Spray spinning nozzle using parallel jet flow

Plastic article or earthenware shaping or treating: apparatus – Continuous filament forming or film casting means with...

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Details

425 821, 425 831, 425 72S, 57310, B29D 3100

Patent

active

041681380

ABSTRACT:
A spray spinning nozzle for producing a substantially continuous filament from a molten synthetic resinous material includes a nozzle with a removable orifice from which a filament of molten material is emitted and a gas attenuation assembly which is laterally removable from the nozzle. The attenuation assembly includes at least three gas jets spaced about and radially close to the nozzle axis for emitting parallel high velocity jets. Drag forces produced by the gas jets attenuate the filament to a thin diameter.
The resulting filament has a comparatively narrow range of diameter variation.

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