Bulk Bag Unloaders - 3Sigma Bag Handling Equipment Manufacturer

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Bulk Bag Unloaders
Also commonly called bulk bag unloaders, bulk bag dispensers, super sack unloaders, super sack dischargers, super sack dispenser, big bag unloaders, big bag dischargers, big bag dispensers, FIBC unloaders, FIBC dischargers and FiBC dispensers, provide a safe, dust-free and convenient way to handle and discharge bulk bags. CMT provides Bulk Bag Unloaders that make handling of bags practical and efficient by providing an easy and safe method to lift, support and discharge.  Our bulk bag unloaders eliminate dust and spillage associated with other methods of bulk bag handling. Since CMT specializes in bulk material handling equipment, we build systems that provide controlled, regulated discharge with a variety of feed devices and weight control options.
Bulk bag dischargers are typically implemented when capacity requirements dictate a change from 50 lb. bulk bags to save labor costs and to minimize dust.  The most crucial aspect in providing you with a successful bulk bag unloader is understanding the bulk bag(s) to be used, your goals and concerns.  Many suppliers overlook the actual bulk bag and dive into offering you their standard bulk bag unloader – the “one size fits all” mentality.  Bulk Bag 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. If you need supplementary bulk material handling equipment, please visit Carolina Material Technologies.
General Bulk Bag Unloader Customer Goals
  • Dust Free Bulk Bag Unloading.
  • Unload your densified product reliably with a Bulk Bag unloader.
  • A Bulk Bag Discharger for Total Bulk Bag Discharging
  • Minimal moving parts/ Minimal maintenance.
BBU Massage-It Model Promo
3Sigma's Bulk Bag Unloading System with the Massage-It™ Agitation Paddles ensures that material flows out of the bag with ease.

Super Sack Unloader - Titanium Dioxide
Unloading Titanium Dioxide from a Bulk Bag using a 3Sigma Bulk Bag Unloader.

BBU to Feeder with AMC Conveyor
A Shape-It™ Bulk Bag Unloader was provided to properly discharge PVA powder. Material is unloaded into a GeoMate™ Vibratory Feeder, then discharges into a bag dump hopper, which feeds directly into an Aeromechanical Conveyor.
Proper Bag Discharging
Proper bag agitation is crucial in discharging your product.  3Sigma offers three methods of agitation, recommending the proper bag agitation system for your products, all with a guarantee of product discharge.
The compacted bulk bag is set into the bag shaping platform.  Vertical Vibration is then used to shape the bulk bag to the steep sloped platform prior to opening the bag.  Once set the bag spout is easily accessed and the vertical vibration is used periodically, if needed, to discharge product.  All with no moving parts.
Dual agitators are used with the most difficult to discharge products.  Heavy duty pipe agitators are used to ensure product discharge, with Massage-It agitators pivoting a full 90 degrees. The pneumatically operated agitators provide plenty of force to loosen the material in the super sacks.
3Sigma Dual Agitators in Action
The pneumatically operated agitators push material from the edge of the bag to the outlet flow channel while breaking compacted material.
Fully Welded Bag Shaping Support Platform
Total Containment
CMT’s Bulk Bag Unloading System offers a completely dust-tight access chamber that contains dust within a large, easy to access chamber.  Our pneumatically actuated bulk bag spout clamping system completely seals the bulk bag outlet spout thereby eliminating the most poignant dust leakage potential. Contact us for a complete project analysis.
- Extra Large Chamber
- Sealed Bag access
- Contain all leaks and spill
Our bulk bag unloaders minimize dusting, as the bag spout is connected to an internal cylinder, located within the isolation chamber. The bulk bag is clamped via air cylinders thereby providing a positive seal between the bag and downstream equipment within the access chamber.

Please notice how LARGE this access chamber is. Compare this to “gull wing” doors and small square enclosures that make it very difficult to access the bag.
Dust Extraction Port – This port is connected to the access chamber, pulling any dust that may be present due to leakage at the bag seams or stitching, which is especially prevalent with unlined bulk bags. This is located far above the material contact area, allowing for positive dust evacuation, as it will never be plugged by material.

Pan mounted massage paddles unseal the bag and spills
Pan mounted massage paddles unseal the bag and spills
Access chamber doubles as a hopper, creating a mess, with no containment
Small access chambers cannot contain the inevitable spills
Clamping systems without a chamber caused spills.
Clamping systems without a chamber caused spills.
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