Earlier this year Concetti Group, Bastia Umbra, Italy, completed installation of a fourth CONTINUA tubular form-fill-seal (FFS) bagging system at the Bradford plant of Kemira Chemicals (UK). Here dry polyacrylamide, mainly used for water treatment and paper making, is packed into 25kg bags. Following product trials conducted at the Concetti test facility and laboratory in 2007, the Italian bagging specialist was awarded a contract to supply four CONTINUA lines. These have replaced previous packaging lines which had become outdated, unreliable and were of insufficient capacity with little or no technical support available.

CONTINUA bag filling machines are capable of handling a wide range of demanding products and are available with many features that can be applied to specific applications such as product de-aeration probes, special coatings for product contact surfaces, bag compacting, residual air evacuation, upper edge seal area cleaning, seal cooling and inert gas purging. Dust problems have been eliminated thanks to the new generation of bag holders designed to guarantee dust- and spillage-free operation. To optimise bag stability and shape, the machine also features the K-Sealing option, creating a block style bag ideal for palletising highly presentable, safe and compact loads. At the Bradford installation these are presented to an existing palletiser system, another example of the CONTINUA’s versatility.

Product handling starts with the Concetti electronic net gravity fed weigher designed for use with free flowing powders. The precision performance of this unit was demonstrated with the final test results showing an accuracy of less than 8g sigma 1 (68% of weighments within +/-7.5g of the 25kg target weight). www.concetti.com 

Concetti CONTINUA tubular FFS bag filling machine and (right) the company’s
electronic precision net weigher

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