Product
Ventilated FIBC
Mesh or perforated panels let air move through the load — the standard choice for produce, firewood and biomass that must not sweat in storage or transit.
A ventilated FIBC replaces part of the woven body with mesh or perforated fabric. Air moves through those panels, so moisture released by the load can leave the bag instead of condensing on the inside of the fabric.
It is the standard answer for produce such as onions and potatoes, for split firewood, and for wood chips that are still losing moisture. In each case a solid bag would trap the water the load gives off, and the load would arrive wet, mouldy or short of the moisture figure the buyer contracted for.
The design decision is the mesh-to-solid ratio. More mesh dries or cools faster and gives less protection from rain, dust and light; less mesh protects the load but slows the airflow. Tell us what the airflow is for and where the filled bags are stored, and we will set the pattern and the aperture to suit the product.
Product Summary
A woven bag with mesh panels or a perforated body so air moves through the load. It is specified for produce, wood and other materials that must not sweat in storage.
Core Construction
The body is built from the same woven PP as a standard bag, but part of it is replaced with woven mesh panels or perforated fabric. The mesh areas are stitched into the body between solid fabric panels, so the bag keeps its strength while air passes through the vented area.
The proportion of mesh to solid fabric is the main design decision: more mesh means faster air movement, less means more protection from rain, dust and light. That ratio is set from what the load has to do — cure, dry, cool or simply avoid condensation during transport.
Key Benefits
| Benefit | Why It Matters |
|---|---|
| Stops condensation in the load | Air movement through the panels lets moisture escape instead of condensing on the inside of the fabric. |
| Lets produce and wood cure | Onions, potatoes and split firewood need airflow to finish drying; a solid bag traps the moisture they release. |
| Keeps a standard bag shape | It fills and lifts like the solid version, so existing filling and handling equipment still applies. |
| Mesh ratio set to the job | Venting can be tuned from a few panels to a mostly mesh body, depending on the drying or cooling requirement. |
Configuration Options
| Option Group | Available Range | Notes |
|---|---|---|
| Size | 60 x 60 x 90 cm to 100 x 100 x 130 cm (typical) | Produce loads are usually sized by the fill weight rather than by a target cube. |
| Venting pattern | Side mesh panels, full mesh body, perforated fabric | The mesh-to-solid ratio is set from the airflow requirement you describe. |
| Mesh specification | Standard woven mesh apertures | Aperture size is matched to the product so small items cannot escape. |
| SWL / Safety Factor | SWL 500-1,000 kg | Mesh panels reduce the solid fabric area, so the rating is set from the pattern. |
| Top | Open top, duffle top with drawcord | A drawcord duffle keeps the load in while still allowing air out. |
| Bottom | Flat bottom, discharge spout | A spout is used where the load is tipped rather than emptied by hand. |
| Lifting loops | Four corner loops | Cross-corner loops are available where a higher pick is needed. |
| Printing & packing | 1-2 colours; baled or boxed | Print area avoids the mesh panels. |
Performance & Range
Typical working range is 500-1,000 kg SWL, with the rating set by the venting pattern and the solid fabric area remaining. Airflow performance depends on the load, the stack and the ambient conditions, so the venting pattern is confirmed against your drying or cooling requirement rather than quoted as a fixed figure.
Validation & Testing
In-house checks cover fabric and mesh weight, panel stitch counts, filled dimensions and a visual check of the mesh attachment on each batch. Third-party testing is arranged on request and quoted separately.
Limitations
Not suitable where the load must stay dry in rain or damp air, where fine dust must be contained, or where the product is small enough to escape through the mesh. Mesh panels also reduce the printable area and the load rating compared with the same size of solid bag.
Selection Guidance
- Best For
- Produce, split firewood, wood chips and other loads that release moisture and need airflow during storage or transport.
- Consider Alternatives When
- The load must be protected from rain, the product is a fine powder, or the material is small enough to fall through the mesh — a solid or lined bag is the better answer.
- Must Confirm Before Quoting
- What the airflow is for (dry, cure, cool or prevent condensation), storage under cover or in the open, product size against the mesh aperture, and the SWL.
Test & Production Evidence
| Evidence Type | Evidence Note | Stage |
|---|---|---|
| Drawing / Artwork | Venting pattern drawing showing mesh panel positions and the solid-to-mesh ratio. | Approval |
| Sample | Sample bag available for a trial fill and a short storage trial with your product. | Sampling |
Evidence Note
Venting drawings and sample bags can be shared with a named buyer on request. Trial storage results belong to the customer's product and conditions.
Related Applications
Information Required for Quote
What the airflow has to achieve Required
Dry, cure, cool, or simply stop condensation inside the bag.
Product size and shape Required
Mesh aperture is set so the product cannot escape through the panel.
Storage conditions Required
Under cover or in the open, and roughly how long the filled bag is stored.
Required SWL Required
Venting pattern affects the rating, so we set it from your figure.
Handling method
Forklift, crane or frame — this sets the loop type.