Parquet underlay material
AssigneeVircon Oy
InventorThomas Virtanen
Life of this patent
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Abstract
A prefabricated underlay material (1) for location between upper surface of a load-bearing floor (8) and a continuous surface material (9), which underlay material comprises a substantially flexible sheet material (2) and dampening projections (3) formed of porous resilient material on one surface of the sheet material and distributed along the surface. Dampening projections (3) comprise strips (13) of foamed polymer or polymer mixture bonded to a first surface (11) of the sheet material without deformation of the surface thereof, which strips are located continuous, or intermittently continuous, with intervals (S) and are either principally straight or substantially undulating.
Claims32
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 surface 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:
- said first surface extends continuously and flat beneath the dampening projections and in the area between them;
- and
- said dampening projections formed of porous resilient material:
- are made of a foamed polymer or polymer mixture bonded to said flat first surface by effect of its/their material properties at the time for manufacture;
- and
- are principally straight continuous or intermittently continuous strips located with intervals, or substantially undulating continuous or intermittently continuous strips located with intervals.
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 surface 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:
- said first surface extends continuously beneath the dampening projections;
- and
- said dampening projections formed of porous resilient material:
- are a foamed polymer or polymer mixture bonded to said first surface without glue through preliminary melt adhering;
- and
- are continuous or intermittently continuous strips located with intervals.
A method for manufacture of an underlay material for location under a parquet or other continuous surface material, in which method dampening projections formed of porous resilient material are arranged located in a distributed configuration on at least one surface of an substantially flexible sheet material, the total projection area of said dampening projections being less than the area of the sheet material, the method comprising the steps:
- providing a prefabricated polymer film, or a laminate furnished with at least one polymer film, or a paper or a cardboard as a first sheet material;
- said first sheet material is moved with its first surface exposed;
- a foamed or foaming polymer or polymer mixture in molten state is extruded onto said first surface at extrusion points having intervals therebetween, said intervals being perpendicular to a direction of said motion of the first sheet material;
- the foamed or foaming molten polymer or polymer mixture is allowed to bond fast to the first surface of said sheet material;
- the foamed polymer or polymer mixture is allowed to set to a solid state thereby forming said dampening projections.
Dependencies are inferred from the claim text.