Method for making a fiber fleece

US11306422B2 · kind B2 · utility

Assignee

• REIFENHÄUSER GMBH & CO. KG MASCHINENFABRIK · DE

Inventors

• Jens Mager · Cologne, DE
• Andreas Roesner · Bonn, DE
• Christian Stelter · Ingelheim am Rhein, DE
• Asmir Vodencarevic · Erlangen, DE
• Thomas Fett · Troisdorf, DE
• Mark Hilgers · Troisdorf, DE
• Christoph Lettowsky · Aachen, DE

Key dates

• Filing date: Oct 16, 2017
• Grant date: Apr 19, 2022
• Expiry date: Oct 21, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29L2031/726
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A system for making a nonwoven nonwoven spun-bond or melt-blown fabric has a spinneret for spinning fibers or filaments, a cooler downstream of the spinneret for cooling the spun fibers or filaments, a stretcher downstream of the cooler for stretching the cooled fibers or filaments, and a conveyor downstream of the stretcher. The stretched and cooled fibers or filaments are deposited as a nonwoven web on the conveyor. Sensors measure input parameters at the spinneret, at the cooler, at the stretcher, and/or at at least one diffuser or at the conveyor. An evaluating unit for determining an output parameter from the measured input parameter with respect to a predetermined reference parameter.