Bulk bag unloaders (also called super sack unloaders or bulk bag dispensers) are used for material transfer from large bulk bags to industrial processing equipment or downstream bagging machines. These bulk bag unloaders are capable of supporting many different bag weights, usually in the range of 2,000 to 4,000 pounds, using heavy duty unloading frames with bag hoists. Some types of unloaders also include bulk bag conditioners (or bulk bag massagers) that promote material flow from the bulk bag.
Once the bulk bag has been lifted into place, an operator opens the access door to untie the spout and feed it into a bulk bag dispenser valve for dust-free unloading. Then the operator can unload, dispense, and discharge material to valve bag fillers, open mouth bag fillers, mixers, blenders, feeders, and more. The entire process can range from manual to fully automatic systems with multiple dump stations or portable bulk bag unloaders.
View ( 23 ) Case Studies about Bulk Bag Unloaders Below
All bulk bag unloaders and frames can be custom built to your requirements and budget. Some features include a bag transport frame, a self-contained hoist for lifting, bag untie hopper, dust-tight bag seals, bag spout spikes, bag agitation paddles, bulk bag dispenser valves, and more. Save time, money, and space with dust-free unloaders and dispensers available in unlimited configurations.
Packaging system fills open mouth paper bags at a rate of 4-6 bags per minute with granular and powder products, such as zeolite and guar gum.
The system repackages products from big bags, also called bulk bags or Super Sacks®. It includes a forklift loaded bulk bag unloader with an extended frame to accommodate an open mouth bagging machine underneath.
Stainless steel IBC container loaded onto discharge station above bag packaging equipment
Trying to decide between bulk bags vs. IBC containers for your food grade packaging plant? Stainless steel IBC containers, or intermediate bulk containers, are easier-to-use, clean, and add into existing operations at food and beverage processing plants.
The simplest version of a stainless steel IBC system would include a set of IBCs and a discharge station. These would replace traditional bulk bag unloaders and bulk bags, or FIBCs.
This portable bulk bag unloader has an overhead rail, powered trolley and hoist, and a bag lifting frame. It has been designed for a typical 4,000 pound bulk bag with bottom discharge. The unloader can be moved in the process area to allow for unloading of bulk bags at mixing or batching stations. Locking casters prevent the unit from moving while dispensing.
This material transfer system conveys the contents of a bulk bag into 10 to 100 pound valve bags. It can be used to transfer materials such as powders or small granules including finish cement, bentonite, barite, fertilizers, frac sand, powdered limestone, gypsum, powdered iron ore, oil drilling chemical powders, titanium dioxide, and more.
This big bag unloader discharges material from a bulk bag into an industrial mixer. An operator lifts a bulk bag using a fork truck and hangs it on the frame. Material is drawn out of the bag using an enclosed vibrating feeder and transfers it into a paddle mixer for blending with other dry ingredients. The feeder is controlled by a loss-in-weight system comprised of load cells and a controller to dispense a specific weight of material per batch.
This machine was designed to unload and dispense carbon black powder from big bags into buckets. After filling a bucket, a vibrating table was used to settle or densify the powder. The buckets were stacked onto pallets for transport to an industrial mixer for blending.
This customer specialized in the production of lead powder, tin powder, and tin / lead alloy powders. Their products were used for many types of industries including oil and gas, radiological protective clothing, industrial x-ray shielding, anti-friction products, and batteries. All metal powders are manufactured, blended, and packaged per customer specifications.
This chemical blending and batching system was used for the toll blending of powder chemicals, including calcium carbonate. The final blended product was to be automatically packaged into bulk bags using a bulk bag filling machine. It could also be packaged into smaller bags using a valve bagging machine.
This bulk bag unloader dispenses poorly flowing, granular material directly from bulk bags into a valve bag filler. Then, the valve bag filler fills 40-50 pound bags. A vibrating hopper bin with untie hopper door provides agitation to promote the material transfer at a constant rate. Stairs and a working platform provide access to the bag untie door. The customer loads the bulk bag onto the unloader using a fork lift, but an optional self-contained hoist is available.
This custom designed big bag unloader transfers Calcium Carbonate from bulk bags to downstream equipment using a screw conveyor. It was manufactured for a large U.S. plastics compounding manufacturer based in Texas. The system shown is designed to dispense and convey Calcium Carbonate, which has a bulk density of 30 to 80 pounds per cubic foot, at flow rates of 9,000 pounds per hour.
This material transfer system loads and unloads plastic scrap in bulk bags and boxes for recycling. The custom manufactured components included (3) bulk bag unloaders with vibratory agitation, (2) bulk bag filling machines (shown in picture), and (1) bulk box loader. After competitive testing, the bulk bag filling machines proved to be the only ones capable of effectively transferring the large, interlocking shreds of plastic scrap into bulk bags.
This bulk bag handling equipment includes a poly bag filler located under a bulk bag unloader. The 2 ton electric hoist and powered trolley loads the 2,500 pound bulk bags into the unloader. The bulk bag is then emptied and agitated with paddles. Transfer of material is handled by a twin screw feeder onto a scale. The 50 pound poly bags are held in place with a pneumatic bag clamping assembly. The entire process is coordinated through the system control panel and digital weight indicator. Once filled, the bags are sealed and ready for the mixing process.
This batching system was custom designed for 7 types of carbon black. They are all simultaneously fed into individual weigh hoppers. Small vibratory feeders meter the carbon black into 16 cubic feet, net weigh hoppers supplied with air-operated, fast acting roller slide gates.
Upon discharge, an air-powered industrial vibrator cleans the weigh hopper before the gate closes. The batch is then transferred by belt conveyor to a 16 cubic feet confirmation (check weigh) hopper, where the final weight is either accepted or rejected. Accepted batches go directly into an industrial mixer. If a batch is out of tolerance, it is rejected via a pantleg diverter into a portable storage container at floor level.