When liquid storage and transportation face multiple challenges such as high costs, low efficiency, and safety hazards, a new type of packaging container that integrates technology and practicality is quietly rewriting industry rules — this is the container flexitank. As a revolutionary solution for the storage and transportation of non-hazardous fluid substances, it is based on food-grade materials, centered on high efficiency and economy, and supported by safety and environmental protection. It has become a preferred partner in fields such as chemical industry, food, agriculture, and logistics, completely breaking the limitations of traditional packaging.

I. Materials and Craftsmanship: The Core Guarantee for Safe Storage and Transportation

The safety gene of flexitanks is deeply rooted in every layer of material and every process. The bag body is made of composite materials of imported polyethylene (PE) and polypropylene (PP). From the storage of raw materials to the delivery of finished products, each batch of products must undergo testing of more than ten physical indicators, including tensile strength, elongation at break, and dart impact strength. It has also passed multiple authoritative certifications such as the FSSC 22000 Food Safety Certification and the ISTA 3E International Transportation Safety Test.

For food-grade application scenarios, flexitanks use food-grade special films, which undergo strict disinfection and cleaning, and pass comprehensive tests such as microbial content and plasticizer migration. This eliminates secondary pollution from the source and ensures that products such as fruit juice, milk, and cooking oil maintain their original quality throughout the entire process. Each set of flexitanks has a unique production number, enabling full traceability of material sources and production information. Additionally, it is supported by product liability insurance to provide an extra layer of protection for the safety of storage and transportation.

II. Core Advantages: An Efficiency Revolution That Subverts Tradition

The rise of flexitanks stems from their comprehensive innovation of traditional storage and transportation models, achieving multi-dimensional breakthroughs in cost, efficiency, and flexibility.

(I) Cost Control: Every Investment Delivers More Than Its Value

Compared with traditional containers such as steel drums, IBC drums, and tank containers, the cost advantage of flexitanks is remarkable. Taking a 20-foot container as the carrier, a single set of flexitank can have a volume of 15-26 m³. This represents a 43.7% increase in total capacity compared to 80 200-liter oil drums, while the packaging cost is only 19.2% of that of oil drums. In the transportation link, flexitanks do not require empty container return fees, and also save the cleaning and maintenance costs of tank containers, which often amount to thousands of yuan. During the storage phase, unused flexitanks can be completely folded for storage, significantly reducing the cost of site occupation compared to traditional rigid containers.

(II) Efficiency Improvement: Saving Time and Effort Throughout the Entire Process

The operational convenience of flexitanks has redefined the rhythm of liquid storage and transportation. The laying process can be completed by 2 people in 20 minutes. The efficient operation of filling in 1 hour and unloading in 30 minutes saves more than 50% of working hours compared to IBC drums. No auxiliary tools such as forklifts or cleaning equipment are needed; loading and unloading can be achieved only through the connection of valves and pipelines, greatly reducing reliance on labor. More notably, flexitanks are perfectly compatible with multimodal transportation by road, rail, and sea. Relying on the globally distributed container resources, they realize "door-to-door" one-stop transportation without the need for transshipment and repackaging, shortening the transportation cycle by more than 30%. For high-temperature solidifying liquids such as asphalt, the supporting steam heating pads and electric heating pads can quickly achieve solid-liquid conversion, ensuring smooth unloading.

(III) Flexible Adaptation: A Versatile Solution Covering All Scenarios

The flexitank product line has formed a complete product matrix to accurately meet the needs of different scenarios:

Food-grade flexitanks protect the freshness of fruit juice and milk;

Oil flexitanks are suitable for the storage and transportation of lubricating oil and hydraulic oil;

High-temperature flexitanks can withstand temperatures up to 120°C and are specially designed for chemical products such as asphalt;

Vehicle-mounted flexitanks can quickly convert ordinary trucks into specialized transportation tools, enabling flexible switching between short-distance and long-distance transportation;

Wine-specific flexitanks ensure the stable flavor of wine through a low oxygen permeability design.

III. Environmental Protection and Applications: The Inevitable Choice in the Green Era

Guided by the "dual carbon" goals, the environmental protection attribute of flexitanks has become a new advantage in the industry. After use, they can be recycled or buried in compliance with regulations. The inner and outer bags are easy to separate, avoiding the recycling problems of traditional packaging.

