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Flexitank Overview

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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		Flexitank

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.


1970s Heavy rubber design. No longer widely available due to operating cost.		1980s PVC Urethane design. Non food-grade.


1990s Thin multi-layer design		2000s Thick single layer design


	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 MYF Composite Bolted Design flexitank has eliminated the weaknesses that are problematic to other flexitank designs shown above.

Read more about the benefits of MYF flexitanks here.