Patent · US Active

Apparatus for making a spunbond web from filaments

US10988861B2 · kind B2 · utility

0Cited by

3References

7Claims

0Family size

Assignee

REFENHÄUSER GMBH & CO. KG MASCHINENFABRIK · DE

Inventors

Claudio Cinquemani · Cologne, DE
Detlef Frey · Niederkassel, DE
Hans-Georg Geus · Niederkassel, DE
Peter Schlag · Troisdorf, DE

Key dates

Filing date	Aug 16, 2019
Grant date	Apr 27, 2021
Priority date	—
Expiry date	Aug 16, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/731
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An apparatus for continuously making a spunbond web of filaments comprises a spinneret, a cooling chamber into which process air for can be introduced for the purpose of cooling the filaments, a monomer suction device between a spinneret and cooling chamber, a stretcher and a deposition device for depositing the filaments of the spunbond web. The cooling chamber is divided into two cooling compartments, and process air can be suctioned out from a first upper cooling compartment at a volumetric flow rate (VM) to a monomer suction device. Process air exits from the first upper cooling compartment at a volumetric flow rate (V1) into a second lower cooling compartment and from the first upper cooling compartment at a volumetric flow rate (V1) into a second lower cooling compartment. A ratio (VM/V1) is 0.1 to 0.35.

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