Patent ID: 6837014
Filing Date: 2005-01-04
Classification: B29C,B29L,B32B,E04F

Abstract:
1. A prefabricated underlay material for location between an upper surface of a load-bearing floor and a parquet or other continuous surface material, which underlay material comprises: a substantially flexible first sheet material having a first surf ace with a surface area; dampening projections formed of porous resilient material on at least said first surface of the first sheet material, distributed along said first surface and having a total projection area less than said area of the first sheet material, wherein: the underlay material further comprising a substantially flexible second sheet material having a third surface to which said porous polymer(s) forming the dampening projections is also bonded by effect of its/their material properties at the time of manufacture, and which second sheet material is located on the opposite side of the dampening projections relative to the first sheet material.