Leveraging years of expertise in flexitank research, development, and manufacturing, Uni Flexitank offers six specialized flexitank solutions designed around cargo characteristics, temperature requirements, and transportation modes. Combined with both 20-ft and 40-ft container options, our solutions meet the global logistics needs of a wide range of non-hazardous bulk liquids, including palm oil, edible oils, fruit juices, and chemical raw materials, providing the perfect fit for diverse transportation scenarios.

Six Specialized Flexitank Solutions

Food-Grade Flexitank

Manufactured with FDA- and EU-compliant food-contact materials, the Food-Grade Flexitank features multi-layer hygienic PE films that prevent harmful substance migration and effectively isolate cargo from external contaminants. From filling to unloading, product quality and food safety are protected throughout the transportation process.

Suitable Products: Concentrated fruit juices, wine, edible oils, soy sauce, rice wine, mineral water, syrups, food additives, and other food-grade liquids.

Oxygen-Barrier Flexitank

Featuring an EVOH high-barrier oxygen-resistant layer, this flexitank significantly reduces oxygen permeability, helping prevent oil oxidation, juice fermentation, and product deterioration. It is specifically designed for oxygen-sensitive cargo, preserving original flavor, quality, and physicochemical properties during long-distance transportation.

Suitable Products: Premium fruit juices, wines, food additives, and other high-value oxygen-sensitive liquids, including selected specialty chemicals.

Low-Temperature Flexitank

Specially engineered for cold-climate and winter transportation, the Low-Temperature Flexitank utilizes advanced low-temperature PE materials to maintain flexibility and impact resistance even under harsh conditions. It is ideal for long-distance land transportation in high-latitude regions and low-temperature ocean routes, ensuring stable storage and transportation performance.

Suitable Products: Glycerin, ethylene glycol, antifreeze, and other liquid chemicals transported under low-temperature conditions.

High-Temperature Flexitank

Constructed with heat-resistant functional films and multi-layer co-extrusion technology, the High-Temperature Flexitank is suitable for medium- and high-temperature liquid filling operations. It supports hot-filling without the need for pre-cooling, improving loading efficiency and simplifying logistics operations. After filling, the cargo can be transported directly following a short settling period.

Suitable Products: Liquid asphalt, hot-melt adhesives, liquid paraffin, waterproofing materials, and various industrial oils requiring high-temperature filling.

Reefer Flexitank

Designed specifically for refrigerated containers, the Reefer Flexitank works seamlessly with the superior insulation and temperature-control capabilities of reefer containers. It helps maintain a stable low-temperature environment, preserving product freshness while minimizing risks associated with freezing damage or temperature fluctuations.

Suitable Products: Concentrated fruit juices, milk, wine, edible oils, and other liquid products requiring temperature-controlled transportation.

Truck Flexitank

Designed for high-sided trucks and flatbed trailers, the Truck Flexitank enables bulk liquid transportation without the need for containers. It provides a flexible and cost-effective solution for domestic short-haul transportation and inland distribution. Customizable according to truck dimensions and customer requirements, it supports efficient bulk liquid logistics across a wide range of applications.

Suitable Products: Base oils, molasses, edible oils, plasticizers, industrial lubricants, and other non-hazardous liquids requiring large-volume road transportation.

20-ft & 40-ft Container Solutions

Standard 20-ft flexitanks offer loading capacities ranging from 14,000L to 26,000L, making them the preferred solution for bulk edible oil exports and many other liquid commodities.

To address the current global shortage of 20-ft containers and increasing booking challenges, Uni Flexitank also provides customized 40-ft flexitank solutions. These solutions help customers overcome container shortages, ease vessel space constraints, and optimize overall ocean freight costs.

Tailored Solutions for Every Transportation Scenario

From food products and edible oils to industrial chemicals, from ambient transportation to temperature-controlled logistics, and from ocean shipping to inland distribution, Uni Flexitank provides customized solutions tailored to specific cargo and transportation requirements.

As a single-use packaging solution, flexitanks eliminate the need for tank cleaning and empty container returns, offering lower overall logistics costs than traditional tank containers and drum packaging. Uni Flexitank is committed to delivering safe, efficient, and cost-effective bulk liquid transportation solutions for global liquid supply chains.

Polyester polyols are one of the core raw materials in the polyurethane industry. Produced through the polycondensation of dibasic acids and diols, their molecular backbone contains highly polar ester groups. This unique structure provides excellent mechanical strength, abrasion resistance, oil and solvent resistance, as well as outstanding adhesion properties. As a result, polyester polyols are widely used in polyurethane elastomers, rigid foams, synthetic leather, adhesives, coatings, and inks.

As the global polyurethane market continues to expand, demand for the cross-border bulk transportation of polyester polyols is growing rapidly. Traditional packaging methods such as drums and IBCs often involve high packaging costs, low loading efficiency, and complicated empty-container return logistics. Flexitanks, with their large capacity, single-use design, and excellent sealing performance, have become an ideal and cost-effective bulk transportation solution for polyester polyols.

