Method and apparatus for making a nonwoven from crimped filaments

US11598036B2 · kind B2 · utility

Assignee

• REIFENHÄUSER GMBH & CO. KG MASCHINENFABRIK · DE

Inventors

• Tobias Wagner · Cologne, DE
• Sebastian Sommer · Troisdorf, DE
• Patrick Bohl · Petershohn, DE
• Andreas Roesner · Bonn, DE
• Hans-Georg Geus · Niederkassel, DE

Key dates

• Filing date: Jul 28, 2020
• Grant date: Mar 7, 2023
• Expiry date: Aug 6, 2041

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D04H3/147
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A nonwoven web is made by displacing an air-permeable mesh-belt conveyor in a horizontal travel direction and spinning and then depositing crimped continuous filaments as a web at a deposit region on the air-permeable mesh-belt conveyor. A first preconsolidation stage is provided downstream of the deposit region and a second preconsolidation separated by a suction gap from the first stage. Air is drawn air through the web and the conveyor at the deposit region at a first predetermined speed, the first and second consolidation stages at a second and third predetermined speeds, and at the suction gap either not at all or at a fourth predetermined equal to at most substantially less than the second predetermined speed.