Advanced 7-layer co-extruded silo bags for flexible grain storage, UV protection and mechanical strength. Complete with loading, unloading and bulk handling field equipment.
A silo bag (also called a grain bag or bunker bag) is a large-diameter tubular polyethylene sleeve used to store threshed grain at the farm-gate, warehouse or mandi yard.
Grain is filled using dedicated bagging equipment, the open end is sealed, and the sealed environment supports protected grain storage during seasonal and additional capacity requirements.
Each layer is designed to contribute to film durability, UV protection, barrier performance, mechanical strength and reliable sealing.
Multi-layer construction for durability, barrier performance and grain protection.
Designed to improve resistance to outdoor sunlight exposure.
The inner structure incorporates a dark core designed to limit light transmission.
Multi-layer construction supports handling, filling and outdoor storage requirements.
The sealing layer supports reliable closure of the filled silo bag.
| Raw Material | % by Weight | Function |
|---|---|---|
| LLDPE — Film Grade | 50% | Flexibility & strength |
| LDPE — Film Grade | 18% | Processability |
| HDPE — Tear Additive | 5% | Puncture resistance |
| White Masterbatch | 8% | UV reflection & opacity |
| Black Masterbatch | 7% | Light barrier |
| UV Stabiliser | 4% | UV protection |
| Tie-Layer Resin | 5% | Inter-layer adhesion |
| Anti-Block / Slip | 3% | Surface performance |
Select the required bag diameter and length according to grain type, storage requirement and site conditions. Final capacity should be confirmed for the actual grain and filling conditions.
| Diameter | 45 m — Wheat | 45 m — Paddy | 60 m — Wheat | 60 m — Paddy | 75 m — Wheat / Paddy |
|---|---|---|---|---|---|
| 8 ft (2.44 m) | 126 | 94 | 169 | 125 | 211 / 157 |
| 9 ft (2.74 m) | 159 | 119 | 213 | 158 | 266 / 198 |
| 10 ft (3.05 m) | 198 | 147 | 263 | 196 | 329 / 245 |
| 11 ft (3.35 m) | 238 | 177 | 318 | 236 | 397 / 295 |
| 12 ft (3.66 m) | 284 | 212 | 379 | 282 | 474 / 353 |
Capacity note: The figures shown are indicative reference values. Actual storage capacity depends on grain density, filling conditions, bag dimensions and operating conditions. Confirm final capacity during specification.
Apex can provide the field equipment required for loading, unloading and grain transfer, available as part of a bundled solution or custom-hire arrangement.
A tractor-PTO-driven trolley designed to transfer grain into the silo bag while controlling bag tension during filling.
| Overall Length | ≈ 4.2 m |
| Height | ≈ 2.1 m |
| Discharge Tunnel | Adjustable for 8–12 ft bags |
| Drive | Tractor PTO |
A tractor-PTO-driven grain extraction system designed to recover grain from filled silo bags and transfer it directly to transport or downstream handling equipment.
| Overall Length | ≈ 3.6 m |
| Discharge Height | ≈ 3.1 – 3.5 m |
| Film Handling | Integrated slitter & take-up reel |
| Drive | Tractor PTO |
A wheeled intake hopper with inclined conveyor designed to receive grain from a truck or trailer and transfer it to the loading system.
| Transport Length | ≈ 3.2 m |
| Discharge Height | Adjustable ≈ 3.8 – 4.2 m |
| Hopper Width | ≈ 1.9 m |
| Adjustment | Hydraulic conveyor angle control |
Tell us your grain type, required storage capacity and operating location. Apex can recommend the appropriate silo bag and equipment configuration.
Enquire About EquipmentThe 7-layer film process combines material preparation, co-extrusion, cooling, printing, sealing and quality checks before dispatch.
Blending & Dosing
7-Layer Co-Extrusion
Film Cooling
Printing & Slitting
Welding & Sealing
Valve Fitting
Quality Control
Dispatch
Used polyethylene silo bags can be collected, cleaned and directed toward appropriate mechanical recycling pathways.
Used bags collected from operating sites.
Residual grain and soil removed.
Material processed for recycling.
Processed material converted into reusable pellets.
Silo bags can be considered for grains such as paddy, wheat, maize, pulses, barley and soybean, subject to appropriate grain condition and operating practices.
Apex's current reference range covers approximately 8–12 ft diameters and 45–75 m lengths. Final specification depends on the project requirement.
Dedicated loading and unloading equipment can make silo bag operations more efficient. Apex offers loading, unloading and bulk handling equipment configurations.
Yes. Equipment can be discussed as part of a bundled requirement or a custom-hire arrangement.
Share your grain type, approximate quantity, required storage period and location. Our team can help identify the appropriate silo bag and equipment configuration.
Apex Silo Systems provides 7-layer co-extruded silo bags and associated field equipment for flexible grain storage applications.
