초록 ▼

An air laid fibrous web product of enhanced absorbency and method of making same having a basis weight of between about 8 to about 50 pounds per ream, and a bulk of at least 0.40 mils per pound per ream, the web product comprising a multiplicity of papermaking fibers distributed randomly in the form

An air laid fibrous web product of enhanced absorbency and method of making same having a basis weight of between about 8 to about 50 pounds per ream, and a bulk of at least 0.40 mils per pound per ream, the web product comprising a multiplicity of papermaking fibers distributed randomly in the form of a web, an adhesive material, preferably a latex, essentially permeating said web of randomly distributed fibers and upon curing bonding adjacent fibers, the adhesive material representing between about 15 to about 30% of the basis weight of the web product and between about 0.1 to about 5.0 by weight of a hydrophile, said hydrophile substantially coating the bonded fibers. The hydrophile is applied to the web as an aqueous solution downstream of the bonding station, either in an immersion or spray treating step.

대표청구항 ▼

A process for making an air laid soft. high bulk, absorbent fibrous web having a basis weight in the range between about 8 to about 50 lbs./ream, consisting essentially of the steps of: (a) air laying a loose web; (b) bonding said web with a substantially hydrophobic adhesive material; (c) curing sa

A process for making an air laid soft. high bulk, absorbent fibrous web having a basis weight in the range between about 8 to about 50 lbs./ream, consisting essentially of the steps of: (a) air laying a loose web; (b) bonding said web with a substantially hydrophobic adhesive material; (c) curing said adhesive material; (d) incorporating into said web an aqueous solution of a water soluble hydrophile at any stage in said process contemporary with or subsequent to said step (b) to enhance the absorbency rate of the web by neutralizing the anti-wetting effects of the substantially hydrophobic adhesive material; and (e) drying said web while retaining between about 0.1 to about 5.0% by weight of said hydrophile, wherein said water soluble hydrophile is selected from the group consisting of polyethylene oxide, cellulose ethers, hydroxymethyl cellulose, polyvinyl alcohol, polyvinyl pyrrolidone, gelatin, graft copolymers of starch, crosslinked polyacrylates, acrylate polymers, crosslinked carboxymethyl cellulose alkali salts, starch or guar gum grafted with acrylamide acid salts in combination with divinyl compounds, glycerin, and compatible combinations thereof.