Wool surface treated with hydrophobic agent and acoustic panels made therefrom

Patent metadata

Field	Value
Publication number	US-2018339935-A1
Application number	US-201715606333-A
Country	US
Kind code	A1
Filing date	May 26, 2017
Priority date	May 26, 2017
Publication date	Nov 29, 2018
Grant date	—

Abstract

A method of preparing a fibrous panel including surface treating a mineral wool with a water repellent agent to provide a water-repellent surface treated mineral wool, admixing the water-repellent surface-treated mineral wool with water to provide a slurry, and dewatering and drying the slurry to provide a fibrous panel. A method of preparing a mineral wool having a surface treated with a water repellent agent including contacting a water repellent agent emulsion with a mineral wool and drying the mineral wool, and a method of preparing a water-repellent surface-treated fibrous panel including mineral wool having a surface pre-treated with a water repellent agent are also provided.

First claim

What is claimed:

1 . A method of preparing a fibrous panel comprising:
surface treating a mineral wool with a water repellent agent to provide a water-repellent surface-treated mineral wool;
admixing the water-repellent surface-treated mineral wool with water to provide a slurry; and
dewatering and drying the slurry to provide a fibrous panel.

2 . The method of claim 1 , wherein surface-treating the mineral wool includes providing the water repellent agent in an amount in a range of about 0.01% to about 0.20% by weight, based on the weight of the surface-treated mineral wool.

3 . The method of claim 1 , wherein surface treating the mineral wool comprises contacting a water repellent agent emulsion with the mineral wool and drying the mineral wool.

4 . The method of claim 1 , wherein the water repellent agent comprises at least one of polydimethylsiloxane, polymethylhydrogensiloxane, and a combination thereof.

5 . A method of preparing a mineral wool having a surface treated with a water repellent agent comprising:
contacting a water repellent agent emulsion with a mineral wool; and drying the mineral wool.

6 . The method of claim 5 , wherein the water repellent agent is provided in an amount in a range of about 0.01% to about 0.20% by weight, based on the weight of the surface-treated mineral wool.

7 . The method of claim 5 , wherein the contacting comprises spraying a water repellent agent emulsion solution into a cupola collection chamber.

8 . The method of claim 7 , wherein the contacting comprises cooling and coating the mineral wool with the water repellent agent.

9 . The method of claim 5 , wherein the water repellent agent comprises at least one of polydimethylsiloxane, polymethylhydrogensiloxane, and a combination thereof.

10 . A fibrous panel, comprising water-repellent surface-treated mineral wool having a surface pre-treated with a water repellent agent.

11 . The fibrous panel of claim 10 , wherein the panel further comprises starch.

12 . The fibrous panel of claim 10 , wherein the mineral wool is surface coated with about 0.01% to about 0.20% by weight of water repellent agent, based on the total weight of the surface-treated mineral wool.

13 . The fibrous panel of claim 10 , wherein the panel is characterized by about a 50 lbs/MSF decrease in water holding relative to an equivalent fibrous panel wherein the mineral wool was not surface treated with a water repellent agent.

14 . The fibrous panel of claim 13 , wherein the panel is characterized by about a 100 lbs/MSF decrease in water holding relative to an equivalent fibrous panel wherein the mineral wool was not surface treated with a water repellent agent.

15 . The fibrous panel of claim 10 , wherein the water repellent agent comprises at least one of polydimethylsiloxane, polymethylhydrogensiloxane, and a combination thereof.

16 . The fibrous panel of claim 10 , wherein the panel has eNRC value increase of at least about 0.05 relative to an equivalent fibrous panel wherein the mineral wool was not surface treated with a water repellent agent.

17 . The fibrous panel of claim 10 , wherein the panel is characterized by an increase in water bulking of about 40% to 50% relative to the water bulking of an equivalent fibrous panel wherein the mineral wool was not surface treated with a water repellent agent.

Assignees

• Usg Interiors Llc

Inventors

• Luan Wenqi
• Brown Martin
• Yu Qing
• Bogen Scott A
• Figi Carlos

Classifications

• C04B2111/52

  Sound-insulating materials · CPC title

• G10K11/162

  Selection of materials · CPC title

• C04B30/02

  containing fibrous materials · CPC title

• C04B26/28

  Polysaccharides or derivatives thereof · CPC title

• C04B14/48

  Metal · CPC title