The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 20, 2019
Filed:
Jan. 25, 2017
Reifenhaeuser Gmbh & Co. KG Maschinenfabrik, Troisdorf, DE;
Michael Nitschke, Koenigswinter, DE;
Martin Swiatek, Rheinbach, DE;
Martin Neuenhofer, Roesrath, DE;
Hans-Georg Geus, Niederkassel, DE;
Detlef Frey, Niederkassel, DE;
REIFENHAEUSER GMBH & CO. KG. MASCHINENFABRIK, Troisdorf, DE;
Abstract
An apparatus for making a spunbond nonwoven from monofilaments of thermoplastic synthetics has a spinneret for spinning and emitting the filaments in a travel direction, a cooler downstream of the spinneret for cooling the spun filaments, and a stretcher downstream of the cooler for stretching the filaments. An intermediate passage extending in the travel direction between the cooler and the stretcher has upstream and downstream converging passage sections. The upstream passage section in the travel direction of the filaments having a shorter length than the downstream passage section in the travel direction of the filaments. A ratio B/Bof an inlet width Bto an outlet width Bof the upstream passage section is 1.5 to 5.5. A ratio of an inlet width b, to an outlet width b, of the downstream passage section is 1 to 4.