Device for producing spunbonded nonwovens

US6164950A · kind A · utility

Assignee

• Firma Carl Freudenberg · DE

Inventors

• Detlef Barbier · Waldfischbach-Burgalben, DE
• Engelbert Locher · Kaiserslautern, DE
• Norbert Goffing · Neunkirchen, DE
• Jean Baravian · Parempuyre, FR
• Peter Pförtner · Raleigh, US
• Georges Riboulet · Colmar, FR
• Milton A. Williams, Jr. · Durham, US

Key dates

• Filing date: Jan 8, 1999
• Grant date: Dec 26, 2000
• Expiry date: Jan 8, 2019

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D04H3/16
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Rectangular or round spinning nozzle packs for extruding thermoplastic filaments each have both melt channels and orifices for the higher melting polymer compound and also melt channels with orifices through which is passed a polymer compound that melts at a temperature 5 to 50.degree. C. lower. Variously designed insulation channels thermally separate these melt channels, which are operated at different temperatures.