Apparatus for producing a nonwoven web

Details Apparatus for producing a nonwoven web Apparatus for producing a nonwoven web

2005-06-21

2005-06-21

Utech, Benjamin (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

Orifice for filaments or fibers

C425S143000, C425S169000, C425S170000, C425S377000, C425S140000

Reexamination Certificate

active

06908292

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.

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