Process for extracting water from desizing liquors

US4333190A · kind A · utility

Assignee

• BASF SE

Inventors

• Wilhelm Ruettiger · Ludwigshafen, DE
• Franz Suetsch · Bad Dürkheim, DE
• Albrecht Wuerz · Maikammer, DE

Key dates

• Filing date: Sep 11, 1980
• Grant date: Jun 8, 1982
• Expiry date: Sep 11, 2000

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06L1/14
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for desizing a fabric web comprising the steps of: first wetting the dry size-loaded fabric with the desizing liquor separated from a previous batch of fabric after desizing, so that the fabric, and the size adhering thereto, take up water from the desizing liquor by swelling and/or solvation, thereby increasing the concentration of the desizing liquor; separating the concentrated desizing liquor from the fabric; recycling the concentrated desizing liquor to a sizing operation; desizing the wetted fabric by a continuous fresh water wash; separating the desized fabric from the resulting desizing liquor; and recycling the desizing liquor to the first wetting step.