Device for turning a moving web

Details Device for turning a moving web Device for turning a moving web

1986-03-21

1988-08-02

Stodola, Daniel P.

Advancing material of indeterminate length

By fluid current

And web storage

226182, B65H 2000

Patent

active

047609460

ABSTRACT:
In a device for the guiding of a moving web (1) that has on its inner side a contact-sensitive surface (3), the web (1) separates two zones (13, 14) in the guide region from one another. The outer zone (14) is formed by a housing (7) connected with a reduced pressure source (P). The inner zone (13) is connected with the atmosphere. To seal the housing (7) against the atmosphere, sealing elements (16, 17) extending across the width of the web at the beginning and end zones of the guide region interact with the outer side of the web (1). As a result of the pressure difference, a gap is formed between the guide surfaces (8, 9) of a support (6) and the web, so that the contact-sensitive surface is not supported in the guide region.

REFERENCES:
patent: 3087664 (1963-04-01), Streeter
patent: 3587598 (1971-06-01), Miyamatsu
patent: 3638845 (1972-02-01), Herzhoff et al.
patent: 3767097 (1973-10-01), Watts et al.
patent: 3779481 (1973-12-01), Wilson
patent: 4059241 (1977-11-01), De Roeck et al.
patent: 4305536 (1981-12-01), Burdorf et al.

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