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US 2003/0113394 A1Published application
Apparatus for producing a nonwoven web
AssigneeReifenhauser GmbH & Co. Maschinenfabrik
InventorsHans Georg Geus, Hans Jurgen Hofemeister, Falk Rosner, Detlef Frey, Karsten Sievers, Udo Schomer
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Abstract
In the production of a spunbond web by aerodynamically stretching thermoplastic filaments from a spinneret, the stretching nozzle is formed by two nozzle-forming units each of which has a temperature control device, especially a heater, to minimize deformation at the stretching nozzle defining wall. The result is a reduction in the tolerance of the basis weight of the spunbond web.
Claims15
An apparatus for producing a spunbond web from aerodynamically stretched thermoplastic synthetic resin filaments, comprising:
- A spinning head for producing a curtain of thermoplastic synthetic resin filaments;
- a stretching nozzle defined between a pair of nozzle-forming units receiving said curtain of filaments and aerodynamically stretching said filaments;
- a foraminous belt collecting aerodynamically stretched filaments in the form of a spunbond web;
- and
- at least one temperature control device for controlling the temperature of at least one of said units to reduce basis weight tolerances in said web.
2 more elements
Dependencies are inferred from the claim text.