The grammage of bulk bags (FIBC bags), usually referring to the base fabric grammage (unit: g/m²), is a core indicator for measuring the thickness and strength of the bag body. The mainstream range is 140–220 g/m², and heavy-duty types can reach 250–300 g/m².
I. Correlation Between Base Fabric Grammage and Load Capacity (Conventional PP Material)
Lightweight (140–160 g/m²)
Load capacity: 0.5–1 ton
Applications: Light powder and granular materials (e.g., grain, chemical additives)
Standard Type (165–180 g/m²)
Load capacity: 1–1.5 tons
Applications: General-purpose use (cement, sand and gravel, plastic granules), the most commonly used
Thickened Type (180–220 g/m²)
Load capacity: 1.5–2 tons
Applications: Heavier ores, metal powders, recycled materials
Heavy-Duty Type (220–300 g/m²)
Load capacity: 2–5 tons
Applications: High-strength, wear-resistant and puncture-resistant scenarios
II. Dead Weight of Bulk Bags (Whole Bag Weight)
1-ton standard bag (90×90×110cm): approx. 1.5–2.2 kg
2-ton thickened bag: approx. 2.5–3.5 kg
Factors affecting dead weight: base fabric grammage, dimensions, structure (opening/discharge spout, lifting loops, lining)
