Manufacture of spunbond from continuous filaments

US11066766B2 · kind B2 · utility

Assignee

• REIFENHÄUSER GMBH & CO. KG MASCHINENFABRIK · DE

Inventors

• Michael Nitschke · Rübhausen, DE
• Martin Neuenhofer · Rösrath, DE
• Detlef Frey · Niederkassel, DE
• Christine Noack · Cologne, DE

Key dates

• Filing date: May 23, 2019
• Grant date: Jul 20, 2021
• Expiry date: Oct 8, 2039

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01D5/0985
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

An apparatus for making spunbonded nonwoven from continuous thermoplastic filaments has a spinneret for downwardly emitting the continuous filaments in a filament direction, a cooling chamber directly beneath the spinneret for receiving the filaments from the spinneret and cooling the spun filaments with cooling air and having relative to a longitudinally extending machine direction a pair of longitudinal sides extending parallel to the machine direction and a pair of transverse sides extending substantially perpendicular to the machine direction between the longitudinal sides. Respective air-supply manifolds on the transverse sides feed cooling air therefrom into the cooling chamber. The cooling air is extracted from the cooling chamber at the longitudinal sides. A stretcher directly beneath the cooling chamber receives and elongates the cooled filaments, and a device deposits the stretched filaments as a band and conveys the band off in the machine direction.