Introduction: The Growing Demand for Flexible Bulk Liquid Transportation
Global supply chains are constantly evolving. Companies transporting bulk liquids across international borders are looking for solutions that improve efficiency, reduce transportation costs, and support sustainability goals.

For decades, companies have relied on traditional liquid transportation methods such as:

Steel drums — 200L containers, widely used but labor-intensive

Intermediate Bulk Containers (IBCs) — 1,000L units, common in regional distribution

ISO tanks — Reusable stainless-steel tanks, suitable for repeated shipments

While these solutions remain suitable for certain applications, many businesses are now adopting flexitanks as an alternative for transporting compatible non-hazardous bulk liquids.

What is a flexitank? A flexitank is a large, flexible liquid container installed inside a standard shipping container. It allows companies to transport thousands of liters of liquid cargo efficiently while utilizing existing container logistics networks.

Today, flexitanks are widely used for:

Edible oils

Wine

Juice concentrates

Syrups

Lubricants

Latex

Industrial liquids

Other compatible non-hazardous bulk liquids

This article explains why more companies are switching to flexitanks and how they compare with traditional liquid transportation methods.

What Is a Flexitank?
A flexitank is a flexible bladder designed to transport bulk liquids inside a standard freight container.

A typical flexitank system includes:

Multi-layer polyethylene film structure — Provides liquid containment and barrier properties

Outer protective components — Reinforces structural integrity

Valve system — Enables controlled filling and discharge

Installation accessories — Corrugated paper rolls, bulkheads, cardboard/PP board

Loading and unloading equipment — Pumps and hoses for efficient transfer

Once installed inside a suitable container, the flexitank converts the container space into a temporary bulk liquid transportation unit.

Unlike rigid tanks, flexitanks are lightweight, disposable, and designed for efficient international shipping.

flexitank manufacturer

Why Are Companies Choosing Flexitanks?
1. Higher Container Utilization
One of the main reasons companies adopt flexitanks is improved cargo utilization.

A standard 20ft container flexitank typically carries 14,000–26,000 liters.

A 40ft flexitank typically carries 8,000–28,000 liters.

Configuration

Typical Capacity

20ft Flexitank

14,000–26,000 liters

40ft Flexitank

8,000–28,000 liters

Actual capacity depends on liquid density, container specifications, and flexitank design.

Compared with multiple drums or IBC containers, flexitanks allow companies to move larger quantities of liquid using fewer handling units.

2. Reduced Logistics Costs
Flexitanks help reduce multiple cost categories:

Cost Category

How Flexitanks Help

Packaging costs

Single-use design eliminates drum purchasing and cleaning

Handling and labor

Faster loading (~1 hour vs 2–3 hours for drums)

Storage requirements

Collapsible design reduces warehouse space needs

Return logistics

No empty container return or cleaning expenses

Freight costs

Higher payload per container means fewer shipments needed

3. Improved Supply Chain Efficiency
Flexitanks integrate with existing container transportation networks. They can be transported through:

Ocean freight — Standard container shipping

Rail transportation — For cross-border and long-distance routes

Road transportation — Trailer and truck flexitank systems

This allows companies to use standard container infrastructure instead of specialized tank equipment.

4. Sustainability Advantages
Many companies are focusing on reducing environmental impact across their supply chains.

Flexitanks may contribute through:

Reduced packaging materials compared with multiple drums

Lower transportation weight

Improved container efficiency

Recyclable material options

Environmental performance depends on material selection, recycling availability, and transportation conditions.

Flexitank vs Traditional Liquid Transportation Methods
Flexitank vs Drums
Traditional drums have been widely used for liquid transportation, but they also create several challenges.

Factor

Flexitank

Drums

Packaging volume

Large bulk capacity

Many individual units

Handling

Simplified loading/unloading

More labor intensive

Loading time

~1 hour

~2 hours

Unloading time

~30 minutes

~3 hours

Manpower required

2 persons

3 persons

Storage

Less empty packaging

Requires drum management

Return logistics

Usually not required

May require handling

For suitable liquids, flexitanks can reduce packaging complexity and improve operational efficiency.

Flexitank vs IBC Containers
IBCs are commonly used for transporting liquid products, especially in regional distribution. However, flexitanks offer different advantages for international bulk shipping.

Factor

Flexitank

IBC

Capacity

Up to approximately 26,000L in 20ft container

Usually around 1,000L per unit

Container utilization

High

Lower

Return logistics

Generally not required

May require cleaning and return

Loading operations

Bulk loading

Multiple handling units

For large-volume international shipments, flexitanks can provide a more efficient option.

Flexitank vs ISO Tanks
ISO tanks are reusable stainless-steel tanks commonly used for bulk liquids. They provide advantages for certain applications but also involve additional logistics considerations.

