Patent ID: 6723208
Filing Date: 2004-04-20
Classification: D21F,Y10S,Y10T

Abstract:
A method for manufacturing a papermaker's fabric, said method comprising the steps of:providing a laminated structure, said laminated structure having a bottom layer and a top layer, said bottom layer and said top layer each being strips of equivalent width and being laminated together, said bottom layer being transversely offset with respect to said top layer so that an unlaminated portion of said bottom layer is along one lateral edge of said laminated structure and an unlaminated portion of said top layer is along the other lateral edge of said laminated structure; spirally winding said laminated structure in a plurality of turns wherein said unlaminated portion of said top layer in one turn of said laminated structure overlies said unlaminated portion of said bottom layer in an adjacent turn of said laminated structure; and joining said overlying unlaminated portion of said top layer to said unlaminated portion of said bottom layer to form said papermaker's fabrics said joining including one or more operations selected from the group consisting of sewing, stitching, welding, needling, fusing and gluing said overlying unlaminated portion with said top layer to said unlaminated portion of said bottom layer, and said papermaker's fabric being in the form of an endless loop having an inner surface and an outer surface; wherein the resulting papermaker's fabric has a sandwich structure, and wherein the surface of said top layer and the surface of said bottom layer that form the inner surfaces of said sandwich are substantially smooth.