Patent ID: 8470219
Filing Date: 2013-06-25
Classification: A61L,D04H,Y10T

Abstract:
1. A method for producing a fibrous web suitable for the production of hygiene articles, in particular for incontinence articles, disposable diapers, panty liners or sanitary napkins, or absorbent liners, the fiber content of which consists essentially of cellulose fibers of natural origin, said method being an air-laid process comprising the following procedural steps: a) forming an essentially uniformly thick, dry fiber layer from loose fibers having a low moisture content that is in the range of residual moisture, said layer exhibiting a thickness; b) embossing the fiber layer to obtain a fibrous web and forming an embossed pattern with compressed fiber bond zones in which the fibers are essentially interconnected and self-bonding, while preserving said thickness; c) moistening the fibrous web with a water-latex mixture on at least one of the outer zones, the water-latex mixture containing 95 to 99% by weight water and 5 to 1% by weight latex thereby forming a hydrogen bond between fibers in said fibrous web; and d) after the step of embossing, precipitating the latex by drying while bonding the fibers inside and outside the fiber bond zones, whereby the resulting fibrous web exhibits dust due to fluff less than 0.1%, and whereby the mass of latex bound with the fibrous web is 1 to 5 g/m