01Fertilizer
Preparing granular and powder fertilizer for shipment in big bags. Drop height for friable granules and bag liners for hygroscopic products are considered.
Fertilizer and Granulation PlantsBig Bag Filling System – Weighed Filling of FIBC Bags
PRO MAKINA · Big Bag Filling
- Packaging
- Big bags (FIBC)
- Weighing
- Load cells; layout per project
- Connection
- Hanging points and filling spout
- Discharge
- Forklift or conveyor — per site
Overview
Controlled Filling of Bulk Products into Big Bags
In a big bag filling station, the empty FIBC is hung on the frame by its loops and its inlet is connected to the station's filling spout. As product flows from the upper hopper or feeder into the bag, the weight is monitored by load cells; feeding stops when the target weight is reached.
The feeding method is selected for the product's flowability and bulk density. Switching from coarse to fine feeding near the target weight helps control the fill weight. Dust extraction connected to the spout removes displaced air and dust from the bag in a controlled way.
Filling can be done with or without a pallet. The filled bag is released from the hangers and removed by forklift, roller conveyor or another method suited to the site. Bag size and filling height determine the design of the station frame.
01Process Flow
Big Bag Filling Process Flow
The diagram shows the flow in which the big bag is positioned, the loops and inlet are connected, product is fed and weighed in a controlled way, and the filled bag is released and removed.
Scroll horizontally to view the full diagram.
Filling line
- 1
Bag positioning: The empty big bag is placed in the station on a pallet or the floor.
- 2
Loop and spout connection: Loops are hooked on the hanging points and the inlet is secured on the spout.
- 3
Feeding and weighing: Weight is monitored by load cells during feeding; fine feeding starts near the target.
- 4
Release and removal: Feeding stops at the target weight; the bag is unhooked and removed by forklift or conveyor.
Dust extraction
- A
Spout extraction: Air and dust displaced from the bag during filling are extracted to a filter.
Drop height for friable granules, dust extraction for dusty products and the feeding method for poorly flowing products are assessed separately.
02Applications
Big Bag Filling Applications
01
02Sand and Minerals
Filling sand and mineral products into high-tonnage bags. For abrasive products, the spout and feeder are protected against wear.
Mining and Mineral Processing
03Powder Products
For fine powders, dust extraction and spout sealing are key in big bag filling. The feeding method is selected separately for poorly flowing powders.
Dust Collection Systems
03Design & Manufacturing
Custom Big Bag Filling Design and Manufacturing
PRO MAKINA engineers big bag filling stations around bulk density and flowability, big bag type and size, target fill weight and site layout. Frame and hanging arrangement, filling spout, load cell layout, feeding, dust extraction and discharge are designed together.
- Frame and hangers sized to the big bag
- Load cell weighing
- Filling spout with dust extraction
- Forklift or conveyor discharge
Process Design Data
- 01
Product Density
Bulk density, flowability, friability and dustiness.
- 02
Target Weight
Fill weight per bag and filling height.
- 03
Big Bag Type
Bag size, loop arrangement and inlet type.
- 04
Load Cells and Feeding
Weighing layout, coarse and fine feeding.
- 05
Filling Geometry and Discharge
Frame height, pallet use, forklift or conveyor access.
Filling capacity and weighing accuracy are defined from product and bag data; no generic values are stated on this page.
04Gallery
Big Bag Filling Photo Gallery
05FAQ
Big Bag Filling FAQ
How does a big bag filling system work?
The empty bag is hooked on and its inlet connected to the spout; weight is monitored by load cells during feeding and feeding stops at the target weight.
How does it differ from open mouth bagging?
Big bag filling is a framed station for high-tonnage FIBC bags. Open mouth bagging is for small and medium bags.
Can bags be filled without a pallet?
Yes; filling can be done with or without a pallet. The choice depends on bag type, discharge method and site layout.
What about dusty products?
The spout is connected to dust extraction and the spout-to-bag seal is designed for the product properties.
What information is needed for a quotation?
Product type and bulk density, big bag size and loop arrangement, target weight, required capacity and discharge method.
06Resources
Related Machines and Plants
Open Mouth Bagging SystemFilling powder and granular products into open-mouth bags.Palletizing LinesStacking filled bags and cartons onto pallets.Dust Collection SystemsCapturing dust from process air with filters, cyclones or scrubbers.Packaging & Bagging Systems
Related machine groups:Packaging & Bagging SystemsDosing SystemsDust Collection SystemsConveying Systems
Technical Quotation
Request a technical quotation for a big bag filling system
Share your product, big bag type and target weight, and we will define the filling station together with you.
Information Needed for a Technical Quotation
- Product type and bulk density
- Flowability and dustiness
- Big bag size and loop arrangement
- Target fill weight
- Required filling capacity
- Discharge method (forklift / conveyor)