Patent ID: 7818850

Claim:
An article over which a moulding is to be made by pouring foam on it while it is placed on top of a cavity delimited by vertical walls having top surfaces, said article comprising a base ( 2 ) having a central strip region, and ledge regions extending laterally from said central strip region, and a top surface ( 6 ) and a bottom surface ( 4 ), hooks ( 3 ) extending from said central strip region of the bottom surface ( 4 ) of the base and metallic material fixed on the top surface characterized in that the base is flat in shape, the hook strip has a width less than 10 mm, and the flat base ( 2 ) is of a material such and of a thickness such that, when said article is placed on top of the cavity, with the hooks inside the walls and facing the cavity, said bottom surfaces of said ledge regions being in contact with said top surfaces of the vertical walls during the entire formation of the moulding to provide surface to surface contact between said ledge regions and said vertical walls, wherein said central strip region of said bottom surface, from which said hooks are extending, except said hooks, is the lowest part of the article; said central strip region is flat in a transversal direction of the article and has a width measured in said transversal direction; said right and left ledge regions have respective left and right portions extending parallel to said central flat strip region when said article is placed on top of a cavity and foam is being poured on it, said right and left portions having respective left and right widths in said transversal direction; and the sum of said left and right portion widths is larger than said width of said central strip region, wherein said left and right widths of said left and right portions solely prevent foam from entering the cavity during pouring of the foam.