Large Open-Top Flat Bottom FIBC Bags

The open-top flat bottom FIBC is a widely used basic type in the FIBC category, featuring a fully open top and a flat bottom without a discharge outlet. It combines the advantages of easy loading and stable stacking.
The main body of the bag is made of new polypropylene (PP) woven fabric, equipped with high-strength lifting slings (commonly 2-loop or 4-loop design) on the sides. The seams of the bag body are reinforced with double-needle stitching. With a standard load capacity ranging from 0.5 to 3 tons and a safety factor of 5:1 to 6:1, it is suitable for the bulk transportation and storage of various granular, blocky and powdery materials.

product details

Core Classification (By Bottom Reinforcement Structure)

According to different bottom reinforcement processes, open-top flat bottom FIBCs can be divided into three types, and the structure directly affects the load-bearing capacity and lifting stability:

Cross-bottom Reinforced Open-top Flat Bottom FIBCThe bottom is reinforced with cross-stitching technology, featuring a simple structure and low production cost. The stress points are concentrated at the cross seams. With a standard load capacity of 0.5 to 1 ton, it is suitable for light-weight conventional materials such as sand, gravel and grain particles.

Grid-bottom Reinforced Open-top Flat Bottom FIBCThe bottom is reinforced with multi-layer grid-shaped stitching. Compared with cross-bottom reinforcement, it adds horizontal and vertical stress support, resulting in stronger load-bearing capacity of 1 to 2 tons. The bag body bears force evenly during lifting without deformation easily, making it suitable for medium-weight materials such as plastic particles and chemical fertilizer raw materials.

X-bottom Reinforced Open-top Flat Bottom FIBCThe bottom is reinforced with diagonal X-shaped stitching, which disperses the stress points to the four corners of the bag body. Combined with reinforced side lifting slings, its load-bearing capacity can be increased to 2 to 3 tons with a higher safety factor. It is suitable for the lifting and transportation of heavy materials such as ore powder and metal particles.

Core Features

Easy Loading: The fully open top design allows for fast loading with forklifts or conveyor belts, greatly improving loading and unloading efficiency and being suitable for large-batch material turnover.

Stable Stacking: The flat bottom structure ensures even force distribution, enabling multi-layer stacking after being filled without easy tipping, thus maximizing the utilization of warehouse and transport vehicle space.

Flexible Customization: The size and style can be customized according to requirements, including adjusting the length, width and height of the bag body and the specification of lifting slings. Brand logos, material information, warning signs and other content can also be printed on the bag. For special scenarios, it can be upgraded to antistatic or acid-alkali resistant materials.

Main Applications

With the characteristics of simple structure and strong practicality, open-top flat bottom FIBCs are widely used in various industries:

Agricultural Products Sector: Used for loading granular grains such as wheat, corn and soybeans, as well as root and tuber crops like potatoes, sweet potatoes and onions, meeting the needs of large-scale storage and long-distance transportation.

Building Materials Sector: Suitable for packaging blocky materials such as sand, gravel, cement clinker and lightweight aggregates, adapting to lifting operations at construction sites and reducing material scattering loss.

Chemical Industry Sector: Applied to transport dry powdery or granular materials such as plastic particles, resin pellets and chemical fertilizer raw materials. The corresponding bottom reinforcement structure can be selected based on the weight of the materials.

Other Sectors: Also used for waste recycling and industrial parts storage, serving as a cost-effective and versatile packaging solution.