A recent enquiry was a request by an existing customer to use one of our bulk bag clamping fill heads in an application to fill 25kg bags.
Although a good idea, there were a few challenges in using the same fill head for 25kg bagging.
Their current process involved bagging off directly from a blender in an elevated position with control being through a continuously variable butterfly valve operated by foot control. The 25kg bag they were filling was simply wrapped around the discharge chute and held by the operator on a manual weigh platform. The operator watched the weigh display and at the right time closed the butterfly valve. Sounds familiar?
This was a cost effective, and quick process however dusty due to lack of control of dust laden displaced air, inaccurate and inconsistent due to the operator reacting to the weigh controller readout, and finally, not best practice from an OH&S perspective as the bag had to then be lifted onto the conveyor mounted under the sealing head which was a further separate disjointed process.
Capital was constrained so moving to an automated bagging system was prohibitive.
After a site visit to get good clarity on what the customer was really trying to achieve, and working with the customer, we were able to modify and tailor an inflatable Fresco fill head to fit up to an old unused semi automated weigh bag filling machine that the customer had unused. Factory acceptance test then proved the ability to control the inflatable fill head pressure just enough so the bag could hold the drop of 25kgs of product, but not too much so that it split the empty bag each time.
The result was a dust free bagging process that maintained the speed of the original manual process and delivered consistent accurate bag fill weights. A subtle drop by the full bag when released by the inflatable fill head put the full bag directly onto a slide plate from which the operator could slide the bag directly onto the conveyor under the seal head, thereby reducing the OH&S issues in the process.
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