Johnson Matthey Public Limited Company

Kumarasen Muruyandy

An apparatus and a method for coating substrates with washcoats in which a substrate () is engaged with a headset () of a substrate coating apparatus () below a washcoat showerhead () are disclosed. The washcoat is discharged from the washcoat showerhead () onto an upper surface () of the substrate under control of a valve assembly () before being drawn through the substrate by use of a vacuum generator (). The valve assembly () comprises an outlet valve movable between a closed state and an open state. The valve assembly () creates a pressure drop within an interior of the washcoat showerhead () when the outlet valve moves from its open state to its closed state.

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Negeri Sembilan, Malaysia

Kumarasen Muruyandy