Fibrous laminate floor underlayment with improved acoustical insulation and breathable barrier protection
US10689863B2 · kind B2 · utility
0Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2015 |
| Grant date | Jun 23, 2020 |
| Priority date | — |
| Expiry date | Jan 12, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2419/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention relates to a floor underlayment that may be positioned directly in contact with the underside surface of a finished floor and comprise more than one layer such as a first layer pattern-unbonded nonwoven web and a second layer microporous film. Additional layers may comprise a meltblown nonwoven layer and a spunbond layer. The floor underlayment of the present invention may exhibit a sound pressure level (SPL in dB at 800 Hz or 1600 Hz) reduction IIC of about 30 to about 40.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.