High velocity web floating air bar having air flow straightening

Details High velocity web floating air bar having air flow straightening High velocity web floating air bar having air flow straightening

1978-10-12

1980-04-15

Christian, Leonard D.

Advancing material of indeterminate length

By fluid current

And web storage

34 57A, B65H 1732

Patent

active

041979737

ABSTRACT:
An air bar for floating a running web and having air discharge slot means through which pressurized air is directed against the web to support the web. Pressurized air is introduced into the central portion of the air bar and a separate passageway is formed along the side wall of the air bar and which places the center of the air bar in air delivering communication with the discharge slot means. Air flow straightening means is located in the separate air delivering passage and directs or guides the air to flow outwardly through the slot means and in a normal direction to the slot means, that is at right angles to the web in a transverse direction of the web to thereby dissipate cross machine momentum components of air movement which results in more uniform drying of the web across its width.

REFERENCES:
patent: 3776440 (1973-12-01), Frost et al.
patent: 3873013 (1975-03-01), Stibbe

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