Batch Loss Reconciliation And Recovery Of Powder From Tablet Presses And Capsule Filling Machines

Hanningfield Process Systems Ltd

By Colin Ellis, Managing Director, Hanningfield Process Systems Ltd

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Hanningfield Process Systems has been designing and manufacturing stainless steel process equipment for the pharmaceutical industry since 1987.

Using the experience gained working with many major pharmaceutical internationals for nearly twenty years, Hanningfield has produced an innovative method of powder recovery from tabletting and capsule filling machines.

Hanningfield has produced many designs aimed at solving unique pharmaceutical production problems. A recent new product development originally designed for one of Hanningfield’s many prestigious clients, is the PRC, a powder recovery cyclone for use primarily in tablet and capsule production facilities. The system is very adaptable however and can be used on a variety of dust extraction applications.

In the manufacture of tablets and capsules, powder losses are inevitable. Generally the excess powders are drawn away by vacuum to a central dust collector usually sited in an uncontrolled area such as a void or plant room. The result is a ‘cocktail’ of pharmaceutical powders which may result in exposure to the atmosphere and personnel when disposal is required.

The Hanningfield system was originally designed purely as a method of collecting powders within the controlled conditions of the process room. Since the successful installation of several systems, other benefits have proven the value of collection of the product in the process room such as batch loss reconciliation and the ability to re-introduce product back into the process.

Due to the hygienic design of the cyclone, if protocols allow, powder can be recycled by a variety of methods back to the tablet press or capsule filling machine. A fully enclosed vacuum transfer system can be used, further improving the integrity of the recycling process.

With the potential to recycle product that would normally be lost during manufacture, installation of the PRC system is easily justified on cost savings alone, although occupational hygiene remains of primary concern.

The highly efficient powder separation ensures that virtually all powder collected is separated from the air flow. An internal police-filter located in a separate chamber acts as a back-up to maintain the integrity of the system.

The PRC is manufactured in Hanningfield’s own UK production facility allowing each system to be built to suit the application. Cyclones can be wall mounted or free standing and powder catch-pots can be sized according to the requirement. Each cyclone is designed to comply with GMP and are supplied with a comprehensive documentation package including certificates of materials.

For more information on the Hanningfield PRC system please call Colin Ellis on + 44 ( 0 ) 1268 549 777. Visit www.hanningfield.com for additional details on Hanningfield and the unique PRC system

Author Information - Colin Ellis

Managing Director

Colin Ellis has been the Managing Director of Hanningfield since the formation of the company in 1987. Colin started his pharmaceutical career in 1980 and has worked on a wide variety of prestigious pharma installations as a project engineer.

The formation of Hanningfield led to the creation of a range of well established process products and in recent years links made by Colin with new partner-suppliers have been established allowing the product range to be expanded further. Colin holds patent rights and has been involved with a number of successfully patented process devices.

Drawing on 25 years experience of working in and with the pharma industry, Colin is pleased to discuss process applications with existing or indeed, new customers thus making the first essential step towards establishing a trustworthy customer-supplier relationship.

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