When you look at the full picture — cost, quality, logistics, and sustainability — the comparison between Vinotanks and ISO tanks is far less close than it appears.
For wine producers and exporters shipping in volume, the choice of bulk transport container is one of the most consequential decisions in the supply chain. Two options dominate the conversation: the ISO tank and the flexitank — and specifically, for wine, the Vinotank.
On the surface, both get the job done. But when you look at the full picture — cost, quality, logistics, and sustainability — the comparison is far less close than it appears.
The Vinotank is a purpose-built flexitank engineered specifically for wine and beverage transport. Unlike a standard flexitank, it incorporates an aluminium barrier layer that minimises oxygen migration — the primary enemy of wine quality during transit. It fits inside a standard 20-foot container and can carry up to 24,000 litres per shipment.
Sun Flexitanks has been manufacturing and supplying Vinotanks for over 20 years, earning a reputation as one of the most trusted names in bulk wine logistics across Europe, South America, Africa, and Oceania.
A 20-foot container filled with 75cl bottles carries approximately 9,900 litres of wine. The same container fitted with a single Vinotank carries up to 24,000 litres — more than double the volume, at the same freight cost.
Compared to ISO tanks, the Vinotank also holds its own. ISO tanks typically carry between 20,000 and 24,000 litres, but at a significantly higher cost — both in terms of the tank itself and the logistics surrounding it.
ISO tanks are reusable, which sounds cost-effective — until you account for what reusability actually involves. After every use, an ISO tank must be cleaned and inspected to food-grade standards, recertified, transported back to origin or to a depot, and stored until the next shipment. For wine specifically, residual cleaning agents or cross-contamination risk is a real concern.
All of that has a cost. Cleaning alone can run into hundreds of dollars per cycle. Add depot fees, return freight, and inspection costs, and the "reusable" tank quickly becomes the more expensive option — especially for smaller or mid-volume exporters who don't have the logistics infrastructure to manage it efficiently.
Wine is one of the most quality-sensitive bulk liquid cargoes in the world. The Vinotank's aluminium barrier layer provides a genuine technological advantage — actively preventing oxygen transmission and odour migration throughout transit. Combined with the option to use temperature-controlled reefer containers, Vinotanks offer a level of product protection that is difficult to match at the same price point.
ISO tanks generate ongoing maintenance and transport emissions with every return journey. Vinotanks are single-use and fully recyclable, generating 90% less packaging waste than drums and significantly reducing the carbon footprint of each shipment.
For bulk wine exporters, the Vinotank delivers a compelling combination of lower cost, higher payload, quality protection, and simpler logistics — backed by over 20 years of Sun Flexitanks expertise and a global network spanning the world's major wine trade lanes. ISO tanks have their place. But for the majority of bulk wine shipments, the Vinotank is simply the smarter choice.
Talk to the Sun Flexitanks team about the right solution for your cargo.