Method and apparatus for banding tows of filamentary material

Details Method and apparatus for banding tows of filamentary material Method and apparatus for banding tows of filamentary material

1979-03-29

1981-04-07

Mackey, Robert

Textiles: manufacturing

Thread finishing

Surface modification of running length

28248, D02J 118

Patent

active

042597692

ABSTRACT:
A running tow of filamentary filter material is banded by a plurality of streams of compressed air which issue from the orifices of plenum chambers forming a row which extends transversely of the direction of transport of the tow. The streams which issue from the plenum chambers band discrete strip-shaped portions of the tow. The density of such strip-shaped portions is monitored at or downstream of the banding station, and the pressure of air in one or more chambers is increased or reduced when the monitored density of the respective strip-shaped portion or portions deviates from a desired density. The monitoring devices can utilize optoelectronic or electropneumatic transducers.

REFERENCES:
patent: 3345697 (1967-10-01), Aspy, Jr.
patent: 3412856 (1968-11-01), Esenwein
patent: 3971695 (1976-07-01), Block
Stern, H. Fluidics in Synthetic Fiber Quality Control, Modern Textiles, 53(11): pp. 10-14, Nov., 1972.

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