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Explore our top-tier high-barrier thermoplastic materials engineered specifically to prevent permeation, oxidation, and chemical leakage in industrial transport.
In the modern chemical, agricultural, and food processing industries, the safe and efficient transport of bulk goods requires packaging materials that can withstand rigorous conditions while preventing contamination. EVOH (Ethylene Vinyl Alcohol) plastic has emerged as the premier choice for manufacturing high-barrier industrial liners. These liners, used extensively inside Intermediate Bulk Containers (IBCs), drums, and Flexible Intermediate Bulk Containers (FIBCs), provide an impermeable shield against gases, hydrocarbons, organic solvents, and moisture.
Traditional industrial liners made from standard low-density polyethylene (LDPE) or high-density polyethylene (HDPE) often fall short when transporting sensitive or volatile compounds. While polyethylene provides excellent moisture resistance and structural durability, its molecular structure is highly permeable to oxygen and volatile organic compounds (VOCs). This results in the oxidation of food oils, the degradation of pharmaceutical ingredients, and the escape of hazardous chemical vapors. By integrating EVOH into multi-layer co-extruded films, manufacturers can achieve the best of both worlds: the physical toughness of PE and the unmatched barrier performance of EVOH.
EVOH is a copolymer of ethylene and vinyl alcohol. The vinyl alcohol segments contribute highly polar hydroxyl groups (-OH), which create strong intermolecular hydrogen bonds. These tight molecular bonds form a crystalline structure that acts as a physical maze, preventing small gas molecules like oxygen (O₂), carbon dioxide (CO₂), and nitrogen (N₂) from passing through. The ethylene content, on the other hand, provides processability, flexibility, and water resistance, ensuring the polymer can be easily extruded and formed into flexible liner films.
In industrial liner applications, EVOH is typically sandwiched between structural layers of PE using specialized adhesive "tie" layers. A common structure is PE/Tie/EVOH/Tie/PE. This co-extrusion technology ensures that the EVOH layer remains protected from direct contact with water (which can plasticize the hydroxyl groups and temporarily reduce its gas barrier properties) while keeping the overall liner highly flexible, puncture-resistant, and heat-sealable.
The global market for industrial liners utilizing EVOH plastic is experiencing rapid growth, driven by tightening environmental regulations, globalization of supply chains, and a heightened focus on product purity. Regulatory bodies worldwide are enforcing strict limits on VOC emissions and chemical container permeation. EVOH-lined drums and IBCs allow chemical manufacturers to comply with these environmental standards by virtually eliminating chemical evaporation through the packaging walls.
Furthermore, the shift from rigid steel containers to flexible or semi-rigid intermediate bulk containers (IBCs) with replaceable liners has revolutionized bulk liquid logistics. Replacing a contaminated liner is far more cost-effective and environmentally friendly than cleaning and reconditioning a rigid steel drum. EVOH liners make this transition possible for highly sensitive products, including aseptic food purees, specialty chemicals, fragrances, and agricultural pesticides, ensuring that the bulk container itself remains clean and reusable without cross-contamination.
From heavy chemical shipping to aseptic food logistics, EVOH plays a critical role in preserving product value and protecting the environment.
Industrial chemicals, aromatic solvents, fuels, and paints contain highly volatile organic compounds. EVOH liners prevent the permeation of these hydrocarbons through the container walls, mitigating fire hazards, odor escape, and product loss during long-distance shipping and warehousing.
Bulk food ingredients such as fruit concentrates, tomato pastes, dairy products, and edible oils are highly susceptible to oxidation, which ruins taste, color, and nutritional value. EVOH liners block oxygen ingress, extending shelf-life and allowing preservative-free storage.
Pesticides, herbicides, and liquid fertilizers are chemically aggressive and environmentally hazardous. EVOH co-extruded liners protect the outer container from chemical degradation while ensuring zero active ingredients escape into the surrounding soil or storage facilities.
As the packaging industry moves towards a circular economy, the primary development trend for EVOH industrial liners is sustainability and recyclability. Historically, multi-layer plastics were difficult to recycle due to the mixing of incompatible polymers (PE and EVOH). However, modern material science has introduced advanced compatibilizers and optimized tie resins that allow EVOH-containing multi-layer films to be recycled within standard PE recycling streams without degrading the properties of the recycled resin.
