Floorboards with decorative grooves

A laminate floorboard which has a core and a laminate surface layer arranged on the upper side of the core and connecting means arranged at the opposite joint edges of the floorboard for joining the floorboard with an essentially identical floorboard in the vertical and/or horizontal direction, the parts of the laminate surface layer closest to said joint edges forming a horizontal plane, and the laminate surface layer comprising an upper layer and an underlying layer, wherein at least one of the joint edges of the floorboards has a surface which consists of the underlying layer and which is essentially parallel to the horizontal plane.

A system for making a decorative joint portion at two adjoining joint edges of laminate floorboards, which each have an MDF or HDF core and a laminate surface layer arranged on the upper side of the core and connecting means arranged at said adjoining joint edges for joining the floorboards with each other in the vertical and/or horizontal direction, the parts of the laminate surface layer closest to said adjoining joint edges forming a horizontal plane, wherein at least one of said adjoining joint edges has a surface which consists of an impregnated part of the core which is closest to the laminate surface layer and which is essentially parallel to the horizontal plane.

A laminate floorboard, which has an HDF or MDF core and a laminate surface layer arranged on the upper side of the core and connecting means arranged at the opposite joint edges of the floorboard for joining the floorboard with an essentially identical floorboard in the vertical and/or horizontal direction, the parts of the surface layer closest to said joint edges forming a horizontal plane, characterised in that wherein at least one of the joint edges of the floorboards has a surface which consists of an impregnated part of the core which is closest to the laminate surface layer and which is essentially parallel to the horizontal plane.

A system for making a decorative joint portion at two adjoining joint edges of laminate floorboards, which each have a core and a laminate surface layer arranged on the upper side of the core and connecting means arranged at said adjoining joint edges for joining the floorboards with each other in the vertical and/or horizontal direction, the parts of the floorboard closest to said adjoining joint edges forming a horizontal plane, wherein at least one of said adjoining joint edges has a groove with a bottom surface and at least one lateral surface, the lateral surface having a first angle to the horizontal plane, the bottom surface having a second angle to the horizontal plane, said first angle being greater than said second angle, and the bottom surface being formed in the laminate surface layer or in an impregnated part of the core which is closest to the surface layer.

A method for making a decorative joint portion on a laminate floorboard, said floorboard comprising an upper layer and an underlying layer, the method comprising at least partly removing, adjacent to an edge portion of the floorboard, the upper layer so that said underlying layer is uncovered and forms a surface which is essentially parallel to the upper side of the floorboard.

A method for making a decorative joint portion on a laminate floor panel intended for manufacturing a floorboard for laminate flooring, the floorboard comprising an upper layer, the method comprising forming an underlying layer adjacent to at least one edge portion of the floorboard, under said upper layer, and at least partly removing the upper layer so that said underlying layer is uncovered and forms a surface parallel to the upper side of the floorboard.