Efficient Big Bag emptying with

Comprehensive range of components and modules, intuitive in operation.

Standard or special solutions that match exactly with your plant environment.

High-quality materials and workmanship – for own and purchased components too.

Hygiene package: From hygienic design in construction to documentation for your qualification.

We cover
the whole range!

Do you have a simple emptying task?
Is your task more difficult, meaning you are looking for more individuality?

You always get quality and reliability from us.

Simple emptying stations

Individual emptying systems

Construction of Big Bag
emptying stations

Lots of components – only one aim:
Safe, fast and residue-free emptying of your Big Bags

A Big Bag emptying station essentially consists of the following core components:

  • 1Base frame
  • 2Feed solution
  • 3Big Bag connection systems
  • 4Emptying aids
  • 5Product preparation
  • 6Conveying
  • 7Control
  • 8Safety guards

Essential functions
and versions


Base frames must be designed stably so that they have the load capacity to carry the Big Bags and the components attached. Our frame versions:

Normal or stainless steel

Modular in various heights

Square or round profiles for hygienic zones

Feed solutions

The Big Bags need to be lifted quickly and brought safely into their emptying position. We offer three options for loading the station with Big Bags:

Fork-lift truck and spider clamp

Combination with existing crane track

Crane runway integrated into the frame

We recommend working with crane tracks at high numbers of Big Bags to be processed.

Connection systems

The Big Bag outlet is fixed in the connecting system before emptying. Aspects to be considered in the choice of the optimal connection system are the dust formation of the product and the type of operation:

low-dust and dust-proof connecting systems

operated manually or pneumatically

Standard emptying equipment (low-dust)

Simple, low-cost and low-dust emptying devices

Stainless steel with various surfaces

With or without aspiration fittings

Strong clamp system with double seal

Manual operation with ergonomic manual tensioner

JEL Emptying funnel (dust-proof)

Emptying funnel with strong, dust-proof cover

All stainless-steel with carious surfaces and coarseness depths (also in hygienic design)

Double seal

Strong clamp system with double sea

Funnel cover pressed manually or pneumatically

Rocker equipment

Two support brackets lift the Big Bag sideways while emptying. Material bridges above the outlet are brought to collapse and even products with unfavorable flow properties can be discharged reliably.

Driven by pneumatic cylinder.

Rock function can be programmed via the control pannel.

Point and beam pressure systems

Mounted on the side of the frame, they press against the outer side of a Big Bag – punctual or over a larger area. Even caked product inside of the Big Bag is thus broken up and discharged.

Punctual or area pressure impulse, depending on product properties.

Driven by pneumatic cylinder.

Vibration tables

The Big Bag is placed on the U-shaped vibration table while an oscillation motor sets the support plate in high frequency vibration. In that way, the material flow is set in motion immediately when the outlet is opened.

Spring tightening

Springs in the base frame ensure that the Big Bag is tightened upwards during the emptying process thus supporting emptying of all residual material by avoiding folds.

No waste of material.

No residue in the Big Bag when disposing it.

Product preparation

Has your product compacted in the Big Bags during transport or storage? Have clumps formed? Or do you want to ensure that no foreign bodies are in the product when emptying the Big Bag?

We combine your Big Bag – emptying solution with various components so that your product can be processed optimally after emptying.

Sieving technology

Safety sieving (foreign body separation)

Straining sieves (in case of clumps)

Over sized and fine grain sieving (separation of unwanted coarse and/or fine particles)

Grading (if you need various grain size fractions).

Crushing technology

Crushing of agglomerations or clumps using lump breakers

Conveying & dosing

We offer you the option to enlarge your emptying station with various discharge, conveying and dosing units.

Mechanical dosing and transport units

Tube and trough screw conveyor

Conveyor belts

Discharge sluices

Discharge devices for viscously flowing products

Pneumatic conveyor and dosing units

Pneumatic feed shoe to beattached below emptying funnel or interim container

Blow-through sluices for dosed product feed into pneumatic conveyor lines

Discharge devices

Support the discharge of bulk solids with poor flow properties or caked on product from Big Bags.

Ideal to prevent bridge and tunnel formation in material discharge

Control Systems

Whether simple or complex – the following generally applies: An emptying system must always be error-free, intuitive and safe to operate.

The more complex the emptying system is, the more important it is…

that the operator maintains an overview of the process and

that operator errors are ruled out, e.g., by automation or certain control mechanisms.

Engelsmann offers you a comprehensive selection of control options: from the simple control unit to fully automated and programmable control systems with touch screens.

Safety guards

Safety guards are an important part of safety concepts.

They offer two advantages to the system operators:

They ensure that the operators have sufficient safety distance to critical points.

They prevent unauthorized persons being able to intervene in the process.

From us you get both: simple safety guards and special solutions with many different safety features or walkable operating platforms.

JEL SafeConnect: The adapter for
different outlet lengths!

Do you have to handle Big Bags with outlets in different lengths and do you look for a flexible, compact attachment system?

JEL SafeConnect is for connection of Big Bags with different outlet lengths in a simple and safe way. The very low construction height allows to implement it even in existing systems.

Dust-proof Big Bag emptying

Very low construction height

For Big Bag outlets with different diameters and lengths

Pneumatic seal or mechanical closing

Simple and user-friendly handling

Very compact– easy to integrate into emptying frames

Special sizes are also possible!

Emptying aids

Materials with unfavorable flow properties often can not be emptied without aids. The most common problems when emptying these products out of Big Bags are the formation of bridges or tunnels and the clumping of the product.

Free flowing

The product in the Big Bag has very good flow characteristics. It can be completely emptied without any problems and without additional aids.

Bridge formation

The product compacts directly above the Big Bag outlet and forms a bridge that prevents the material from flowing through the outlet.

Tunnel formation

Caking material sticks to the sides of the Big Bag and builds up a narrow tunnel inside. The product can flow out of the Big Bag  through this tunnel only.


The materials solidifies in the Big Bag while storage – sometimes so massively that only large clumps remain, that cannot be emptied or processed. In extreme cases, a single, so-called “monoblock” forms.

Emptying aids can also impact from outside the Big Bag and ensure a continual flow of material during the emptying process even when the products have poor flow properties. Engelsmann emptying aids work either with the physical energy of rockers or with vibration. In each case, the energy generated from outside is transferred via the Big Bag to the product that is stored inside.

Project Highlights
Big Bag emptying

Get you Big Bag Emptying Solution
in 3 steps


We will listen, ask questions and make suggestions

We will analyze your problem in detail and show you possible solutions. Tests in the pilot station with your original product ensure process security in real operation.


Your machine

The work of our designers now begins. Your Big Bag solution takes place in close consultation with you. After you have approved it, our manufacturing team takes over.


It works.

You have received your Big Bag solution. Now our service team takes over and ensures the smooth commissioning at your location. Of course, they are also there for you during your ongoing operation.