Overview
White FIBC bags with two loops are heavy-duty containers designed for mechanized handling of bulk materials. The dual-loop configuration provides balanced load distribution during lifting, reducing stress points compared to single-loop designs. These bags typically hold 500-2,000kg and are constructed from UV-stabilized polypropylene woven fabric with optional inner liners for moisture protection. Standard dimensions range from 90x90x90cm to 110x110x110cm, with fabric densities of 150-220g/m² determining durability. The white color facilitates cleanliness inspection and is preferred for food-grade applications. Modern versions often incorporate tracking barcodes and RFID tags for supply chain management.
Product Features
The two-loop design enables safer vertical lifting via spreader bars, minimizing bag deformation during crane operations. Loops are integrally woven into the bag's superstructure with reinforced stitching, typically rated for 5-8 times the nominal payload. Anti-sway features like baffles or duffle tops improve stability during transport. Premium variants include coated fabrics (PE or PP lamination) for water resistance or conductive threads for electrostatic discharge protection. Food-grade bags use FDA-compliant materials without recycled content, while construction-grade bags may incorporate tear-resistant warp yarns for abrasive materials like sand or gravel.
Main Uses
These FIBCs are widely deployed in agriculture for bulk grains and fertilizers, where their white surface helps reflect sunlight to prevent heating. In construction, they transport sand, cement, and dry mix compounds with optional moisture barriers. Chemical manufacturers use them for powdered additives, pigments, and non-hazardous industrial materials. Specialized applications include pharmaceutical intermediates (with hermetic liners) and recycled plastics processing. The two-loop system is particularly favored in ports and warehouses where overhead cranes are prevalent, as it allows faster loading/unloading cycles compared to four-loop designs.
Culture and Development
FIBC technology originated from WWII-era military bulk packaging needs, with modern woven PP bags commercialized by European manufacturers in the 1970s. The two-loop configuration gained popularity in Asian markets during the 1990s as a compromise between four-loop safety and single-loop cost efficiency. Recent innovations include smart bags with IoT sensors for real-time weight/moisture monitoring and biodegradable PP variants for environmental compliance. The white color tradition stems from hygiene requirements in food applications, though colored stripes are increasingly added for hazard identification (e.g., blue for fertilizer, red for hazardous materials).
B2B Procurement Guide
When sourcing these FIBCs, verify the manufacturer's ISO 21898 certification and request test reports for loop tensile strength (minimum 2,500kgf for 1-ton bags). For international shipping, ensure compliance with destination country regulations - e.g., USDA approval for grain exports or REACH compliance for EU chemicals. MOQ typically starts at 500-1,000 units, with lead times of 15-30 days for custom printing. Consider FOB pricing from Chinese manufacturers (approximately $7-$15/unit for standard 1-ton bags) versus CIF rates from Indian or Middle Eastern suppliers. Always request pre-shipment samples to check stitching quality and loop alignment accuracy.
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