01
The top
The open top accepts material from any conveyor, spout or chute with no connection needed. Filling stays fast and simple; the top is tied or folded closed before handling.
Classic Structure
StandardOpen Top / Discharge Spout FIBC
Open top · Discharge spout
Classic Structure
What is this structure
This structure pairs the simple, unrestricted filling of an open top with a discharge spout sewn into the bottom. Material drops in quickly from above, and empties through the spout into a hopper, screw conveyor or receiving line below. It suits operations that fill fast but need a controlled, repeatable discharge — without the dust and effort of tipping.
Key Features
- Wide open top for fast, unrestricted filling
- Bottom discharge spout for controlled emptying
- Flow starts and stops by untying and re-tying
- Less manual tipping, less dust at discharge
- Size, load, fabric, spout and liner customizable
- Suits repeated emptying into hoppers and conveyors
02
The bottom
A discharge spout is a tubular outlet in the bottom centre, closed by tying. Untying it releases the product in a controlled flow into the receiving point below, and tying it off again stops the flow. This gives repeatable, dust-controlled discharge without manual tipping.
03
Suitable Materials
Granular, powder and lump materials that need a controlled flow at discharge — mineral concentrates, aggregates, resins, sugar and other free-flowing bulk. Fine powders also benefit from the spout’s dust containment at discharge, though a tighter filling top is worth considering if dust is generated during filling too.
Handling Advantages
How it loads, discharges and travels
Loading
Fast, unrestricted top filling from any line — no filling-head connection needed. The open top keeps loading simple even at high throughput.
Discharge
The bottom spout ties off for clean, metered discharge into hoppers, screw conveyors or process lines. Flow can be started and stopped by untying and re-tying, which suits repeated emptying and reduces residual material and dust.
Transport & Storage
The flat-ish base around the spout still stacks on a pallet, though the spout sits at the centre. Bags store and transport like standard flat-bottom units, with the discharge point protected during transit.
Open Top / Discharge Spout FIBC
Typical Specification
- SWL
- 500–2000 kg (confirmed against your material)
- Safety Factor
- Typical 5:1
- Size
- Customized to material, container and stack height
- Fabric
- Customized per application (typically 140–200 gsm)
- Top
- Open top — full-width opening
- Bottom
- Discharge spout (length/diameter customizable)
- Lifting
- 4 loop / 2 loop / customized
- Liner
- Optional; recommended for fine powders or moisture-sensitive materials
- Printing
- Custom printing available
Important Note
The specifications shown are typical configurations. Final specifications should be confirmed according to the packed material, bulk density, filling method, handling method and transportation conditions.
Material Guide
Materials this structure can carry
Six practical examples selected around the bag opening, discharge method and common African mining, construction, agricultural and industrial supply chains.
Maize Grain
Whole maize loads rapidly through the open top and empties in a controlled stream through the bottom spout. Food-contact use requires the appropriate clean configuration.
Green Coffee Beans
Free-flowing green coffee beans benefit from fast top loading and measured discharge into sorting or roasting equipment.
Cocoa Beans
Dry cocoa beans can be loaded without a filling-head connection and discharged cleanly into downstream processing bins.
Fertilizer Granules
Granular fertilizer fills quickly from a conveyor and the bottom spout supports controlled transfer into blending or application equipment.
Solar Salt Crystals
Coarse salt crystals are free-flowing enough for open filling and controlled spout discharge; liner selection follows moisture exposure.
Plastic Resin Pellets
Resin pellets fill rapidly and discharge predictably through a centered outlet into hoppers or compounding equipment.
A wide open top for fast filling with a bottom discharge spout for controlled, dust-tight emptying.