Method of making soft paper

US5061344A · kind A · utility

Assignee

• Sunds Defibrator Aktiebolag · SE

Inventors

• Irene Wedin · Sundsvall, SE
• Bo Ek · Uppsala, SE

Key dates

• Filing date: Mar 14, 1989
• Grant date: Oct 29, 1991
• Expiry date: Mar 14, 2009

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H27/38
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Soft paper from cellulose fibres is manufactured by wet-forming a first fibre layer. Thereafter air-borne dry fibres are deposited directly on one or both sides of the wet-formed layer while this is still wet, so that a second and possibly a third fibre layer are formed on the first one. Fibre bindings thereby arise between the layers. The wet-formed fibre layer gives the soft paper its strength, while the dry-formed fibers give a soft surface.