Patent · US Active

Apparatus for making spunbonded nonwoven from continuous filaments

US11001942B2 · kind B2 · utility

0Cited by

4References

11Claims

0Family size

Assignee

REIFENHÄUSER GMBH & CO. KG MASCHINENFABRIK · DE

Inventors

Detlef Frey · Niederkassel, DE
Tristan Tiedt · Cologne, DE
Michael Nitschke · Rübhausen, DE
Martin Neuenhofer · Rösrath, DE
Hans-Georg Geus · Niederkassel, DE

Key dates

Filing date	May 27, 2019
Grant date	May 11, 2021
Priority date	—
Expiry date	May 27, 2039

Classification

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

Abstract

An apparatus for making spunbonded nonwoven has a spinneret for emitting the continuous filaments in a filament-travel direction, a cooling chamber downstream in the direction from the spinneret and receiving the filaments, and two air-supply manifolds flanking the chamber for feeding cooling air thereinto transverse to the direction. A flow straightener for equalizing flow of the cooling air on the filaments is provided in at least one of the air-supply manifolds and has passage walls forming a plurality of flow passages that extend transversely to a filament-travel direction. A flow cross section of the flow straightener is greater than 85% (preferably more than 90%) of a cross-sectional size of the straightener, a ratio of a length L of the flow passages to an inner diameter Di of the flow passages L/Di is 1 to 15.

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