Patent ID: 6027768
Filing Date: 2000-02-22
Classification: B05C,D21H

Abstract:
A jet nozzle apparatus for applying a coating mix to a paper or board web comprising:an application chamber for containing the coating mix which is in fluid communication with a slot orifice which is spaced from the web, the slot orifice for jet-application of the coating mix onto a paper or board web, the application chamber being connected to the slot orifice by a meandering coating mix infeed channel, the application chamber having an inlet port for feeding coating mix into the application chamber from a supply of coating mix; anda strainer element mounted within the application chamber in a flow path of the coating mix from the inlet port to the slot orifice such that the coating mix fed through the inlet port flows first into a lower portion of the application chamber then through the strainer element and into an upper portion of the application chamber, the strainer element being positioned across a cross-section of the application chamber at an angle relative to the flow path of the coating mix through the strainer element, the strainer element being one of a slotted-orifice, a perforated-hole strainer, and a mesh strainer.