Today, flexitanks have been widely applied in multiple fields:

In the agricultural field, PVC flexitanks provide large-capacity emergency water storage for arid areas, and the UV-resistant materials ensure stable long-term outdoor use;

In the chemical industry, non-hazardous chemical flexitanks realize the safe transportation of products such as cleaning agents and polyethers;

In the food industry, from cooking oil to wine, flexitanks protect the quality and safety of products throughout the entire process.

From workshops to ports, from short-distance transshipment to global multimodal transportation, flexitanks, with their core values of "safety + efficiency + environmental protection", are reshaping the industry ecosystem of liquid storage and transportation. Choosing flexitanks is not only choosing a type of packaging container, but also choosing an operation model that reduces costs and increases efficiency, and a green and sustainable development concept. Whether you are a food manufacturer, a chemical enterprise, or a logistics service provider, flexitanks will become your capable partner in breaking through the bottlenecks of storage and transportation and enhancing core competitiveness.

In today's health-conscious world, Sunflower Oil has become a widely popular cooking oil globally due to its richness in unsaturated fatty acids, vitamin E, and its clear, bright quality. However, ensuring that this delicate oil maintains its natural quality from the production site to the processing plant presents a significant challenge. Traditional transportation methods using iron drums or ISO tank containers suffer from drawbacks such as high cost, susceptibility to contamination, and residue issues.

Flexitank transportation provides an innovative answer, developed precisely through a profound understanding of the properties of Sunflower Oil.

I. In-Depth Insight: Core Properties of Sunflower Oil and Transportation Risks

High Unsaturated Fatty Acid Content: Sunflower Oil, especially the high-oleic type, is rich in unsaturated fatty acids. While beneficial for health, these components are chemically relatively active and prone to oxidation upon contact with oxygen, leading to rancidity and off-flavors. Transportation Key: Isolate from oxygen to maintain quality stability.

Sensitivity to Light and Heat: Natural antioxidants like vitamin E can gradually degrade under light and sustained high temperatures, accelerating oil oxidation. Transportation Key: Protect from light, control temperature to prevent quality deterioration.

Extremely High Purity and Flavor Requirements: The selling points of Sunflower Oil lie in its mild taste and pure color. Any residual contamination from previous cargo, even trace amounts of odor, can ruin an entire batch of oil. Transportation Key: Ensure absolute cleanliness and dedicated use of the transport container.

Relatively Low Solidification Point: The solidification point of Sunflower Oil is typically around minus ten-plus degrees Celsius, remaining liquid at常规 transportation temperatures. Transportation Key: No special heating required, but prevent extreme low temperatures causing partial solidification.

II. Precise Matching: How Flexitanks Protect Every Drop of Sunflower Oil's Purity

Based on the above properties, flexitank transportation demonstrates its irreplaceable advantages:

Addressing the "Anti-Oxidation" Need: Superior Barrier Performance

Modern food-grade flexitanks use multi-layer co-extruded composite materials with built-in high-barrier layers, effectively blocking oxygen and moisture. After filling, air is expelled from the bag through a one-way valve, creating a near-vacuum "dormant" environment that maximizes the delay of the oxidation process and ensures the natural freshness of the Sunflower Oil.

Addressing the "Cost and Efficiency" Need: Significant Economical Efficiency

A flexitank inside a standard 20-foot container can hold 10,000 to 24,000 liters, far exceeding the capacity of drums, and also avoids the cleaning and logistics costs associated with returning empty drums. This means:

Transportation costs can be reduced by up to 30% or more.

"Door-to-door" service reduces intermediate loading and unloading links, lowering the risk of damage and contamination.

Maximizes container space utilization, enhancing single-shipment benefits.

Operational Simplicity and Flexibility

Flexitanks can adapt to various standard containers (including dry cargo containers), without the need for expensive specialized tank bodies. Professional filling and emptying systems ensure smooth processes and extremely low loss.

Conclusion:

For Sunflower Oil traders, choosing flexitanks is no longer merely selecting a mode of transport; it is choosing a solemn commitment to product quality and a modern supply chain management wisdom. It perfectly aligns with the physical and chemical characteristics of Sunflower Oil, safeguarding the oil's purity and freshness all the way to its destination in a more economical, safer, and more professional manner.

