Industrial processes that require dosing material from a bag into mixers, hoppers, or production lines demand a container with controlled discharge at the base. This big bag with a double valve —top loading and bottom discharge, also called a double-valve FIBC or discharge super sack— is manufactured by Maxtens from virgin woven polypropylene with an inner liner, and is the professional format for operations where the bag is not cut but emptied and reused.
Key Benefits
- Dosed and Clean Discharge: Bottom valve allows content to be released directly into hoppers, mixers, or process lines without opening the bag, maintaining traceability and reducing dust generation.
- Controlled Top Loading: Loading valve compatible with automated packaging systems, ideal for connecting to plant spouts or bulk filling tubes.
- Insulating Inner Liner: Plastic barrier that protects the content from the outer fabric and blocks moisture, cross-contamination, and fine migration.
- Operational Reusability: By not being cut when emptied, the bag can return to the packaging line in closed process cycles, a real advantage over disposable bags.
- Maxtens Professional Grade Fabric: Virgin polypropylene with UV treatment and industrial stitching on handles, base, and stress areas, sized with a 5:1 safety factor.
Applications and Typical Uses
- Industrial processes with dosing to hoppers or mixers (cement, mortar, gypsum, dry aggregates).
- Packaging and discharge of granulated fertilizers in agroindustry.
- Handling of chemical raw materials, pigments, pelletized polymers, and resins in plants.
- Mining operations, fine aggregates, and mineral processing.
Quality and Durability
The double valve is an expensive solution in generic format because it requires precise assembly and well-finished additional seams; a poorly manufactured bag fails at the discharge valve area, not the main fabric. Maxtens reinforces both valves with industrial stitching and an inner sleeve, and verifies the 5:1 safety factor on the assembly. For plants that package and empty the same bag multiple times, the difference between a premium FIBC and an economic one is measured by the number of cycles before failure.
In which processes is double-spout really justified vs. a normal big bag?
How many times can the same double-spout sack be reused?
Is it suitable for very fine powder or pulverized materials?
Still have questions?
Ask us and we will gladly help you with whatever you need.
| Material and construction | |
|---|---|
| Color | White fabric and black handles |
| Liner finish | Sewn to the outer layer |
| Document pocket | Yes |
| Valve dimensions | 40x50 cm (15.7 x 19.7 in) |
| Valve style | Cross-shaped opening / star closure |
| Liner | Yes |
| Liner material | LLDPE (linear low-density polyethylene) |
| Top opening type | Loading valve |
| Lifting loop type | Cross corner loops, 40 cm (16 in) free length |
| Base type | With discharge valve |
| Construction type | U-Panel |
| Dimensions and format | |
| Big bag dimensions | 90x90x110 cm (35.4x35.4x43.3 in) |
| Strength and performance | |
| Safe working load (SWL) | 1500 kg (3306.9 lb) |
| Safety factor (SF) | 5:1 |
| Durability and protection | |
| UV protection | Yes (high) |
| Presentation and packaging | |
| Presentation | Pack of 30 big bags |
Food grade| Package: Width | 110.0 cm (43.31 in) |
|---|---|
| Package: Height | 54.0 cm (21.26 in) |
| Package: Depth | 55.0 cm (21.65 in) |
| Package: Weight | 75.0 kg |
Official MAXTENS warranty
What's covered
Confirmed defect: replacement or refund of the amount paid.
What's not covered
Pago & Seguridad
