Circular FIBC Bag
Circular FIBC bags are specialized containers designed to facilitate the storage and transportation of bulk materials across various industries.
In high-volume material handling, traditional multi-panel bulk bags often introduce unexpected vulnerabilities. Fine chemical powders, food ingredients, and minerals leak through vertical corner seams under transit vibration, polluting your facility and creating costly product loss. A circular FIBC bag solves this exact failure point. Built with a seamless, continuous fabric tube, it eliminates side joints entirely—providing superior sift resistance, exceptional outward strength, and lower unit costs for your material handling line.
As a leading supplier of FIBC bags in Vietnam, EPP Vietnam delivers custom, export-grade tubular bulk bags engineered to streamline powder containment and global logistics.
What is a Circular FIBC Bag?
A circular big bag—frequently referred to as a tubular bulk bag or tubular super sack—is a heavy-duty flexible bulk container woven on a circular loom. Unlike traditional multi-panel designs assembled from separate flat sheets, a circular jumbo bag features a continuous, seamless fabric tube that forms the main body of the container.
Because the body fabric is woven in a single cylindrical piece, the design eliminates vertical side seams altogether. A separate bottom panel is sewn onto the lower rim of the tube to seal the base, while lifting loops are stitched directly onto the reinforced corner regions of the main body. By removing vertical joints along the primary tension points, a tubular FIBC bag provides exceptional natural sift-resistance and consistent structural integrity under heavy outward pressure.
Technical Specifications: Circular Jumbo Bag Standards
| NAME | Circular jumbo bag |
| BAG TYPE | Type A big bag |
| BODY SIZE | Ø1100X1100 H ( +/-15mm) |
| BODY MATERIAL | PP WOVEN FABRIC + ANTI UV-AGENT+ UNCOATED INSIDE+ 178g/m2 |
| LOOP BELT | 4 LOOPS, WIDTH: 70mm, HEIGHT: 300mm, |
| INLET | DIA 450XH500, WHITE COLOR, LAMINATED INSIDE |
| INNER LINER | N/A |
| SAFETY FACTOR | 5:1 |
| SWL | From 1000kg to 1500 kg |
| BAG TOTAL WEIGHT | 1.8 kg |
| DOCUMENT POCKET | PP+ PE, A4 size |
Key Advantages of Tubular Bulk Bags in Industrial Logistics
Integrating Circular FIBC Bulk Bags into your material handling line delivers distinct operational and economic benefits:
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Maximum Sift Resistance: Eliminating vertical side seams removes the primary path through which fine particulate powders leak under stress, making the tubular design naturally sift-resistant.
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Lower Manufacturing Costs: Requiring fewer cutting and sewing steps during assembly allows tubular jumbo bags to offer a lower per-unit cost compared to complex multi-panel alternatives.
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Uniform Stress Distribution: The cylindrical weave distributes outward hydraulic pressure evenly along the perimeter of the bag, reducing localized stress concentrations.
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Streamlined Inbound Storage: Because the main body uses a single flexible fabric tube, unfilled bags fold flatter, saving warehouse space during inbound transit and storage.
Difference Between Circular FIBC Bags, 4-Panel Big Bags, and U Panel Big Bags
Understanding the distinctions between various types of big bags is essential for selecting the most suitable option for your needs. Here’s a comparison of circular FIBC bags, 4-panel big bags, and U panel big bags:
| Feature | Circular bulk Bag | U-Panel FIBC Bag | 4-Panel FIBC Bag |
| Seam Architecture | 0 vertical side seams; 1 bottom perimeter seam | 2 vertical side seams; continuous bottom-to-side sheet | 4 vertical side seams; 4 bottom perimeter seams |
| Fine Powder Containment | Optimal; minimal seam perforations mean lowest risk of powder weeping | Moderate; requires sift-proofing along the 2 side seams | Complex; requires full sift-proofing along all 4 vertical seams |
| Natural Filling Shape | Expands into a rounded cylinder unless paired with internal liners | Expands into a semi-square profile with moderate bulge | Holds a rigid square footprint with minimal bulging |
| Labor & Price Index | Lowest labor input; most economical per unit | Moderate labor input; balanced price-to-strength ratio | Highest labor input; premium cost due to extensive sewing |
Primary Applications of Tubular Super Sacks Across Industries
The seamless construction of a circular super sack makes it ideal for industries handling fine powders, granular chemicals, and bulk commodities:
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Chemicals & Petrochemicals: Shipping fine powders (titanium dioxide, carbon black, resin pellets) where preventing dust weeping through needle holes is critical. Configured with coated fabric or internal PE liners.
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Food & Pharmaceutical Processing: Transporting starches, flour, refined sugar, and powdered ingredients. Requires manufacture in BRCGS/ISO 22000 certified cleanrooms using 100% virgin PP resin.
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Agricultural Commodity Freight: Exporting grains, seeds, coffee beans, and animal feed. Uses uncoated, breathable tubular fabric to allow airflow and prevent moisture buildup.
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Mining & Mineral Aggregates: Handling fine sand, lime, cement, and crushed minerals where cost-efficiency and high tear resistance are required.
FAQ About Circular FIBC Bags
How Much Weight Can Circular Jumbo Bags Hold?
Circular jumbo bags can typically hold between 500 kg to 2,000 kg (1,100 lbs to 4,400 lbs), depending on the specifications and design. It is essential to choose the right bag based on the weight and type of material being transported to ensure safety and efficiency.
Does a circular jumbo bag bulge or round out when filled?
Naturally, a tubular bag expands into a rounded cylindrical shape when filled due to the seamless body weave. If your warehouse or shipping containers require a square footprint to prevent wasted space, EPP Vietnam can customize your circular bags with internal baffles (Q-bag design) or form-fit liners.
Which lifting loop style is best for a Tubular Jumbo Bag?
Standard tubular jumbo bags utilize corner loops sewn directly onto the side fabric. However, if you use automated filling stations or single-operator forklifts, cross-corner loops can be specified so the loops remain open and standing upright automatically.
How Are Circular Bulk Bags Unloaded?
Unloading a circular FIBC bag can be done through a spout or by opening the bottom if the bag is designed for that purpose. Ensure that the bag is securely positioned and that the area is clear of obstacles to control the flow of materials during unloading.
How do sift-proof seams work on a tubular FIBC bulk bag?
Because a tubular jumbo bag has no vertical side seams, sift-proofing (dust-proofing) is only required along the top rim and bottom perimeter joints. Soft felt cords or polypropylene filler cords are sewn along these seams to block needle micro-perforations, preventing fine powders from leaking.
Conclusion
In conclusion, circular FIBC bag is a versatile and efficient solution for bulk material handling across various industries. Their seamless design, strength, and cost-effectiveness make them an ideal choice for businesses looking to optimize their operations while maintaining safety and quality.
For detailed consultation and quotations tailored to your specific needs, contact EPP Vietnam today. We offer a wide range of FIBC bags, PP woven bags, agricultural films, and weed mats with stable quality, competitive prices, and professional service. Let us help you enhance your material handling and operational efficiency.
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