Carolina Material Technologies
Carolina Material Technologies - Bulk Material Handling Solutions
Charlotte, NC 704-846-3737

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Bulk Bag Unloaders

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 3Sigma Bulk Bag Systems 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 Unloader Brochure
  • Reduced labor
  • Better dust control
  • Increased safety
  • Cleaner working environment
  • Increased productivity
  • No packaging waste
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Unload your ground/unground hemp from your bulk bags with 3Sigma's Massage-It™ Super Sack Unloader and feed it accurately with the Geomate™ Vibratory Feeder into your conveying system or extractor.


HEMP - From Bulk Bag to Extractor

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.

BBU - Hoist and Trolley System


CMT provides 3Sigma's Hoist and Trolley Bulk Bag Unloader. Easily discharge your Super Sacks without the need of a Fork Truck.

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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.

General Bulk Bag System 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.

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.



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.

The compacted bulk bag is set into the bag shaping platform.  Vertical Vibration is then used to properly 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.

Bulk Bag Discharger Agitators

3Sigma Dual Agitators in Action

Bulk Bag Discharger Shape-It - Beofre Afrer





Bulk Bag Unloader Massage-It

The pneumatically operated agitators push material from the edge of the  bag to the outlet flow channel while breaking compacted material.

- Vertical Vibration shapes the Bulk Bag to the Steep Sloped Platform prior to opening the bag
- Cycled as necessary for discharge
- No Moving Parts

Bulk Bag Unloader Platform

Fully Welded Bag Shaping Support Platform

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
Bulk Bag Unloader - Contain-It 001 Sm
Bulk Bag Unloader - Contain-It 002 Sm
Bulk Bag Unloader - Contain-It 003 Sm

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.

Don't Get Stuck With This
Bulk Bag Unloader - Bad Design
Bulk Bag Unloader - Bad Design

Pan mounted massage paddles unseal the bag and spills

Pan mounted massage paddles unseal the bag and spills

Bulk Bag Unloader - Bad Design
Bulk Bag Unloader - Bad Design

Access chamber doubles as a hopper, creating a mess, with no containment

Small access chambers cannot contain the inevitable spills

Bulk Bag Unloader - Bad Design
Bulk Bag Unloader - Bad Design

Clamping systems without a chamber caused spills.

Clamping systems without a chamber caused spills.

Design Issues
  • Dust-Tight Bulk Bag Unloading
  • Guaranteed Discharge with a Bulk Bag Dischrager that has No Moving Parts
  • Full Platform/Bulk Bag Support
  • The Bulk Bag Discharger never Breaks the Spout Seal
  • Patented Liner Retention System
  • Easiest/Least Steps to Load and Unload
  • The Bulk Bag Unloader requires Minimal Maintenance
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Tote IBC Systems
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Weighing Scales
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