Multiple layer fibrous web products of enhanced bulk and method of manufacturing same
US5102501A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1988 |
| Grant date | Apr 7, 1992 |
| Priority date | — |
| Expiry date | Jul 7, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H15/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Absorbent paper products, such as towels, absorbent wipes, toilet tissue, facial tissue and the like fibrous webs of relatively high bulk, are produced by a method comprising the steps of treating hydrophilic cellulosie fibers to impart kinks, curls, bends, twists, to the fibers; dispersing the treated fibers in an aqueous forming medium, and wet-forming a stratified single-ply web constituted of at least one stratum of the treated fibers and at least one stratum of conventional paper-making fibers. The treating step may consist of wet or dry mechanical working, chemical treatment or a combination of mechanical and chemical treatments. The web forming step comprises preparing a first aqueous furnish of the treated fibers, preparing a second aqueous furnish of the conventional fibers, and concurrently depositing the two furnishes in contiguous layers on a moving foraminous support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.