Method of producing a multi-layer detergent tablet

US6809073B2 · kind B2 · utility

Assignee

• Reckitt Benckiser LLC · US

Inventors

• Wilfried Hoflinger · Schriesheim, DE
• Laurence Geret · Pulheim, DE
• Brigitte Sandmann · Heidelberg, DE
• Ralf Wiedemann · Mira, IT

Key dates

• Filing date: Nov 15, 2001
• Grant date: Oct 26, 2004
• Expiry date: Nov 15, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B30B15/065
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A method is provided for producing a tablet, especially a detergent tablet, which includes at least one first and one second layer. The method comprises the following steps: (a) introducing a first metered quantity of a first particulate composition into a molding cavity of a tablet press; (b) compacting the first metered quantity with a first mold pressure by means of a molding punch that has at least one convexity on its pressing surface, to produce a first compacted layer that has one or more respective indentations in its upper surface that corresponds to a convexity/convexities on the molding punch; (c) introducing a second metered quantity of a second particulate composition into the molding cavity of the tablet press on top of the first compacted layer; and (d) compacting the second metered quantity with a second mold pressure by means of a molding punch, to produce a second compacted layer with one or more respective indentations in its upper surface.