Another major trend is the development of ultra-thin barrier layers. By utilizing advanced co-extrusion dies, manufacturers can reduce the thickness of the EVOH layer to just a few microns while maintaining superior barrier performance. This reduces overall material usage, lowers costs, and minimizes the carbon footprint of the packaging. Additionally, the integration of smart indicators within the liner structure to monitor oxygen levels or temperature changes in real-time is an emerging area of research for high-value chemical and bio-pharmaceutical transport.
Since its establishment in 1950, TPS Specialty Chemical Limited has always focused on innovation and development in the chemical industry. Headquartered in Argentina, after more than 70 years of development, TPS has grown into one of the leading companies in the global chemical industry. We have branches around the world, especially in Hong Kong, which has laid the foundation for our rapid growth in the Global market. As a company with an international vision, TPS actively seeks in-depth cooperation with well-known local chemical companies in many countries and regions to jointly develop a series of innovative products with market competitiveness.
Looking to the future, TPS Specialty Chemical Limited will continue to expand its global business and actively respond to market challenges with the purpose of "innovation-driven, win-win cooperation". We believe that through close cooperation with partners, TPS will play a more important role in the global chemical industry and create greater value for customers and society.
Founded in 1950, TPS Specialty Chemicals Co., Ltd. is a global supplier of specialty chemicals and polymer materials, providing a comprehensive product portfolio and full-service solutions to customers worldwide. Guided by the philosophy of “complete product categories, integrated services, and deep value-chain expertise,” TPS focuses on EVOH resin, CPP and PVDC raw materials, specialty equipment, and high-performance plastic additives, delivering reliable and efficient solutions for diverse industrial applications.
With decades of experience in the polymer and materials industry, TPS has developed strong partnerships with leading chemical manufacturers across China and international markets. As a professional polymer materials supplier and specialty chemicals distributor, we not only ensure consistent product quality and stable supply, but also support customers with application guidance, technical consultation, and customized sourcing solutions.
Our commitment to technological innovation is supported by state-of-the-art facilities and a highly experienced global team.
In the Chinese mainland, TPS has set up the R&D center in Chongqing City to focus on the research and development of high-tech materials and successfully launched high-barrier material EVOH resin. This product is widely used in food packaging, medicine and cosmetics with its excellent gas barrier properties and chemical stability, meeting the market's growing demand for high-performance materials. Our R&D team combines the technical advantages of Multi-parties and is committed to continuously improving the quality and performance of products in order to better serve customers and the market.
TPS Specialty Chemical Limited has a team of experienced professionals, including chemical engineers, R&D experts and marketing personnel. With their deep industry knowledge and rich practical experience, they provide strong support for the company's continuous innovation and development. We always attach importance to the growth and training of employees, and strive to encourage teamwork and innovation in a positive working environment so that every employee can fully realize their potential.
Why global enterprises trust TPS Specialty Chemical Limited for high-barrier liner solutions.
The company has independent research and development capabilities and multiple patents, advanced production processes and technological innovation capabilities, and can meet the market demand for high-quality products.
Large plant and production scale enable it to have efficient production capacity, can achieve large-scale production, and reduce unit costs.
TPS provides diversified products covering multiple fields, including chemicals, new materials, etc., to meet different market needs.
The R&D center is located in Chongqing, with convenient transportation, which is convenient for raw material procurement and product transportation, and improves logistics efficiency.
The company focuses on sustainable development, actively adopts environmentally friendly materials and technologies, meets modern environmental standards, and enhances market competitiveness.
With branches spanning Argentina, Hong Kong, and Mainland China, we offer seamless supply chain management and technical support to our industrial packaging partners worldwide.
Our versatile high-barrier products find critical uses across multiple demanding industries.
Preserving freshness and taste in bulk storage.
Ensuring sterility and chemical stability of active ingredients.
High-barrier oxygen protection to prevent food spoilage.
Biodegradable and UV resistant films for modern farming.
High-Performance Agricultural Protective Films
Aseptic Bulk Fruit Packaging Solutions
Select the ideal high-barrier thermoplastic grade tailored for your specific industrial liner and packaging requirements.