Apparatus for the floatable guiding of webs of material by air b

Details Apparatus for the floatable guiding of webs of material by air b Apparatus for the floatable guiding of webs of material by air b

1990-01-31

1991-07-02

Peters, Jr., Joseph F.

Conveyors: fluid current

Having means for maintaining load in suspension along flow path

34156, 226 97, B65H 2014

Patent

active

050281739

ABSTRACT:
The invention relates to an apparatus for the floatable guiding of webs of material by air blown against the web. The apparatus comprises blowing boxes 2-6 disposed offset in relation to one another above and below the web 1 of material. Each blowing box 2-6 has two opposite rows of blowing apertures 21 whose blowing direction encloses an acute angle a2 with a deflecting surface 25, 26 which adjoins the edge of the blowing aperture 21 remote from the web 1 of material. The deflecting surface 25 also encloses an acute angle a3 with the web 1 of material. The two acute angles a2, a3 are so selected that the air blown out of the blowing apertures 21 is guided away the deflecting surfaces 25 and against the web 1 of material, where it spreads out in the form of a source flow 30. In this way both a strong air cushion supporting the web 1 of the material is obtained and also a high heat transfer at the web 1 of material and a clearly-defined flow of the blown air from the air cushion.

REFERENCES:
patent: 4197971 (1980-04-01), Stibbe
patent: 4290210 (1981-09-01), Johansson
patent: 4384666 (1983-05-01), Koponen et al.
patent: 4414757 (1983-11-01), Whipple
patent: 4836429 (1989-06-01), Nakashima
patent: 4837947 (1989-06-01), Kriegler
patent: 4854052 (1989-08-01), Korpela

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