The ideal choice for non-hazardous chemical and food-grade products — the Flexitank delivers higher payload, lower cost, and full regulatory compliance in a single-use, recyclable format.
Every Sun Flexitank is manufactured to stringent international standards across both structural layers — inner co-extruded polyethylene and outer woven polypropylene.
| Dimension | Parameter | Unit | Test Method |
|---|---|---|---|
| Thickness | 125/ply | Micron | — |
| No. of Layers | 4 | Ply | — |
| Total Weight | 30 | Kg | — |
| Tensile Strength (TD) | 30 | MPa | ASTM D88 |
| Tensile Strength (MD) | 35 | MPa | ASTM D88 |
| Elongation at Break (TD) | 550 | % | ASTM D1709 |
| Elongation at Break (MD) | 650 | % | ASTM D1709 |
| Dart Drop | 1400 | GR | ASTM D1709 |
| Min. Temperature | −25 | °C | — |
| Max. Temperature | 85 | °C | — |
The inner layers consist of 4 sleeves of tubular, co-extruded polyethylene — the primary containment barrier for bulk liquid cargo. Each sleeve is manufactured to tight tolerances ensuring consistent wall strength and puncture resistance throughout transit.
With a maximum operating temperature of 85°C, the inner layer is suitable for a wide range of food-grade and non-hazardous chemical cargoes, including viscous liquids requiring heating during discharge.
| Dimension | Parameter | Unit | Test Method |
|---|---|---|---|
| No. of Layers | 1 | Ply | — |
| Weight | 180 | g/m² | — |
| Coating Weight | 30 | g/m² | — |
| Tensile Strength (TD) | 1800 | N/50mm | DIN 53354 |
| Tensile Strength (MD) | 1600 | N/50mm | DIN 53354 |
| Elongation at Break (TD) | 30 | % | DIN 53354 |
| Elongation at Break (MD) | 30 | % | DIN 53354 |
The outer layer is a single sleeve of continuous woven polypropylene — providing the structural strength required to withstand the pressures of a fully loaded 20ft container throughout its journey.
With tensile strength of 1,800 N/50mm (TD) and a 30 g/m² protective coating, this layer ensures the Flexitank holds its form from filling through to discharge at destination.
Sun Flexitanks support three configurations to suit your filling and discharge infrastructure — giving you full flexibility at origin and destination.
Sun Flexitanks feature built-in automatic air vent technology — a key safety and performance advantage over standard flexitanks.
Every Flexitank ships complete with a full bulkhead accessory kit — everything needed for a safe, compliant container installation.
The Vinotank meets the highest international standards for food-contact bulk liquid packaging.
Everything you need to know before your first Flexitank shipment.
