Finishing mortar for sound-absorbing coating of inner walls, ceilings and the like in buildings

• US 6,379,454 B1
• Filed: 08/04/1999
• Issued: 04/30/2002
• Est. Priority Date: 12/16/1996
• Status: Expired due to Term

• Current Assignee: John Fellert
• Original Assignee: John Fellert
• Inventors: Fellert, John
• Primary Examiner(s): LANGEL, WAYNE A
• Application Number:
  US09/331,132
• Time in Patent Office: 1,000 Days
• Field of Search: 252/378, 252/378.P, 521/45, 181/294, 106/698, 106/DIG.2
• US Class Current: 106/698
• CPC Class Codes: C04B 14/04 Silica-rich materials; Silicates
• CPC Class Codes: C04B 14/18 Perlite
• CPC Class Codes: C04B 18/24 Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper , cork
• CPC Class Codes: C04B 18/248 from specific plants, e.g. hemp fibres
• CPC Class Codes: C04B 2111/00482 Coating or impregnation materials
• CPC Class Codes: C04B 2111/00577 applied by spraying mixtures shapable by spraying C04B2111/00155
• CPC Class Codes: C04B 2111/52 Sound-insulating materials
• CPC Class Codes: C04B 28/02 containing hydraulic cements other than calcium sulfates
• CPC Class Codes: Y02W 30/91 Use of waste materials as fillers for mortars or concrete
• CPC Class Codes: Y10S 106/02 Perlite

Abstract

The invention relates to a finishing mortar for sound-absorbing coating of inner walls, ceilings and the like in buildings. It may be applied directly on concrete or some other carrying material or on underlying insulation material, such as mineral wool. The finishing mortar according to the invention is characterized in that it comprises cotton fibres and expanded mineral, such as perlite.

Claims

1. Cement free finishing mortar for use as a sound-absorbing coating on the inner walls and ceilings of buildings consisting essentially of:

perlite; and

cotton fibres, wherein a weight ratio of perlite to cotton fibres is in the range of 01 to 2.5 and said mortar is a water dispersion having a content of solids in the range of 200 to 300 g/l.

2. Mortar according to claim 1 wherein said weight ratio is 0.8.

3. Mortar according to claim 1 wherein said perlite has a particle size of less than 1 mm.

4. Mortar according to claim 1 wherein said perlite has a particle size of less than 3 mm.

5. Mortar according to claim 1 wherein said perlite has a particle size of less than 5 mm.

6. Mortar according to claims 3, 4, or 5, wherein a dry volume weight of said perlite is in the range of 35 to 125 kg/m³ dependent on said particle size.

7. Mortar according to claim 1, further consisting essentially of an additive selected from the group consisting of textile fibres, plant fibres from coniferous trees, mica, biotite, muscovite, silicates, colour pigment and combinations thereof.

8. Mortar according to claim 1, wherein said mortar comprises a diluted sprayable solutions.

9. Mortar according to claim 1, wherein said mortar comprises a diluted spreadable solution.