Patent ID: 8225469
Filing Date: 2012-07-24
Classification: D04H,D06N,Y10T

Abstract:
1. A method of forming a reconstituted leather sheet material for use in place of natural sheet leather, the method comprising: providing a body formed by a web or webs of predominantly waste leather fibres, the fibres comprising leather fibres produced by mechanical disintegration of waste leather using textile reclaiming methods; using hydroentangling jets to hydroentangle the leather fibres in the body while the body is supported on a porous conveyor so as to form the reconstituted leather sheet material wherein the hydroentanglement of the leather fibers is the primary mechanism for holding the leather fibres together through the entire thickness of the body, and wherein the hydroentangling includes an early pass at relatively high jet pressure to entangle interior leather fibres of the body with each other, followed by additional hydroentangling passes at relatively lower pressures to entangle the leather fibres in outer regions of the body with each other.