Patent ID: 8293041

Claim:
A method of producing a fiber laminate for use as an absorbent cleaning cloth, the method comprising the steps of sequentially: preconsolidating by calendering a lower spun-bond web of continuous thermoplastic filaments; carding or air-layering at least one core layer of hydrophilic fibers on top of the preconsolidated lower spun-bond web; preconsolidating by calendering an upper spun-bond web of continuous thermoplastic filaments; applying the preconsolidated upper spun-bond web on top of the core layer; hydrodynamically consolidating the lower and upper preconsolidated spun-bond webs and core hydrophilic-fiber layer into a laminate, whereby the laminate is thoroughly wetted with water; heating the laminate and thereby partially drying the laminate of the water and softening the thermoplastic filaments; while the thermoplastic filaments are still hot and softened, plastically embossing troughs each having side flanks and a plateau into an upper surface of the partially dried laminate with the troughs extending through the upper spun-bond web into the layer of hydrophilic fibers; and thereafter fully drying the embossed laminate.