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US 12,594,748 B2Granted
Floor element
AssigneeUnlin Gv
InventorsQuinten Christiaens, Jochen Bossuyt, Kristof Van Vlassenrode
Life of this patent
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Abstract
A floor element includes a substrate made of polymer, a top layer on one of the two sides of the substrate and a polymeric foamed layer on the other of the two sides of the substrate. The density of the polymeric foamed layer is less than 120 kg/m3.
Claims10
A floor element comprising:
- a substrate,
- a top layer on a first of two sides of the substrate, and
- a polymeric foamed layer of polyethylene on a second of the two sides of the substrate,
- wherein the substrate consists essentially of a layer of foamed rigid polyvinyl chloride (PVC) comprising:
- 10 phr or less of one or more plasticizers selected from the group consisting of esters of phthalic acid, esters of iso- or terephthalic acid, esters of trimellitic acid, esters of adipic acid, and esters of phosphoric acid, and
- at least 100 phr of fillers,
- wherein said layer is provided with the top layer at a contact surface, wherein the top layer including said contact surface is free from fiber reinforcing layers;
- wherein the substrate has a density between 800 and 1800 kg/m3 in foamed form;
- wherein a density of the polymeric foamed layer is less than 120 kg/m3;
- wherein the top layer comprises a decorative layer and a wear layer, said wear layer is a transparent and filler-free layer of PVC comprising 10 to 40 phr of plasticizer selected from the group consisting of esters of phthalic acid, esters of iso- or terephthalic acid, esters of trimellitic acid, esters of adipic acid, esters of phosphoric acid, and combinations thereof, wherein a thickness of said wear layer is between 0.2 and 0.8 mm;
- wherein the top layer further comprises at least one flexible or semi-rigid polymer layer under the decorative layer such that the at least one flexible or semi-rigid polymer layer includes more than 10 phr plasticizer;
- wherein the decorative layer is a decorative film;
- wherein the floor element is provided on one or more sides with a coupling means for coupling two of such floor elements to each other;
- wherein the layer of foamed rigid PVC is directly bonded to the polymeric foamed layer.
11 more elements
A floor element comprising:
- a substrate,
- a top layer on one side of the two sides of the substrate, wherein the top layer, including a contact surface between said substrate and said top layer, is free from fiber reinforcing layers, and
- a polymeric foamed layer of polyethylene on another side of the two sides of the substrate;
- wherein the substrate consists essentially of a layer of foamed rigid polyvinyl chloride (PVC) provided in the contact surface with the top layer, the layer comprising:
- 10 phr or less of plasticizer selected from the group consisting of esters of phthalic acid, esters of iso- or terephthalic acid, esters of trimellitic acid, esters of adipic acid, esters of phosphoric acid, and combinations thereof, and
- at least 100 phr of fillers,
- wherein the top layer is layered and consists essentially of N polymer layers, N>2, one layer being a wear layer and one layer being a decorative layer,
- wherein a coating is optionally provided on the top layer,
- wherein the substrate has a density between 800 and 1800 kg/m3 in foamed form;
- wherein a density of the polymeric foamed layer is less than 120 kg/m3;
- wherein the layer of foamed rigid PVC is directly bonded to the polymeric foamed layer;
- and wherein
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- wherein d is a total thickness of the substrate and the top layer, di is a thickness of the i-th of the N polymer layers and expressed in s millimeters, wherein Pi is how much plasticizer there is in the polymer of an i-th of the N polymer layers, expressed as parts per hundred by weight of said polymer in said i-th of the N polymer layers;
- wherein the wear layer is a transparent and filler-free layer of PVC comprising 10 to 40 phr of plasticizer selected from the group consisting of esters of phthalic acid, esters of iso- or terephthalic acid, esters of trimellitic acid, esters of adipic acid, esters of phosphoric acid, and combinations thereof, wherein a thickness of said wear layer is between 0.2 and 0.8 mm;
- wherein the top layer further comprises at least one flexible or semi-rigid polymer layer under the decorative layer such that the at least one flexible or semi-rigid polymer layer includes more than 10 phr plasticizer;
- and
- wherein the decorative layer is a decorative film.
45 more elements
Dependencies are inferred from the claim text.