foerfarande och anordning foer at minska pao laeckageluftmaengderna och fladdrandet av banan i torkningslaodor och eller - kaopor.

摘要

Method and device for reducing the air leakage quantities in drying boxes 10 and/or covers and for reducing the flapping of the web W associated with the said inlet openings 14 and outlet openings 15 of the said boxes 10 or covers. The web W that is to be dried and possibly otherwise treated is fed through the inlet opening 14 inside the box 10 or cover, and removed therefrom via the outlet opening 15 in such a way that the mobile web W does not touch the fixed parts associated with the openings 14, 15. In the invention the running of the web W is stabilised both at the inlet opening 14 and at the outlet opening 15 by confining the layer of air entrained with the web W between a guide vane 20 situated at the bottom, which is arranged in connection with the said openings 14, 15 and the web W, thereby forming a relatively thin air cushion. IMAGE