Electrostatic deposition of swellable, modified cellulose ether on water wet hydrophilic substrate

US4096289A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Ehrenfried Nischwitz · Königstein, DE
• Klaus-Martin Uhl · Plochingen, DE
• Helmut Lask · Wiesbaden, DE

Key dates

• Filing date: Dec 14, 1976
• Grant date: Jun 20, 1978
• Expiry date: Dec 14, 1996

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S604/904
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Process for the transformation of comminuted and modified cellulose ether swellable with water, into a material that may easily be further processed and may thus be used without difficulty in particular in the production of hygienic pads, napkins, bandages, tampons, wrapping papers, insulating material, household papers and similar articles. In said process the modified cellulose ether is attached by electrostatic flocking to at least one surface of a web-shaped hydrophilic support that has been wetted with water and the support is dried.