Cascade coater
AssigneeCiba-Geigy Corporation
InventorFrank Ade
Life of this patent
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Abstract
A cascade coater having a slideway and extending therein a slot which widens in the downstream direction as it meets the associated slideway. The slot is formed by upstream and downstream boundary walls, the downstream wall joining with a flat face angled with respect to that wall and the surface of the slideway or being curved to meet the slideway. The upstream and downstream surfaces of the slideway can lie in the same plane or different planes which are parallel and spaced apart by a distance of about 1 mm.
Claims4
A cascade coater having at least one slideway and, extending thereinto, an associated feed slot having an upstream and a downstream boundary wall, the upstream boundary wall terminating in an edge parallel to the associated slideway, whereas the downstream boundary wall of the slot has a face between said boundary wall and the associated slideway at an angle of from approximately 100.degree. to 170.degree., with the slideway and the face length as measured in a plane perpendicular to the slideway and to the downstream boundary wall being at least 0.5 mm and at most 5 mm.
Dependencies are inferred from the claim text.