Patent · US Active

Method and apparatus for making a nonwoven from crimped filaments

US11982032B2 · kind B2 · utility

0Cited by

1References

17Claims

0Family size

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	Mar 7, 2023
Grant date	May 14, 2024
Priority date	—
Expiry date	Mar 7, 2043

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD04H3/147
WIPO fieldTextile and paper machines
WIPO sectorMechanical 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.