Factor

Flexitank

ISO Tank

Initial investment

Lower equipment requirement

Higher equipment investment

Return logistics

Usually unnecessary

Required

Cleaning

No tank cleaning required

Requires cleaning

Weight

Lightweight

Heavy steel structure

Reuse

Single-use applications

Multiple-use

Companies often select between flexitanks and ISO tanks based on:

Product characteristics

Shipping frequency

Route requirements

Regulatory needs

Flexitank supplier

Common Applications of Flexitanks
Food and Beverage Industry
Food-grade flexitanks are commonly used for:

Edible oils (palm oil, rapeseed oil, soybean oil, sunflower oil)

Wine

Juice concentrates

Syrups

Food ingredients

Food applications require attention to:

Food-contact compliance (FDA 21 CFR, EU 10/2011)

Material safety (FSSC 22000, KOSHER, HALAL)

Quality control

Oxygen barrier performance

Industrial Liquid Transportation
Industrial flexitanks are used for:

Lubricants

Base oils

Latex

Resins

Industrial fluids

Different liquids require different material structures and compatibility evaluations.

Chemical Industry Applications
Some non-hazardous chemical liquids can be transported using specialized flexitank solutions.

Examples include:

Ethylene glycol

Polyols

Surfactants

Other compatible liquids

A professional manufacturer should evaluate:

Chemical compatibility

Temperature requirements

Transportation conditions

Are Flexitanks Environmentally Friendly?
Sustainability has become an important consideration for global supply chains.

Compared with some traditional packaging methods, flexitanks may offer environmental advantages through:

Reduced Material Usage
Moving bulk liquids in one flexible container can reduce the number of individual packages required.

Lower Transportation Weight
Flexitanks are lightweight compared with rigid tank systems, contributing to fuel efficiency.

Recycling Potential
Many modern flexitanks use recyclable polyethylene materials.

However, recycling programs depend on:

Local infrastructure

Collection systems

Regional regulations

When Should Companies Choose Flexitanks?
Flexitanks are suitable when:

The liquid is compatible with flexitank materials

The product is non-hazardous

International container shipping is involved

Large-volume transportation is required

Cost efficiency is important

Important: Flexitanks are not designed for dangerous goods . Always verify cargo compatibility with your supplier.
Companies should consult professional flexitank suppliers before selecting a solution.

How to Select a Flexitank Supplier
A reliable flexitank supplier should provide:

Manufacturing Capability
Look for:

Dedicated factory facilities

Production experience

Quality inspection systems

Product Knowledge
The supplier should understand:

Liquid characteristics

Temperature requirements

Viscosity

Loading conditions

Certifications
Depending on application:

FDA food-contact requirements

EU 10/2011

FSSC 22000

ISO 9001

Technical Support
Important services include:

Installation guidance

Loading recommendations

Troubleshooting support

Frequently Asked Questions
How much liquid can a flexitank carry?
A standard 20ft flexitank typically carries approximately 14,000–26,000 liters.

Capacity depends on liquid density, container specifications, and flexitank design.

Are flexitanks safer than drums or IBCs?
Safety depends on product quality, correct installation, container suitability, and proper loading procedures.

The Container Owners Association (COA) has established stringent guidelines for flexitank manufacturing, installation, and application [Source: Container Owners Association].

A professionally manufactured flexitank with appropriate installation can provide safe transportation for compatible liquids.

Can flexitanks transport food products?
Yes. Food-grade flexitanks are commonly used for:

Edible oils

Wine

Juice

Syrups

Food ingredients

The manufacturer should provide suitable food-contact compliance documentation.

Can flexitanks replace ISO tanks?
Not always.

The best solution depends on:

Product requirements

Shipping frequency

Route

Regulatory requirements

Flexitanks are often suitable for disposable bulk transportation, while ISO tanks may be preferred for repeated circulation systems.

Can flexitanks be recycled?
Yes. Many modern flexitanks use recyclable polyethylene-based materials. Leading manufacturers partner with certified recycling facilities for used flexitank collection and processing.

Recycling availability depends on local collection systems and processing infrastructure.

Conclusion: Why Flexitanks Are Becoming an Important Logistics Solution
The shift toward flexitanks reflects a broader trend in global logistics: companies are looking for transportation solutions that improve efficiency, reduce unnecessary costs, and support more sustainable supply chains.

For suitable bulk liquids, flexitanks provide advantages including:

Higher container utilization — Maximizing payload within standard containers

Reduced packaging complexity — Single system replacing multiple handling units

Flexible international transportation — Compatible with ocean, rail, and road

Lower logistics costs — Eliminating return logistics and reducing handling

As demand for efficient bulk liquid transportation continues to grow, selecting an experienced flexitank manufacturer remains essential. Companies evaluating flexitank suppliers should consider manufacturing capability, certifications, product specialization, and global technical support.

About LAF Technology
Founded in 2007, LAF Technology is a professional China-based flexitank manufacturer providing global bulk liquid transportation solutions.

The company specializes in:

Disposable flexitanks

Food-grade flexitanks

Industrial flexitanks

Reefer flexitanks

Truck/Trailer flexitanks

Railway flexitank solutions (RailFlex™)

Container liner solutions

With integrated manufacturing capabilities and global service coverage spanning five continents, LAF Technology supports companies seeking reliable, high-quality flexitank solutions worldwide.