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Super Sack Unloaders and Bulk Bag Dispensers

Super Sack Unloaders and Bulk Bag Dispensers with Dust Control Technologies

Carolina Material Technologies provides 3Sigma's premier Bulk Bag Unloaders that offer Dust-Free Super Sack Dispensing with Guaranteed Discharge of virtually any material. Our Super Sack Unloaders are offered in 3 Main Models: Short-Frame Model, Hoist-and-Trolley Model, and the Fork-Truck Loaded Model. There are two main types of agitation for increasing material flow: Massage-It™ Paddle Agitation (Ultra Heavy-Duty Pipe Agitators that move material into the Critical Flow Path) and Shape-It™ Vibration System (Shapes the Bulk Bag to the Steep Sloped Platform). Each super sack unloader model can be custom designed to fit your plant, and with your choice of 3Sigma's Features.
The unique Contain-It™ Access Chamber boasts a large and enclosed bulk bag handling area for the operator to tie and re-tie the bag with ease. The large bulk bag chamber is engineered to contain any accidental spills or dust that occurs from the super sack dispensing process. Custom matched to your downstream equipment: Hopper, feeder, rotary valve, slide gate, screw conveyor, pneumatic conveyor, etc. Inside the chamber, we offer the Close-It™ Super Sack Valve System that allows operators to close off and remove half empty bags, or to use as a batch control valve during the bulk bag unloading process. The Clamp-It™ Bulk Bag Spout Clamp provides an air actuated seal that lowers a stainless steel plate once the bag is in place, and secures the bag spout open in order to ensure proper material flow. It features 8” of vertical clearance to manipulate the bag spout, which compares to 2-4” for most competitors. No more knuckle busting! Additional features include: integrated Dust Collection System, Collapse-It™ Bulk Bag Evacuation System, and more.

View our WHITE PAPER that was Featured in Powder Bulk Solids Magazine.

Features and Advantages


● Contain-It™ Super Sack Access Chamber
Extra Large Bulk Bag Access Chamber (32”x32”x20”) for handling super sacks in a controlled space where dust and leaks are contained.

● Close-It™ Super Sack Valve System
3Sigma's Bulk Bag Valve enables the operator to re-tie and remove half empty super sacks, or to use as a batch control valve during the unloading process.

● Clamp-It™ Super Sack Spout Clamp
Provides an air actuated seal that keeps bulk bag spout attached to discharge outlet. Features 8” of vertical clearance to manipulate the bag spout, which compares to 2-4” for most competitors. No more knuckle busting.

● Dust Collection System
Extract dust from the containment chamber when opening the door to capture dust. Keeps factory environment clean and operators happy.

● Collapse-It™ Bulk Bag Evacuation System
This feature allows the operator to extract any lingering dust from the super sack after the unloading process is finished, and then collapses the empty bulk bag for easy folding.

● Access Chamber Discharge Outlet
Discharge your material straight into your new or pre-existing downstream equipment, such as hoppers, feeders, rotary valves, slide gates, screw conveyors, pneumatic conveyors, etc.

● Complete the Unloading Process with a Bag Compactor
Lifting, Unloading, and Dispensing Super Sacks has never been easier. After the unloading process is complete, simply insert your empty Bulk Bags into our Compactor Machine and watch it automatically compact 7-10 Super Sacks into a 2' x 1' Plastic-Wrapped Bale!

Bulk Bag Unloader Models

Super Sack Unloader General Information

Bulk bag unloaders (also called bulk bag dispensers or super sack unloaders) typically consist of a steel frame that supports the unloading of material from a FIBC super sack into the industrial process. However, not all bulk bag unloaders are created equal. We provide 3Sigma Bulk Bag Unloading Systems that make handling of super sacks practical and efficient by providing an easy and safe method to lift, support and discharge material. 3Sigma Bulk Bag Unloaders were specially engineered for dust-containment and ease-of-access for the operator. At CMT, we integrate design and integrate our super sack unloaders with other process handling equipment in order to provide controlled, regulated discharge with a variety of feed devices and weight control options.
General Customer Goals
Dust-Free Bulk Bag Unloading.
Discharge difficult/densified Products
A Bulk Bag Discharger for Total Bulk Bag Discharging
Minimal moving parts/ Minimal maintenance.

