Fiber draw unit nozzles for use in polymer fiber production

Details Fiber draw unit nozzles for use in polymer fiber production Fiber draw unit nozzles for use in polymer fiber production

2006-03-21

2006-03-21

Del Sole, Joseph S. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Continuous filament forming or film casting means with...

C425S072200

Reexamination Certificate

active

07014441

ABSTRACT:
A nozzle is described for downwardly directing air from an air intake of a fiber draw unit into a longitudinal channel of the fiber draw unit for forming spunbond polymeric fibers. The nozzle includes an upper eductor connected to the fiber draw unit and a lower eductor adjustably connected to the fiber draw unit and below the upper eductor. The nozzle includes a nozzle cavity that narrows from a nozzle inlet to a nozzle outlet and includes a downward turn of 90 degrees or less. Air directed through the nozzle outlet flows in a direction parallel to a wall of the longitudinal channel.

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