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       The Flexitank is a package that is used for the storage and transportation of non-hazardous liquid products and is intended for installation in 20ft ISO shipping containers.
       Our Flexitank is composed of 4 inner layers of food-grade Polyethylene and 1 outer layer of Tubular Woven Polypropylene fabric. The Seamless Tubular PP design removes risk of rupture lengthwise.
       We provide Flexitanks in sizes from 14cbm up to 24 cbm in order to maximize the capacity of a heavyweight
20ft container depending on the SG of the product to be carried.
       Using Flexitank will reduce packaging, storage and transportation costs by a sizeable margin. This is due to its relatively low unit cost and the convenience of positioning, speed of loading and efficient exploitation of loading weights.
       The 3-inch Butterfly valve is fixed firmly into the stainless steel Flange. This improves the safety and removes the risk of leakage from the valve when loading or discharging. The Anti-suction Valve design minimizes residue in flexitank after discharge.
       The Stainless Steel Flange design is mechanically fitted to the Flexitank, and guarantees replication of fitting when compared with welded systems.
       The specially designed bonnet provides a clean and secure containment area around the valve and is designed to ensure that any seepage or small spillages that might result from filling or discharge do not become incidents during transit.

Advantage of using flexitank 

•Very Low positioning costs

• No cleaning costs, no disposal costs

•Cost effective and considerably cheaper than tank containers, drums and IBC’S

•Can carry 40% or more cargo than drum and 50% or more than by bottles

• Deliveries are door- to- door • Quick loading compared to drums and IBCs

• Low labour for handling, filling and loading

•No need for forklift to load or unload container

•No need for intermediate bulk storage

•Available in remote areas   

•Clean and environmentally friendly

•No risk of contamination

•Low weight of Flexitank-so higher payloads possible

20 ft. Container payload 15% higher than IBCs Container payload 44% higher than drums

• No demurrage on Flexitank only on container, no return loads needed

Heating Pad
1 Used for easy crystalized liquid for rapid discharging of cargo
2.Cycle use
Heating Padis designed for:

1. Used for packaging fermented products;
2. Eliminate air inside the flexitank for maximum load;
3. Used for sample taking.
Airvent is designed for:
water reducer ect .

Installation process

1. Inspect and clean the container carefully     2. Roll out corrugated paper
3. Put flexitank inside the container                  4. Unfold flexitank
5. Place steel bar                                                6. Fix cardboard
7. Cardboard fixed                                              8. Close the left door and attach caution label
9. loading                                                            10. Finsh loading,close valve and fasten sock
11. Close right door,ready to transportation

Delivering commitment and solutions

The flexitank was first designed to be a more efficient solution to offset the drawback of other existing options. A simple comparison highlights the benefits of the flexitank.

Ocean Tanker





·                            Lowest cost

·                            Cheap sea leg but expensive door to door delivery from bulk

·                            Survey costs

·                            Not available in smaller ports without bulk facilities

·                            Require bulk facilities each end of leg

·                            Many pump transfers

·                            Storage costs and inconvenience if arrival late or early

·                            Numerous transfers increase risk of contamination to product


·                            2nd lowest cost

·                            Low weight of flexitank causes higher payloads and lower freight costs

·                            Available in remote areas

·                            Low positioning costs

·                            Easy load and discharge

·                            Foldable - significant reduction in storage cost when empty

·                            Always new, no risk of contamination




ISO Tanker


IBCs / Drums


·                            3rd lowest cost

·                            Expensive equipment - high rental costs compared with flexitank

·                            Require return load to be economic which is not always easy or possible

·                            Not always available in remote areas

·                            Slow to position

·                            Costly to clean

·                            Require a lot of space for stockpiling

·                            Inefficient cleaning can lead to contamination


·                            4th lowest cost

·                            Higher cost of packing compared with flexitank

·                            Lower payload in container, higher freight cost than flexitank

·                            Available in remote areas

·                            Require specialized equipment for effective cleaning

·                            Require forklift for loading and unloading container

·                            Takes up lots of storage space when empty or full. High storage costs.

·                            Disposal can create environmental problems

Even with the apparent benefits, the flexitank has been through years of evolution with its design.


