B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
B05D 1/26 (2006.01) B05C 5/02 (2006.01) D21H 23/34 (2006.01)
Patent
CA 2108841
[57] Abstract A jet coating apparatus and method for applying coating mix onto a moving web (14) in a noncontacting manner in ambient pressure. The apparatus comprises an upper lip (2) placed close to the web (14), a lower lip (3) situated in the vicinity of the upper lip (2) and arranged essentially on the trailing side relative to the moving direction of the web (14), whereby the slot orifice bounding surface (9) of the upper lip (2) and slot orifice bounding surface (11) of the lower lip (3) form a slot orifice (5) suited for feeding the coating mix onto the web (14). According to the invention, in the slot orifice (5) at least the directional vector (18) along the slot orifice surface (11) of the lower lip (3) has a vector component (20) opposite to the tangential velocity vector (19) of the web (14). (Fig. 2)
Gowling Lafleur Henderson Llp
Valmet Paper Machinery Inc.
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