In the global industrial and commercial chain, glycerin is an indispensable raw material for the cosmetics, pharmaceutical, food, and even chemical industries. Its stable, economical, and safe transportation is crucial for ensuring the smooth operation of your supply chain. However, are you still plagued by the numerous shortcomings of traditional transport methods (such as steel drums, ISO tanks)?

Soaring costs? The procurement and cleaning recovery costs of the steel drums themselves, along with their significant dead weight and space wastage, continuously eat into your profits.

Cumbersome operations? Loading, unloading, stacking, and dismantling steel drums consume vast amounts of manpower and time, resulting in low efficiency that severely impacts port turnaround.

Quality risks? The risks of residue, contamination, and oxidation from multiple drum valves and welds constantly threaten the high-value quality of your glycerin.

Environmental pressures? The wastewater and waste residues generated from cleaning steel drums make it difficult to keep pace with increasingly stringent environmental regulations.

It's time for a change. A new solution has arrived: Flexitank transport.

Why are Flexitanks a Game-Changing Choice for Glycerin Transport?

Significantly Reduced Unit Costs: The transport volume per shipment is larger, leading to a significant reduction in unit cost.

Reduced Labor and Storage: Loading and unloading are convenient, requiring only simple pumping in and out, which drastically reduces labor and time costs.

Dedicated food-grade pipes and valves eliminate the risk of cross-contamination inherent in traditional methods due to repeated valve operations and container reuse, perfectly preserving the purity, color, and compositional stability of glycerin.

Rapid Turnaround: Filling and emptying speeds far exceed those of drum handling, potentially saving you up to 70% in port operation time, accelerating vessel and container turnaround, and making your supply chain more resilient.

Times are advancing, technology is innovating. Clinging to inefficient, high-cost traditional transport methods is akin to voluntarily surrendering profit and competitive advantage in an intense market.

Choosing professional flexitank transport is not merely selecting a type of packaging; it is choosing a smarter, more economical, and safer supply chain management model.

Let our expert solutions safeguard your glycerin trade, helping you move steadily towards success and win the future!

Contact us to obtain a free analysis report on a customized glycerin transport solution design.

When chemicals, foodstuffs, fruit juices, oils, and other liquids safely cross mountains and seas, arriving at their destination intact, you might not realize that what guards this safety is far more than just a simple "plastic bag." It is an industrial-grade protection system—a flexitank—integrating materials science, precision engineering, and utmost responsibility.

At Uni Flexitank, we firmly believe that superior flexitank quality is "manufactured," not just "inspected." And the core of manufacturing lies with people.

The Heart of a Craftsman: Every Employee is the First Gatekeeper of Quality

In our view, every worker on the production line is not merely an operator but a "creator" and the "first quality inspector" of the flexitank.

We implement a strict "Pre-job Certification" system. Before any employee handles critical processes (such as high-frequency welding, valve installation, inner film sewing), they must pass dual assessments in theory and practical operation, deeply understanding both "why it's done this way" and "the consequences of not doing so." We certify individuals one by one, stationing them only upon qualification, eliminating human error at the source.

Self-inspection: Workers conduct 100% checks on their own completed work.

Mutual inspection: The next process step acts as the customer of the previous one. This creates a beneficial cycle where "defects don't leave the station, issues don't get passed on."

Specialized inspection: Dedicated quality inspectors perform sampling and full inspections at critical points.

By combining self-inspection, mutual inspection, and specialized inspection, we construct a seamless quality monitoring network.

The Purity of Environment: A Cleanroom as the Highest Tribute to Purity

Before entering, workers must pass through an air shower and wear specialized anti-static dust-proof suits, head covers, and gloves. We manage not just the product, but even the air and dust.

5S Site Management: Seiri (Sort), Seiton (Set in order), Seiso (Shine), Seiketsu (Standardize), and Shitsuke (Sustain). This is not just a slogan on the wall but a daily habit for every worker. An orderly, spotless workshop is the fundamental physical prerequisite for producing top-tier flexitanks.

Regular Training: Weekly quality analysis meetings and periodic industry knowledge updates keep our team technically advanced and highly vigilant.

Choosing us means choosing peace of mind. Because every consignment you entrust to us deserves our complete professionalism and dedication to safeguard.

Base oil—often called the lifeblood of industrial machinery—is the core component of lubricants and greases, typically making up 67–90% of the final product’s mass. Whether refined from crude oil or produced synthetically, base oils act as the carrier for additives and directly impact the quality, performance, and longevity of lubricants.

