Abstract: A material extraction nozzle for separating a mixture of materials having different densities, comprising: a nozzle body shell having an outer surface with a tangentially located material inlet at an upper portion thereof and an inner surface defining in part a frustrum of a cone; a substantially conical diffuser section having an outer surface terminating in an apex, the diffuser section axially aligned within the nozzle body shell in a spaced relation therewith so as to form an extraction chamber with the inner surface of the nozzle body shell and the outer surface of the substantially conical diffuser section; an extracted material outlet port positioned axially through the substantially conical diffuser section; and at least one rejected material capillary outlet located below the apex of the diffuser section.

Abstract: A novel method for producing an article such as a postcard, bookmark or label including a press-dried plant such as a flower is disclosed. The method comprises the steps of interposing a picked plant between two flexible sheets impregnated with a desiccating agent or between one of the flexible sheets and a cushioning sheet; drying the plant under a pressure in a drying atmosphere; hermetically storing the dried plant in a bag of a gas barrier material, the bag containing a desiccating agent and an oxygen absorbing agent; removing the plant from the bag shortly before producing the article carrying the press-dried plant; placing the plant on a surface of a substrate, and; forming a transparent or translucent overlayer over the plant so that air does not remain between the overlayer and the surface of the substrate.