Uni Flexitank: Designed for Polyester Polyol Transportation

Polyester polyols are classified as non-hazardous liquids and are well suited for flexitank transportation. However, moisture protection, temperature control, and sealing performance are critical during transit. Uni Flexitanks are specifically designed to meet these requirements.

l  Excellent Moisture Protection and Sealing Performance: Polyester polyols are highly hygroscopic, and excessive moisture can negatively affect the quality of downstream polyurethane products. Uni Flexitanks are manufactured with food-grade multi-layer PE films and advanced heat-sealing technology, effectively isolating the cargo from external moisture and preventing contamination during transportation.

l  Suitable for Temperature-Controlled Transportation: Polyester polyols may become cloudy or crystallize at low temperatures. Storage and transportation temperatures are generally recommended to remain below 50°C. Uni Flexitanks can be installed in standard 20-ft containers and can be used together with flexitank heating pads to ensure smooth unloading during winter conditions or in high-latitude regions.

l  Higher Payload, Lower Logistics Costs: A single 20-ft flexitank can transport up to 24,000 liters of polyester polyols, providing more than 30% greater capacity compared with drums. As a single-use solution, flexitanks eliminate cleaning requirements and empty package returns, reducing overall logistics costs by 30%–50%, making them particularly suitable for large-volume export shipments.

l  Reliable Quality Protection: Uni Flexitanks undergo rigorous testing and offer excellent impact and puncture resistance. Manufactured to food-grade safety standards, they help ensure that polyester polyols remain uncontaminated during long-distance ocean transportation, meeting the strict purity requirements of high-end polyurethane applications.

Choose Uni Flexitank for a safer, more efficient, and environmentally friendly bulk liquid transportation solution. Make your polyester polyol logistics more cost-effective, sustainable, and reliable.

With the continuous expansion of global wine trade, the model of “bulk ocean transport and bottling at destination” is rapidly becoming the industry standard. Major wine-producing regions such as France, Spain, Chile, and Australia are increasingly adopting this efficient logistics solution. In this transformation, flexitanks are reshaping global wine transportation with superior loading efficiency, cost advantages, and quality assurance.

As a professional manufacturer with years of experience in flexible liquid packaging, Uni Flexitank provides an innovative solution for cross-border wine transportation. Compared with traditional methods, flexitanks offer significant advantages:

Higher loading capacity, significantly reducing unit freight cost
Under traditional bottled transport, a 20-ft container carries about 9,000 liters of wine. With a flexitank, the same container can load up to 24,000 liters—an increase of over 160%. This greatly reduces cost per liter and enhances market competitiveness.

Superior protection to preserve wine quality
Wine transportation requires strict protection against oxidation and contamination. Uni flexitanks use food-grade multi-layer films with excellent oxygen barrier, light resistance, and high sealing performance, ensuring product integrity. Advanced anti-leak valve systems further protect the cargo during long-distance shipping.

Efficient loading & unloading, reducing loss and labor cost
Pump-based loading and unloading, enabling rapid 20-minute operations with only 1–2 operators required. In contrast, traditional bottled transport demands intensive manual handling and mechanical equipment, with a higher risk of breakage. The flexible packaging design also ensures minimal product loss, saving clients substantial cargo costs.

Flexible compatibility for multimodal transport
From wineries to ports, rail, and road transport, flexitanks integrate seamlessly without repackaging. Suitable for both small trial shipments and large-volume distribution.

Uni Flexitank not only helps reduce costs and improve efficiency, but also supports sustainability with recyclable materials, contributing to greener logistics.

We adhere to the principle that “Quality is the life of Uni Flexitank” and strive to provide safe, reliable, and environmentally friendly liquid transport packaging solutions.

Choose Uni Flexitank to ensure every drop of wine travels efficiently, safely, and cost-effectively from winery to table.

Rich in flavor substances, peanut oil is prone to oxidation, flavor loss and contamination during storage and transportation. Traditional barrel-type storage and transportation have high losses and costs, which impair its mellow flavor and quality.

The specialized flexitank for peanut oil is tailor-made to match its storage and transportation characteristics, accurately solves pain points, fully guards the original mellow flavor and purity of peanut oil, and meets the needs of efficient storage and transportation for grain and oil enterprises.

Core Advantages

1. Food-grade Sanitary Protection: Food-grade PE raw materials, odorless and non-migratory; aseptic production, multi-dimensional cleanliness testing, ready for direct loading with no residues.

2. Freshness and Flavor Locking, Anti-oxidation: Multi-layer composite sealing, isolating air and moisture, slowing down oxidative rancidity, and firmly retaining the original mellow flavor of peanut oil.

3. High Efficiency and Cost Reduction: Adapted for 20-foot containers, volume 22-24m³, single loading capacity 20-22 tons; packaging cost is only 20% of steel barrels, saving over 30% of total storage and transportation costs.

4. Convenient Adaptation: Paving can be completed by 1-2 people in 30 minutes, large-diameter valve, filling and unloading finished within 1 hour; compatible with road-rail-sea multimodal transportation, loss rate ≤ 0.1%.

