Flexitank[3]

Updated: 2026-09-20

Overview

Flexitanks are large, collapsible containers designed for the efficient transportation and storage of non-hazardous liquids. They are typically made from multilayer polyethylene (PE) films, ensuring strength and leak-proof performance. Flexitanks can hold between 16,000 to 24,000 liters of liquid, making them ideal for bulk shipments. These containers are a popular alternative to traditional steel drums and ISO tanks due to their lower cost, reduced weight, and ease of disposal after use. They are widely used in industries such as food and beverage, chemicals, and pharmaceuticals for transporting products like edible oils, juices, and liquid fertilizers.

Structure and Working Principle

A flexitank consists of multiple layers of polyethylene film, often reinforced with nylon or polyester for added durability. The inner layer is food-grade and chemically resistant, ensuring safe storage of liquids. The outer layers provide structural integrity and protection against punctures. During use, the empty flexitank is placed inside a standard 20-foot shipping container and filled with the liquid cargo. The container's rigid structure supports the flexitank, preventing movement during transit. After unloading, the flexitank is disposed of, eliminating cleaning costs and contamination risks.

Key Features

Flexitanks offer several advantages over traditional liquid transport methods. They are lightweight, reducing shipping costs compared to steel drums or ISO tanks. Their single-use design eliminates cleaning and maintenance expenses, saving time and resources. Flexitanks also maximize container space utilization, allowing for higher cargo volumes per shipment. They are compatible with a wide range of non-hazardous liquids, including food-grade and industrial products. However, they are not suitable for hazardous materials or liquids with high viscosity or temperature extremes.

Application Areas

Flexitanks are widely used in industries requiring bulk liquid transportation. The food and beverage industry uses them for edible oils, juices, wines, and syrups. Chemical manufacturers transport non-hazardous liquids like lubricants, surfactants, and liquid fertilizers. Pharmaceutical companies use flexitanks for raw materials and intermediate products. They are also employed in the cosmetics industry for ingredients like glycerin and emulsifiers. The agricultural sector utilizes them for liquid fertilizers and pesticides, where applicable.

Maintenance and Precautions

Since flexitanks are single-use, maintenance is minimal. However, proper handling during loading and unloading is crucial to prevent leaks or ruptures. The container floor must be clean and free of sharp objects that could puncture the flexitank. It's essential to ensure the liquid being transported is compatible with the flexitank material. Overfilling should be avoided to prevent stress on the seams. Temperature extremes during transit can affect performance, so climate-controlled containers may be necessary for certain products.

B2B Procurement Guide

When purchasing flexitanks, consider the specific requirements of your liquid cargo. Verify the material compatibility, especially for food-grade or chemically aggressive liquids. Check the manufacturer's certifications, such as FDA approval for food contact. Compare lead times and minimum order quantities, as these vary by supplier. Evaluate the supplier's track record in your industry and their ability to provide technical support. For reference, prices typically range from $300 to $800 per unit, depending on capacity and specifications.