Specifying a Bulk Bag Filler

Six important Parameters to consider when looking for a Bulk Bag Filler

Specifying a Bulk Bag Filler

As the number of options for bulk bag filling equipment options increases, so should the ability of the specifier to evaluate stand-alone equipment and integrated systems against current and anticipated needs.
(ed. wgeisler - 01/6/2017)
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If a forklift is unavailable to remove filled bags, as is required by the above-mentioned fillers, configurations are available with a three-sided base that provides access from the open side using a pallet jack (Fig. 4). This low-profile configuration can also be utilised to conserve height in low headroom applications.

Fig. 4: Where a forklift is unavailable, fillers with a three-sided base provide    
access from the open side using a pallet jack.                         

The time required to prepare empty bags for filling, and to remove filled bags from beneath the filler, can have as much or greater influence on maximum filling capacity than the rate at which material enters the bag. As such, adding a roller conveyor allows filled bags to be rolled out of the filling area for spout cinching and pallet/bag removal while another bag is being filled. Adding such a conveyor system, however, generally requires a filler with rear posts and a cantilevered fill head equipped with hooks that release bag loops automatically, so if higher capacity is in your future, a rear post configuration may be your best choice today.


To further reduce the time needed to attach the spout of an empty bag to the filler, this Swing-Down filler lowers the entire fill head to within an arm’s length of an operator standing on the plant floor. Further, it pivots the bag spout into a vertical position, enabling the operator to connect the spout of an empty bag to the inflatable bag spout collar in several seconds, after which the spout pivots back to horizontal, the entire fill head returns to fill height, the bag is inflated, and filling commences. Additionally, when the bag reaches its target weight, the bulk material delivery system deactivates automatically, the spout collar deflates, the fill head raises to decouple from the spout, and the powered roller conveyor sends the bag downstream of the filling area — automatically, rapidly and safely.

Safety vs manual Operations

With manual and semi-automated filling operations, the potential for worker fatigue and injury can increase according to required output per shift, relative to the type of bulk bag equipment specified.

Consider that the connection points of a conventional filler are often beyond the reach of most operators, even when short bags are being filled. But adding the height of a roller conveyor to the height of a bulk bag to the length of its bag loops puts the connection points for bulk bags of only 122 cm in height at approximately 213 cm above the floor!

This requires an operator to stand on a platform, a ladder or on the roller conveyor while straining to reach overhead spout connection points and inserting hands between temporarily disabled moving parts. Difficult-to-reach spout connection points can therefore compromise safety as well as capacity—two problems that can be solved with the addition of a fill head that lowers and pivots to the operator at floor level.

Repetitive manual tasks such as releasing bag hooks, placing pallets on a roller conveyor or actuating bulk material delivery, also increase the potential for error and injury, justifying semi- or fully automated equipment for all but the lowest volume applications.

Ensure Dust is contained

Even the most rudimentary filler is likely to be equipped with an inflatable spout seal to hold the bag spout firmly in place during filling. However, not every fill head is vented to a dust collector to filter displaced air and dust, and to vacuum ambient dust in the operator’s vicinity during disconnection and cinching. It is therefore important to confirm that the filler you are considering is so equipped, particularly when contamination of the product or plant environment cannot be tolerated.

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