Continuous filament cellulose nonwoven made with multiple bonding techniques

US11613097B2 · kind B2 · utility

Assignee

• LENZING AKTIENGESELLSCHAFT · AT

Inventors

• Tom Carlyle · Spanish Fort, US
• Mirko Einzmann · Wels, AT
• Gisela Goldhalm · Neufurth, AT
• Malcolm Hayhurst · Bedworth, GB
• Katharina Mayer · Neukirchen bei Altmünster, AT
• Ibrahim Sagerer-Foric · Vöcklabruck, AT

Key dates

• Filing date: Apr 3, 2017
• Grant date: Mar 28, 2023
• Expiry date: May 20, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B32B2555/02
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

This invention relates to a nonwoven material consisting of one or more layers of nonwoven webs of essentially continuous cellulosic filaments, characterized in that within each layer each of the three bonding mechanisms: a) hydrogen bonding, b) filament intermingling and c) merged filament bonding occur for bonding the essentially continuous cellulosic filaments. Further it relates to a process for the manufacture and to various uses of this material.