# US 10,370,860 B2 · Multi-functional underlayment acoustical mat and system

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- Number: US 10,370,860 B2
- Document ID: US10370860B2
- Status: Granted
- Kind: B2
- Application number: 12/564,204
- Filed: 2009-09-22
- Published: 2010-04-01
- Granted: 2019-08-06
- Earliest claimed: 2008-09-26
- Assignees: United States Gypsum Company
- Applicants: Dennis Albert Socha
- Inventors: Dennis Albert Socha
- Web page: https://patentgrep.com/patent/US10370860B2

## CPC

- E04F 15/20: for sound insulation
- B32B 5/022: {Non-woven fabric}
- B32B 27/12: next to a fibrous or filamentary layer
- E04F 15/203: {Separately-laid layers for sound insulation}
- E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

## Abstract

An acoustic isolation mat for placement between a subfloor and a finished floor with a poured underlayment includes a bottom layer of entangled fibers contacting the subfloor; and a top layer attached to the bottom layer and being a water resistant nonwoven polymeric fabric over which the underlayment is poured.

## Claims

### Claim 1

An acoustic isolation flooring system consisting of:
a sound reduction mat of:
a first layer made of two separate material layers made of different materials that are bonded to each other, wherein one of said material layers is a water-resistant and wear-resistant fabric and another of said material layers is a water-resistant, sound dampening material; and
a single, second layer of a water resistant, nonwoven polymeric fabric including a plurality of tangled fibers and space between said fibers that defines an air layer for decreasing sound transmission through said second layer;
said first layer of water and wear-resistant fabric is bonded to said second layer of nonwoven polymeric fabric, and an underlayment of a finished floor is poured over said first layer of said water and wear-resistant fabric.

### Claim 2 (depends on 1)

The system of claim 1, wherein said water and wear-resistant fabric is laminated to said nonwoven polymeric fabric, and said latter fabric is pinbonded MB fabric.

### Claim 3 (depends on 1)

The system of claim 1 wherein said water and wear-resistant fabric is SM-250 polypropylene and said nonwoven polymeric fabric is a pinbonded MB fabric.