Co-foamable pvc plastisol composition and co-foamed pvc layer for floor covering
AssigneeBeaulieu International Group NV
InventorDAAN DE KEYZER
Life of this patent
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Abstract
A co-foamable vinyl plastisol composition, a gelled or fused co-foamed vinyl layer, a co-foamed vinyl layer, methods of manufacture of the layer and use of the layer in floor coverings such as sheet vinyl, cushioned vinyl flooring, floor tiles, and laminated planks are described. The co-foaming is preferably a sequential foaming of a single layer such as a single coated layer, such as sequentially applied mechanical foaming or frothing followed by chemical foaming. A co-foamable vinyl plastisol composition is mechanically foamed/frothed before it is applied to a substrate. Once on the substrate, the co-foamable layer can be processed further and is chemically foamed in a later process step.
Claims21
-34. (canceled)
A multi-layered sheet suitable as a floor or wall covering, comprising:
- i. a support layer having an upper surface and a lower surface;
- ii. a co-foamed vinyl layer having an upper surface and a lower surface, the lower surface of the co-foamed vinyl layer being provided adjacent to the support layer.
A floor covering comprising a plurality of layers, wherein one layer is a vinyl co-foamed gelled and fused plastisol layer, wherein the vinyl co-foamed gelled plastisol layer is a combination of co-foamed mechanical and chemical foams in one layer.
A process for preparing a multilayer sheet, comprising the steps of:
- providing a support layer having an upper surface and a lower surface;
- and forming a vinyl co-foamable layer on the upper surface of the support layer, a lower surface of the vinyl co-foamed layer being provided adjacent to the support layer.
Dependencies are inferred from the claim text.