초록 ▼

A low density compression resistant cellulosic-based nonwoven fabric having good absorbency and et tensile strength is formed from cellulosic-based fibers which are treated for use in an air laid process, with an aqueous dispersion of a self-crosslinkable polymeric binder and a chemical stiffening a

A low density compression resistant cellulosic-based nonwoven fabric having good absorbency and et tensile strength is formed from cellulosic-based fibers which are treated for use in an air laid process, with an aqueous dispersion of a self-crosslinkable polymeric binder and a chemical stiffening agent for the cellulose fibers and then dried at temperatures that result in intrafiber crosslinking and interfiber binding. The cellulosic-based nonwoven fabrics, thus formed, are useful in personal care products such as diapers and feminine care products.

대표청구항 ▼

[ What is claimed is:] [1.] In a process for producing an air-laid nonwoven web designed for use in personal care absorbent products which comprises randomly distributing a layer of cellulosic fibers onto a moving perforated belt thereby forming a web of cellulosic fibers, applying an aqueous emulsi

[ What is claimed is:] [1.] In a process for producing an air-laid nonwoven web designed for use in personal care absorbent products which comprises randomly distributing a layer of cellulosic fibers onto a moving perforated belt thereby forming a web of cellulosic fibers, applying an aqueous emulsion containing a polymeric binder to the web of cellulosic fibers and subsequently drying the web of cellulosic fibers to form said air-laid web, the improvement in the process for forming a high tensile, compression resistant air-laid web which comprises:stiffening the fibers by applying an aqueous medium containing a chemical stiffening agent to the fibers, said chemical stiffening agent being capable of effecting cross-linking of the cellulosic fibers and subsequently,heating the web of cellulosic fibers under conditions sufficient for removing water from the air-laid web and effecting reaction between the chemical stiffening agent and cellulosic fibers for imparting stiffening thereto, said aqueous medium containing the chemical stiffening agent being applied either:(a) simultaneously with the aqueous emulsion containing the polymeric binder; or,(b) prior to applying the aqueous emulsion containing the polymeric binder and prior to effecting reaction between the chemical stiffening agent and cellulosic fibers for imparting stiffening thereto.