From automotive engines and construction equipment to precision gearboxes, hydraulic systems, and wind turbines, base oil keeps industries running smoothly. Its chemical stability, viscosity consistency, and purity are crucial to protecting expensive machinery and extending service life.

Logistics Challenges: Purity and Cost Go Hand in Hand

Due to its high value and critical role, base oil must be shipped with care. Key challenges include:

● Preventing Contamination: Any foreign particles can degrade product quality and impact downstream applications.

● Maintaining Chemical Stability: Packaging must resist chemical reactions or swelling that could compromise the oil.

● Efficient Bulk Handling: Different viscosities require smooth loading and unloading without residue or product loss.

● Cost Control: With high volumes in global trade, choosing the right bulk transport method has a major impact on operational costs.

Why Flexitanks Are the Smart Choice for Base Oil

Flexitanks—food-grade, multi-layer liners fitted inside standard 20-foot containers—are revolutionizing how base oils move around the world. Here’s why:

● Higher Payload, Lower Costs

One flexitank can hold up to 24,000 liters, compared to around 16,000 liters with drums. More oil per container means fewer shipments, lower freight costs, and greater efficiency for high-volume routes.

● Maximum Product Protection

UNI flexitanks use advanced multi-layer barrier films and a durable woven outer layer to protect the oil from leaks, evaporation, or contamination. Unlike drums or tanks that require cleaning, single-use flexitanks ensure every batch stays pure.

● Seamless Loading & Discharge

Base oil’s viscosity demands smooth flow. Flexitanks are designed for easy pump connections, allowing clean, efficient loading and unloading with minimal residue—saving time and reducing operational hassle.

● No Return Logistics

With flexitanks, there’s no need to manage cleaning or return trips for empty containers, cutting waste and operational costs.

● Sustainable and Compliant

UNI flexitanks are made from recyclable materials, aligning with the industry’s push for greener supply chains and lower carbon footprints.

Unlock Greater Value in Every Drop

For producers, traders, and end-users alike, every liter of base oil is an investment in performance. UNI flexitank solutions help you protect product integrity, simplify global shipments, and reduce logistics costs—all while supporting sustainability targets. Contact us to discover how our flexitank solutions can help you deliver more value, more efficiently—one shipment at a time.

Castor oil is more than a traditional commodity — it’s the backbone of multiple modern industries, from pharmaceuticals and cosmetics to biopolymers, lubricants, and specialty chemicals. With global trade valued at over USD 1.2 billion, and demand rising steadily at 4–5% annually, castor oil is one of the fastest-growing segments in the vegetable oil market.

The Global Trade Landscape

India leads the world, accounting for over 80% of global exports. In 2023, Indian shipments exceeded USD 1 billion.

China, the United States, Germany, France, and Japan are among the largest importers, with steady demand for both crude and processed castor oil.

The market is expanding beyond traditional hubs, with growing trade activity from Europe, South America, and Southeast Asia.

Challenges remain, including price volatility, container availability, and the need to maintain purity during long-haul shipments.

Why Flexitanks Are the Smart Choice for Castor Oil

Transporting castor oil requires packaging that ensures purity, efficiency, and cost-effectiveness. Traditional drums and IBCs often fall short — driving up costs, wasting space, and increasing contamination risks.

Flexitanks provide a game-changing alternative:

1.Higher Payload: Up to 26,000 liters in a standard 20ft or 40ft container — nearly 50% more than drums or IBCs.

2.Product Integrity: Multi-layer food-grade liners and robust woven layers protect against leakage, contamination, and oxidation.

3.Lower Costs: Fewer shipments, reduced labor handling, and no return logistics.

4.Sustainability: One-time use, recyclable materials, and reduced carbon footprint compared to traditional bulk transport.

5.Global Scalability: Ideal for long-haul routes connecting India with Europe, the Americas, and Asia-Pacific.

Supporting the Future of Castor Oil Logistics

As industries worldwide accelerate their shift toward bio-based and sustainable inputs, castor oil demand will only increase. With flexitanks, producers, exporters, and importers can move larger volumes safely, reduce transport costs, and support greener supply chains.

From India’s farms to factories across the globe, flexitanks are powering the castor oil trade — making bulk liquid logistics simpler, smarter, and more sustainable.