Super Sack Unloaders are typically implemented when capacity requirements dictate a change from 50 lb. bags to FIBC bulk bags, in order to save on material and labor costs. Understanding the properties of your material in the FIBC bags and setting your goals is a critical component to desigining your system.  Many suppliers overlook the actual bulk bag and dive into offering you their standard bulk bag unloader – the “one size fits all” mentality.  However, the properties of the Bulk Bag can impact the unloading process. Some items of concern include: Dimensions; Lined or Unlined; Loose Liner, Tabbed Liner or Glued Liner Flat Bottom or Cone Bottom; Single Trip or Multi-Trip; Bulk Bag Outlet Spout Dimensions; Bulk Bag coatings, etc.
Super Sack Unloader Hoist and Trolley System
Bulk Bag Unloader with Hoist and Trolley
Stand-Alone Super Sack Unloader Model that includes the Main Frame, the Top Frame, the I-Beam Bar, the Hoist and Trolley, the Bulk Bag Access Chamber, and the Bulk Bag Support Surface Dish to Hold Super Sack during Unloading Process.
Super Sack Unloader Forklift Model
Bulk Bag Unloader Forklift Loaded Unit
The 3Sigma™ Super Sack Unloader Forklift Model employs a Bulk Bag Lifting Frame embedded with an Adaptor that has two ‘shelves’ to support the Forks. Internal springs provided within each leg elongate the bulk bag during product discharge.
Super Sack Batch Unloader with Portable Fork-Lift Frame
Bulk Bag Unloader Split-Frame for Limited Headroom
The 3Sigma™ Super Sack Batch Unloader incorporates a Portable Fork-Lift Split Frame that allows the Bulk Bag to be emptied at different stations. Easily place the super sacks at the bulk bag unloader station, and watch the material be unloaded, weighed, and batched with a vibratory batch feeder.
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Super Sack Unloader with Integral 50lb Bag Dump Station
Now you can Unload and Convey your product from Bulk Bags and 50lb Bags all in one place with the 3Sigma™ Super Sack Unloader Bag Dump Station. This system has an Integral 50lb Bag Dump Station with dust collection so the operator can safely discharge product.
Shape-It™ Super Sack Unloader Shaping the Bulk Bag
The 3Sigma™ Shape-It Super Sack Unloader Features a steel platform dish where the bulk bag is “shaped” with vertical vibration from an eccentric drive. The vibration shapes the bulk bag into an optimal discharge mold, where it now is in complete contact with the hopper.
Super Sack Unloader with Integral Batch Feeder
This Super Sack Unloader Features all the benefits of the Shape-It™ including Vibration Agitation Technology for Optimal Material Flow. The product gets discharged into a hopper, where it is weighed and transferred to the next step in the process via 3Sigma™ Batch Feeder.
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Recent Installations
Complete Material Handling System for Large Composite Decking Company

We Can Design and Provide Your Entire Process System, including Silos, Pneumatic Conveyors, Bulk Bag Unloaders, Feeders, Mixers, and More
A large Composite Decking Company reached out to CMT to design and install a new Process System in their expansion plant that included multiple Super Sack Unloaders, Pneumatic Conveyors, Dust Collectors, Batch Feeders, Mixers, and Silos. Along with the equipment, we provided various components including: Flow-aids and Vibrators, Pneumatic Blowers and Vacuums, Diverter valves, Hammertek Elbows, Venturi Eductors, Filter Receivers, Level controls, Rotary Airlock Valves, Flexible Sleeves, and more.
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Email us at info@cmtnc.com or Fill Out the Contact Form Below


220 Crompton St
Charlotte, NC 28273
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