Why Are More Companies Switching To Flexitanks? A Complete Guide To Bulk Liquid Transportation

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.

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

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.