product of claim 1 , wherein the mass percentage of agglomerates passing through the 13 mm screen is greater than 50%.

18. The insulating product of claim 4 , wherein the mass percentage of agglomerates passing through the 13 mm screen is greater than 50%.

19. The insulating product of claim 9 , wherein the density and thermal conductivity satisfy a relationship for densities comprised between 50 and 80 kg/m 3 :
λ<−0.1 d+ 44.5.

Assignees

• Saint Gobain Isover

Inventors

• DOVETTA Nicolas
• Siband Mathilde
• DE FRANCQUEVILLE Foucault

Classifications

• D04H1/732 Primary

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

• C03C13/06

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

• D04H1/4209 Primary

  Inorganic fibres · CPC title

• D04H1/4218

  Glass fibres · CPC title