Cuspated sheet forming
OwnerDonald George Keithinventor
Life of this patent
Estimating the term…
Abstract
A laminate comprising a core consisting of a cuspated sheet consisting of a series of hollow projections projecting upwardly and downwardly from the median plane of said sheet and wherein the outer tips of the projections on the ends furthest from the median plane are closed and the ends of the projections in the median plane are open and wherein the projections form a series of pointed cusps said core laminated to a porous sheet wherein the points of the cusps on at least one face have been melted and at least partially allowed to impregnate the porous sheet.
Claims13
A laminate comprising a porous sheet and a core which includes a single or double cuspated sheet of melt-spinnable thermoplastic material having a series of hollow projections projecting upwardly and downwardly from the median plane of said sheet and wherein the outer tips of the projections on the ends furthest from the median plane are closed and the ends of the projections in the median plane are open and wherein the projections form a series of pointed cusps, the points of the cusps on at least one face having been melted and at least partially allowed to impregnate into the pores in the porous sheet thereby laminating said sheet to said core, said porous sheet being selected from the group consisting of fabrics, either woven or melded and made from either natural or synthetic fibre, tissue;
- metal gauze and mesh;
- and finely perforated sheet material.
Dependencies are inferred from the claim text.