SOFT ABSORBENT SANDWICH WEB COMPRISING HIGH CONCENTRATIONS OF SUPERABSORBENT MATERIAL, CELLULOSIC FIBERS AND SURFACE APPLIED BINDER

摘要

The present invention is a liquid absorbent sandwich web as can be used in absorbent products such as in disposable absorbent articles such as diapers, feminine hygiene articles or incontinence devices, and to the manufacturing of such webs. The liquid absorbent sandwich web provides high absorbent capacity without compromising softness.

主权项

1. Liquid absorbent sandwich web
said web exhibiting in Cartesian coordinates an essentially endless (x-directional) length along the machine direction of the manufacturing process, further a thickness or z-direction and a width (y-) direction, and comprising as sandwich forming materials
a first and a second outer layer, in the form of an in-situ formed or pre- formed web, preferably comprising cellulosic fibers;superabsorbent material (SAM), sandwiched between said outer layers, preferably particulate SAM;individualized fibers adapted to be interspersed between said SAM, preferably comprising cellulosic fibers;a self-crosslinking latex binder; characterized in that the sandwich forming materials are present in the following composition:
SAM from about 70% to about 90%;fibers interspersed between the SAM from about 5% to 25%;first outer layer from about 2% to about 15%;second outer layer from about 2% to about 15%;self-crosslinking latex binder from about 1% to about 5%;all as weight-% based on the sum of the weights of the sandwich forming materials, and in that said composition is essentially uniform across the x- and y-direction of said web.