Device for coating particles, particularly drugs in the form of particles, such as tablets

US4543906A · kind A · utility

Assignee

• Glatt Maschinen—und Apparatebau AG · CH

Inventors

• Werner Glatt · Achim (Weser), DE
• Erwin Grab · Lörrach, DE

Key dates

• Filing date: Jan 21, 1983
• Grant date: Oct 1, 1985
• Expiry date: Jan 21, 2003

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A particle coating apparatus is provided with a housing containing a drum open at both its ends and comprising a perforated cylindrical mantel. The drum is allowed to rotate and pivots at one of its ends with a bearing. An air transmission shoe having an opening arranged at one of the lower quadrants of the drum. The opening is adjustable and extends along the contour of the drum. The opening directs the gas through the tablets. The drum has a taking opening extending along the entire width of the mantel. The opening may be closed by a hinged pneumatic shutter. The bottom of the housing located under the drum has an opening which may be closed. When the tablets contained in the drum are coated, they may come out under the effect of gravity after the release of the taking opening and of the bottom opening of the housing.