Patent ID: 6407309
Filing Date: 2002-06-18
Classification: D04H,Y10T

Abstract:
A method of dry forming a sheet or web material of absorbent type comprising a dry formed product of short cellulose fibres and relatively long, thermoplastic binding fibres, typically for use as inserts in sanitary articles, the material having a surface layer with binding fibres, characterized in that the web material comprises a core or main layer of cellulose fibers in admixture with a small amount of binding fibres and, at one or both sides, a very thin surface layer solely consisting of binding fibres and with said fibres predominantly oriented in the surface plane itself,whereby in said method a mixture of short cellulose fibres and relatively long thermoplastic binding fibres is laid out on a forming wire from a forming head, whereafter the binding fibres are actuated by the web passing through a heat zone, characterized in that a very thin layer of binding fibres is laid out from a separate forming head before or after the laying out of the said fibre mixture so as to form a very thin surface layer on the top or bottom side of the web, wherein a corresponding thin binding fibre layer is laid out from an additional forming head, for coating an opposite side of the web.