Heavy rubber design. No longer widely available due to operating cost.


PVC Urethane design. Non food-grade.





Thin multi-layer design


Thick single layer design






Design Aspects


·                            3-5 thin wall (5 mil) PE liners

·                            Woven PP jacket

·                            Heat-sealed to light-weight plastic fittings


·                            Single thick-wall (40 mil) liner

·                            No woven outer PP jacket

·                            Heat-sealed to light-weight plastic fittings

Design Drawbacks


·                            Plastic heat-sealed fitting causes most of the problems

·                            Thin liners can be sucked up into the pump during discharge

·                            Uses wooden bulkhead


·                            Heat welded fittings causes most of the problems

·                            Thick single wall is stiff and difficult to discharge

·                            Uses wooden bulkhead

Handling Drawbacks


·                            Top load and discharge is unsafe and labour intensive

·                            Cannot be tested before shipment


·                            Operates through top loading and is therefore unsafe and difficult to operate

·                            Cannot be tested before shipment



Our flexitank has eliminated the weaknesses that are problematic to other flexitank designs shown above.

Read more about the benefits of MYF flexitanks here.


 Flexitank FAQ

1What sizes of flexitanks do S&W supply?

We supply standard 18cbm and 24cbm capacity flexitanks.

2What is the maximum loading capacity of your flexitank?

Maximum capacity is 24cbm.

3Do you have different types of flexitanks?
Yes, we have 2 models of flexitanks:

PREMIER Model with oxygen barrier, suitable for oxygen-sensitive products; ie. wine, flat beer, high-grade cooking oil, etc.

ECON Model without oxygen barrier.

4What is the highest temperature your flexitank can hold?

The LLDPE liner can take up to a maximum temperature of 82°C. However, for safety consideration, We recommends Safety Loading Temperature of 60°C and below. Should the product loading temperature fall between 60°C and 70°C, the laden flexitank must remain static for at least 8 hours after loading is completed.

5What is the advantage of bottom loading / discharge?

It is safer since the loaders do not go on top of the flexitank.

It is more user-friendly and faster in loading and discharge.

6What is the size of your valve?

It is a standard full port 3 inch cam lever ball valve.

7What is the compatible connection to your flexitank standard full port 3 inch cam lever ball valve?

Hoses ending with 3 inch female cam lever fitting will connect to our valve.

8What type of certifications do you have?

We only use USDA certified food grade LLDPE resin. We are KOSHER and HALAL certified, as well as Japan Food-Grade Certified.

9Is your company accredited with ISO9000?

Our company and the Flexitank are ISO 9001:2008 certified.

10What is the percentage of residue in your flexitank?

Less than 0.5%.

11Can your flexitank be re-used?

Our flexitank is a one-way disposable flexitank. Our insurance will not cover reuse.

12Does your company take care of the disposal of the flexitanks?

Yes, but there is a fee charged in accordance with the area concerned.

13Your competitor says that their flexitank is approved by FDA and German BGA. Does your Flexitank have similar approvals?

The facts are that the USDA does not approve flexitanks. They do approve the material the flexitanks are made from, in this case - PE. Yes, we use the same PE material approved by FDA and BGA.

14How long does it take to load the flexitank?

Normally not more than 45 minutes.

15Do you have an insurance policy in case of leaks?

Yes, we are covered under the USD1 million product liability policy.

16Can I load 16,000 liters in a 24,000 liter flexitank?

No. If it is not fully loaded, the movement from transportation causes a wave action in the liquid inside the flexitank and it can cause a tsunami-like force from within the container. Under-loading will destroy any flexitank. The guidelines for loading used by the Container Owner Association (COA) is not more or less than 500 litres of the flexitank rated capacity.

17What is the maximum pressure your flexitank can hold?

Our flexitank is a non-pressurized container and it will keep growing bigger and bigger. At about 4 psi, it will rupture.




Company Name:

Copyright:S&W International Chemical Logistics Ltd.Address:20F, Jinling International Mansion, No.85 Ouyang Road, Shanghai 200081 China 沪ICP备05039418号

Switchboard number:0061-21-65750999 Fax:0086-21-65866755 E-mail:sw@swlogistics.cc

Website: www.swlogistics.cc