Bulk Material Handling
Dust-Tight Big Bag Connection System
SRE
Connect your big bag discharge spout with a dust-tight seal before untying it. Quick and easy to install, this system ensures safe material transfer and minimizes dust emissions — with containment performance up to OEB 4.
VINCI Group / Actemium
30 Years of Bulk Handling Expertise
Containment up to OEB 4
Standard or Custom-Made
The dust-tight connection system — also known as a big bag discharge hopper — connects your big bag discharge spout to your installation during unloading operations. This is the most critical point in the discharge process: where the material leaves the big bag.
Available in a range of sizes and materials, it accommodates all big bag dimensions and a wide variety of products, including fine powders and difficult-to-handle materials. It can be integrated into our big bag dischargers or existing installations.
A Connection System Designed for Dust-Tight Sealing
Thanks to its optimized design, the discharge hopper provides:
- Easy positioning of the discharge spout
- Complete sealing before untying the spout, minimizing the risk of dust emissions
- Optimal safety during material transfer
Options for Your Big Bag Discharge Hopper
Several options can be integrated into the system to meet the requirements of the most demanding industrial environments.
Adjustable Containment Performance up to OEB 4
for products requiring high levels of containment
Flow Assistance Through Vibration or Fluidization
for poorly flowing products
Integrated Dust Extraction Ring
at the connection point
Low-Level Sensor
detects when the big bag is nearly empty, allowing timely replacement
Downstream Integration and Long-Term Durability
Our discharge hoppers integrate easily with any downstream dosing system — rotary airlock, valve or conveyor — and provide excellent long-term durability, even under intensive operating conditions.
Big Bag Outlet Diameter
Up to 500 mm
Safe Material Transfer Meeting ATEX, CMR, FDA and EC 1935 Requirements
The discharge spout connection is the most critical potential source of emissions during big bag unloading. Our systems are designed to meet ATEX and CMR requirements, as well as FDA and EC 1935 standards. Our expertise also covers challenging materials, including hygroscopic products, nanoparticles and heat-sensitive products.
Applications of Our Dust-Tight Connection Systems
The SRE is used in big bag unloading stations handling demanding materials, particularly in industries where containment is a critical safety requirement.
PRODUCTS
fine powders
poorly flowing products
materials requiring high levels of containment
Big Bag Discharge Installations Equipped with Our Systems
Big Bag Discharge with Very High Containment
nanoparticles
Big Bag Discharge + Pre-Dosing — 10 Stations
carbon black
Big Bag Unloading — 7 Discharge Stations
calcium chloride & graphite
Big Bag Unloading — 4 Stations
mortar
Design Your Dust-Tight Connection System with Sofraden Bulk
Engineering & Consulting
analysis of your materials and required containment level
Custom Engineering
dimensions and materials tailored to your big bags and products
30 Years of ATEX & CMR Expertise
After-Sales Service
long-term technical support
Tell Us About Your Product. We'll Design the Right Connection System.
Material characteristics, big bag dimensions and required containment level: tell us about your project, and our team will get back to you with a technical assessment.
Frequently Asked Questions About Dust-Tight Big Bag Connections
It connects the big bag discharge spout to your installation, ensuring a complete seal before the spout is untied, thereby minimizing the risk of dust emissions.
The containment performance can be adapted to meet requirements up to OEB 4.
Yes. The system is available in different sizes and materials and can handle a wide range of products, including fine powders and poorly flowing materials.
Up to 500 mm.
Yes. The discharge hopper can be integrated with any downstream dosing system, including rotary airlocks, valves and conveyors.
An optional low-level sensor can be added to detect when the big bag is nearly empty and help anticipate its replacement.
