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Explore our primary selection of Ethylene Vinyl Alcohol (EVOH) copolymer resins engineered specifically to deliver superior oxygen, moisture, and chemical resistance across packaging and industrial applications.
Ethylene Vinyl Alcohol (EVOH) stands as one of the most remarkable copolymer structures in modern polymer science. Structurally, it is synthesized by the saponification of ethylene-vinyl acetate (EVA) copolymers. This chemical configuration grants it a dual nature: the ethylene units provide thermoplastic processability and moisture resistance, while the vinyl alcohol segments offer exceptionally high crystalline density. The strong intermolecular and intramolecular hydrogen bonding within the vinyl alcohol segments creates a highly organized crystalline matrix that acts as a virtually impassable barrier to gases, hydrocarbons, organic solvents, and volatile chemicals.
When evaluated for chemical resistance, EVOH exhibits outstanding performance against oils, greases, mineral acids, organic solvents, and fuels. This makes it an indispensable component in co-extruded structures designed for packaging aggressive agricultural chemicals, volatile fuel mixtures, and industrial chemical solvents. Unlike standard polyolefins such as High-Density Polyethylene (HDPE) or Polypropylene (PP), which can swell, soften, or allow volatile organic compounds (VOCs) to permeate through their polymer chains, EVOH maintains its structural integrity and blocks permeation at a molecular level.
The global demand for high-barrier plastic raw materials, particularly EVOH, is witnessing exponential growth. This surge is driven by increasingly stringent environmental regulations regarding volatile emissions, the expansion of the global chemical supply chain, and the transition toward lightweight, sustainable packaging solutions. Historically, chemical packaging relied heavily on glass or steel containers. While these traditional materials offer excellent chemical resistance, they present significant disadvantages, including high weight, susceptibility to breakage, corrosion, and a high carbon footprint during transportation.
EVOH has revolutionized this sector by enabling multi-layer co-extrusion technology. By combining EVOH with structural polymers like HDPE or PP through specialized adhesive tie layers, manufacturers can produce lightweight, durable, and shatterproof plastic containers that match the chemical barrier performance of glass or steel. This multi-layer technology is now the standard for manufacturing agrochemical bottles, automotive fuel tanks, and industrial chemical drums.
Furthermore, the commercial trend is shifting rapidly toward circular economy compliance. Modern EVOH formulations focus on maintaining barrier efficiency at thinner layer thicknesses (down to a few microns), which facilitates easier recycling within polyolefin streams. As regulatory bodies enforce strict limits on plastic packaging waste, the development of recyclable EVOH barrier systems has become a top priority for global chemical suppliers and packaging engineers.
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.
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.
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.
EVOH is deployed across critical sectors where ordinary plastics fail. Discover the deep technical requirements of each core application field.
Agrochemical formulations often contain highly active organic solvents, emulsifiers, and surfactants that easily permeate standard polyethylene (HDPE) containers. This permeation leads to container deformation (panelling), weight loss of the product, and dangerous exposure to the environment. Integrating a thin EVOH barrier layer inside co-extruded HDPE bottles provides absolute containment, preserving chemical concentrations and ensuring structural durability during long-term storage.
Under strict global environmental standards (such as EPA and Euro 6 regulations), evaporative fuel emissions from vehicles must be kept close to zero. EVOH is widely utilized as the barrier layer in multi-layer plastic fuel tanks. It completely blocks the permeation of hydrocarbon fuels (gasoline, diesel, and bio-fuels) through the tank walls, offering excellent chemical resistance against highly corrosive modern fuel additives and oxygenates.
Intermediate Bulk Containers (IBCs), plastic drums, and flexible bag-in-box systems used for storing and shipping industrial solvents, paints, varnishes, and cleaning chemicals rely on EVOH. The copolymer prevents organic solvents from attacking the outer structural polymer layers and ensures that hazardous chemicals do not escape into the atmosphere during transit and warehouse storage.
In medical packaging, maintaining sterile conditions and protecting active pharmaceutical ingredients (APIs) from chemical degradation is critical. EVOH protects sensitive liquid medications, parenteral nutrition solutions, and diagnostic reagents from oxygen ingress and prevents the loss of volatile active components, ensuring the efficacy and safety of medical products over extended shelf lives.
Preserves freshness and blocks oxygen ingress to extend shelf life.
Ensures sterile barrier integrity and chemical stability of medicines.
Prevents oxidation and contamination in modified atmosphere packaging (MAP).
Protects crops, silage, and containment structures from environmental stress.
Agricultural Barrier Films
Freshness Preservation Packaging
Leveraging decades of research and a robust global network, TPS delivers industry-leading polymer solutions optimized for extreme conditions.
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.
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.
Browse our complete portfolio of high-performance EVOH resins designed for packaging, medical, and agricultural applications.
