Method and apparatus for quality surveillance during the manufacture of tablets

US7981352B2 · kind B2 · utility

Assignee

• FETTE GMBH · DE

Inventors

• Jurgen Hinzpeter · Schwarzenbek, DE
• Ingo Schmidt · Schwarzenbek, DE
• Ulrich Gathmann · Hamburg, DE
• Jörg Gaedecke · Geesthacht, DE
• Werner Seifert · Bargteheide, DE

Key dates

• Filing date: Jan 21, 2005
• Grant date: Jul 19, 2011
• Expiry date: Aug 26, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N21/9508
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for quality surveillance in manufacturing tablets in a rotary tablet press which, in a compression chamber, has a rotor with upper and lower rams, a die-plate, a cam system for the rams, at least one compressing station, and a charging system for the powdered material requiring compression wherein the tablets are checked for chemical and/or mechanical properties, wherein at least some chemical and/or mechanical data of the tablets is obtained by means of a NIR or LIF sensor in the compression chamber after the upper rams have left the dies, after a measuring procedure has been initiated by a machine computer in response to the die positions determined by a position generator relative to the NIR or LIF sensor.