German Pharma Plant Invests in Latest 750 L Tablet Coater to Perform Complex Task

Gebr. Lödige Maschinenbau has received the first order for large-scale implementation of the latest LC coater series; in the not too distant future, a major German pharmaceutical manufacturer will be using coating system model LC 150 with a useable volume of 750 l for the organic coating of tablets. Commissioning/start-up is scheduled for April 2015.

The LC coater series was specially developed for coating tablets. The top priority in its conception was optimum process management, in addition to ease of operation and ease of cleaning. All three sub-processes, which are relevant for film coating, were optimised: spraying the coating solution, mixing the tablets and drying them.

At the same time, this development distinguishes itself with a new design for spraying on the coating solution with a high number of jets, which enables a perfect fit with the tablet bed. The technology makes it possible to easily set and automatically control the correct spraying distance and angle at any time, in order to achieve a perfect result. At the same time, the optimum arrangement and number of jets accelerates the process in comparison with comparable coaters.

The recently commissioned coating system is extraordinarily complex; the task requires complex gas preparation technology, especially after a large amount of drying gas is used. In addition, the system is equipped with a specially designed and extensive high-pressure jet assembly. This ensures short processing times as well as superior coating homogeneity of the tablets.

To guard against explosions, the entire process takes place in a nitrogen circulation system. Nitrogen blocks atmospheric oxygen. The oxygen concentration in the unit is monitored continually. The solvent is condensed during the process.

Lödige was chosen after intensive experimentation with numerous other coating system providers. As well as production of the coater, the order also encompasses its complete installation and commissioning/start-up.

The LC coater series will be highlighted on Lödige’s interpack stand. In addition, emphasis will be on continuous production processes in the pharmaceutical industry. As a supplier of both batch and continuous systems, Lödige actively supports the trend towards exploiting the characteristic strengths of continuous processes for the manufacture of pharmaceutical products.

Hall 3/Stand F22, interpack 2014, 8–14 May, Messe Düsseldorf, Germany.

Gebr.Lödige Maschinenbau GmbH, +49 5251 309 208, spittka@loedige.de, www.loedige.de.