Patent · US Active

Making a nonwoven from filaments

US11618983B2 · kind B2 · utility

0Cited by

9References

18Claims

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	Jul 28, 2020
Grant date	Apr 4, 2023
Priority date	—
Expiry date	Feb 23, 2041

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD10B2331/04
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An apparatus for making a nonwoven fabric from thermoplastic plastic filaments has an air permeable deposit conveyor having a horizontal face displaceable in a horizontal travel direction and a spinneret above the conveyor for spinning the filaments and depositing the spun filaments on the deposit conveyor in a deposit area of the conveyor as a nonwoven web for conveyance in the travel direction. An extractor beneath the conveyor draws air or process air through the deposit conveyor in the deposit area in a main extraction area below the deposit conveyor and is delimited by, relative to the travel direction, upstream and downstream suction partitions. One of the partitions has an upper edge set at a predetermined vertical spacing below the conveyor equal to between 10 mm and 250 mm.

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