Quality Assurance

Multi-layer seamless welding, outer bag made of high-strength PP woven cloth, impact-resistant and leak-proof; with a unique traceability code; equipped with product liability insurance and full-process tracking services.

Application Scenarios

Long-distance transportation, bulk storage and inter-enterprise turnover and distribution of crude peanut oil and refined peanut oil.

Choose the specialized flexitank for peanut oil to enjoy clean, efficient and economical storage and transportation, and guard the original mellow flavor and high quality of every drop of peanut oil!

As a commonly used edible oil, soybean oil is prone to oxidative rancidity and contamination during storage and transportation. Traditional barrel-type storage and transportation entail high costs, heavy losses and low efficiency, which directly impair oil quality and corporate benefits.

The specialized flexitank for soybean oil is tailor-made to match the storage and transportation characteristics of edible oil. It precisely addresses industry pain points and safeguards the purity and mellow flavor of soybean oil throughout the process, making it an ideal choice for grain and oil enterprises pursuing efficient storage and transportation.

Core Advantages, Meeting Essential Storage & Transportation Needs
1.Food-grade Sanitary Protection: Adopts food-grade PE raw materials, odorless and non-migratory, in compliance with GB 4806 food contact standards. Produced via aseptic process and subject to multi-dimensional cleanliness testing, it is residue-free and ready for direct loading, eliminating contamination risks.
2.Freshness Lock & Anti-oxidation: Multi-layer composite sealing structure isolates air and moisture, effectively slowing down oxidative rancidity of soybean oil and preserving its original mellow flavor and nutrients.
3.High Efficiency & Cost Reduction: Adapted for 20-foot containers with a volume of 22-24m³ and a single loading capacity of 20-22 tons, increasing loading volume by 35% compared with traditional barrel-type. Packaging cost is only 20% of steel barrels, with no empty barrel return or cleaning fees, saving over 30% of total storage and transportation costs.
4.Convenient & Versatile: Paving can be completed by 1-2 people in 30 minutes; equipped with large-diameter special valves, filling and unloading can be finished within 1 hour. Compatible with road, railway and sea multimodal transportation, enabling door-to-door direct delivery with a loss rate of ≤0.1%.

Quality Assurance, Total Peace of Mind
Adopts multi-layer seamless welding technology; the outer bag is made of high-strength PP woven cloth, impact-resistant, break-proof and leak-proof. Each batch passes 10 special tests including seal performance and temperature resistance, with a unique traceability code. Product liability insurance is provided, and a professional team offers full-process tracking services.

Application Scenarios
Long-distance transportation, bulk storage and inter-enterprise turnover distribution of various soybean oils such as crude soybean oil and refined soybean oil.
Choosing the specialized flexitank for soybean oil means embracing a clean, efficient and economical storage and transportation solution. It helps grain and oil enterprises break through supply chain bottlenecks and safeguard the superior quality of every drop of soybean oil.

Syrups (fructose syrup, glucose syrup, malt syrup, etc.) are characterized by high viscosity, easy crystallization, contamination susceptibility and high-temperature sensitivity. Traditional storage and transportation are prone to problems such as caking, residue and high losses. The specialized flexitank for syrup is tailor-made to accurately solve industry pain points and fully guard the purity and fluidity of syrup throughout the process.

I. Core Advantages, Adapting to Syrup Storage and Transportation Needs

1. Anti-Crystallization and Thermal Insulation, Ensuring Fluidity

- Heating pad optional, with precise temperature control to prevent low-temperature crystallization during unloading

2. Clean and Anti-Contamination, Guarding Purity

- Food-grade special PE raw materials, odorless, no migration, complying with food contact standards

- Aseptic production, multi-dimensional cleanliness testing before delivery, residue-free and ready for direct loading

3. Efficient Loading, Significantly Reducing Costs

- 20-foot container compatible model, volume 20-24m³, single loading capacity 19-22 tons

- Packaging cost is only 20% of steel barrels, no empty barrel return or cleaning fees, saving over 30% of total costs

4. Convenient Operation, Adapting to Multi-Scenarios

- Large-diameter special valve, combined with heating assistance, to quickly complete filling/unloading

- Paving can be completed by 2 people in 30 minutes, compatible with road-rail-sea multimodal transportation, "door-to-door" direct delivery

II. Quality Assurance, Peace of Mind Throughout

- Multi-layer seamless welding process, outer bag made of high-strength PP woven cloth, impact-resistant and leak-proof

- Each batch passes 10 special tests including sealing performance and temperature resistance, with a unique traceability code

- Equipped with product liability insurance, professional team tracks the whole process to solve worries about storage and transportation

III. Application Scenarios

Long-distance transportation and bulk storage of various syrups such as fructose syrup, glucose syrup, malt syrup and high-fructose corn syrup

Choosing a specialized flexitank for syrup means choosing a stable, efficient and clean storage and transportation solution. It helps food and beverage enterprises break through storage and transportation bottlenecks and guard the high quality of every batch of syrup!