Vacuum assisted beltless holddown for double backer

Details Vacuum assisted beltless holddown for double backer Vacuum assisted beltless holddown for double backer

D - Textiles, Paper

21

F

D21F 5/14 (2006.01) B31F 1/28 (2006.01) D21F 7/00 (2006.01) D21F 11/12 (2006.01)

Patent

CA 2262164

An essentially non-contact holddown system for a corrugator double backer utilizes vacuum pressure through the lower heating section which supports the double face corrugated web. Continuous edge sealing membranes overlie the edges of the web and form, with the web edge and the surface of the heating section, vacuum chambers into which air is drawn from the flute spaces in the double face web.

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