1. What is an Open Top & Flat Bottom FIBC?

As the name suggests, this bulk bag is defined by two core structural features:

Open Top (Full Opening)

The top features a wide, unrestricted opening, usually formed by a tubular body or a full-size top cover. It allows fast, high-volume filling using cranes, forklifts, or direct manual loading.

Flat Bottom

The base is a flat square or rectangular structure, unlike traditional discharge-spout designs. It has no dedicated bottom discharge opening, or only a minor auxiliary opening for sampling or ventilation.

2. Four Core Advantages That Solve Industry Pain Points

This design is not just for show — it is optimized for specific operational needs.

① Ultra-High Filling Efficiency, Time and Labor Saving

Traditional FIBCs with small filling spouts limit loading speed. The wide open top acts like a large-capacity pocket, supporting direct pouring from filling machines, loaders, or manual operation. Filling efficiency is greatly improved, making it ideal for high-volume production.

② Stable Stacking, Safe and Space-Saving

The flat bottom ensures outstanding stability. When filled, the bag stands firmly on the floor or pallet like a solid block. During multi-layer stacking, the flat base creates full contact with the surface above or below, preventing tilting or collapse. This greatly improves safety in storage and transportation while maximizing space utilization.

③ Minimal Residue, Complete Discharge

For high-value or contamination-sensitive materials such as premium plastic pellets, food ingredients, and pharmaceutical intermediates, traditional discharge spouts often leave material trapped in bag corners. Flat bottom FIBCs are typically discharged by cutting or untying stitches for one-time emptying, resulting in extremely low residue. This reduces waste and avoids cross-contamination.

④ Simple Structure, Cost-Effective

By eliminating complex bottom discharge components such as ropes, baffles, and special liners, the production process is simplified. With the same material and load capacity, this type of FIBC offers a more competitive price, helping businesses optimize packaging costs.

3. Ideal Application Scenarios

Open top & flat bottom FIBCs are perfectly matched to the following industries:

✅ Plastics & Chemical Industry

Plastic pellets (PP, PE, ABS, etc.), recycled resins, engineering plastics — fast filling, stable stacking, and complete discharge make this the most classic application.

✅ Mineral & Building Materials Industry

Ore, quartz sand, construction additives, powder additives and other free-flowing materials that do not require precise discharge control benefit greatly from the high-efficiency open-top design.

✅ Food & Feed Industry

Grain, feed raw materials, starch, sugar, salt, etc. Flat bottom design ensures stable stacking for long-term storage and enables clean, hygienic full discharge.

✅ Recycling & Environmental Industry

Waste textiles, plastic flakes, paper scraps and other bulky, irregular recyclables are easy to load through the wide opening, while the flat base keeps storage neat and stable.

Purchasing & Usage Tips

Confirm Discharge Method: Clarify whether you will empty the bag by lifting and pouring or cutting open on a forklift — this determines whether you need extra lifting loops or pallets.

Material & Load Capacity: Select appropriate PP fabric weight and quality based on material characteristics (corrosiveness, sharpness) and target weight. A safety factor of 5:1 or 6:1 is recommended.

Inner Liner Option: For moisture-sensitive goods, use a separate PE liner that can be removed and cut open together during discharge for better protection.

Media Contact
Company Name: Linyi Silk Road International Trade Co., Ltd.
Email: Send Email
Country: China
Website: https://www.slwovenbag.com/