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Waste & Trim Extraction – Rigid Containers

Rigid Containers based in Desborough awarded Impact a substantial contract to bring their current waste system into the 21st century, ensuring it conforms to relevant legislation and considers environmental aspects. Their existing system has no dust filtration which means dust particles and warm conveying air are discharged into the atmosphere, as it is mainly made up of cyclones and a small separator.


Project Manager for Rigid Containers, Michael O’Dell said “We all recognised our current system was well past its sell by date and this new system will have a pay back from our heating costs.  We wanted an effective, state-of- the-art system and knew that Impact’s vast market experience and technical expertise would provide us with the best solution”.

The waste trimmings and conveying air is guided into two 4 metre wide advanced screen separators working in conjunction with two x 800 diameter rotary airlock valves.  The waste is then be delivered via an automatic diverter drop chute into the existing baler.  The drop chute allows the facility for a second baler to be added should it be required in the future.

The drop chute design was a key feature for Rigid Containers, as it had to be designed and manufactured so that very little structural modifications were required.  This gauntlet was thrown to Impact’s drawing office and after several site visits, a design was approved where it meant only a single roof purlin had to be moved.  This was a massive financial saving for Rigid’s construction budget.

Another key feature for Rigid Containers was the fact that the conveying air is cleaned and recycled back into the factory during the winter months.  The dust and air is separated within an automatic reverse jet filter.  The dust falls from the filter into a dust system and is finally converted into a briquette. During the winter months, clean air is routed through ducting back into the factory, thus ensuring reduced heating bills, an essential measure with the ever increasing energy prices.