Leave Your Message
Explore our flagship EVOH resin solutions engineered for outstanding chemical resistance across food packaging, agriculture, automotive and industrial applications.
A deep dive into the molecular structure and performance advantages of EVOH copolymers in chemically demanding environments.
Ethylene Vinyl Alcohol (EVOH) copolymer is a semi-crystalline thermoplastic material formed through the saponification of ethylene-vinyl acetate copolymer. Its unique molecular architecture — featuring hydroxyl (-OH) groups distributed along the polymer backbone — gives EVOH an exceptionally dense, hydrogen-bonded network that forms one of the most effective barriers against gases, solvents, and a broad spectrum of chemical agents found in modern industry.
Unlike polyethylene (PE) or polypropylene (PP), EVOH does not simply repel chemicals — it physically prevents molecular diffusion through its tightly packed crystalline structure. This makes EVOH plastic the preferred choice in applications where prolonged contact with hydrocarbons, organic solvents, oils, agricultural chemicals, and fuel vapors is expected. The material demonstrates exceptional resistance to:
EVOH resins demonstrate measurable resistance across a wide chemical spectrum. In standardized permeability tests, EVOH exhibits oxygen transmission rates (OTR) as low as 0.01–0.05 cc·mm/(m²·day·atm) at 20°C/65% RH — far outperforming PVDC, nylon, and most other barrier polymers. Beyond oxygen, EVOH's chemical resistance profile covers:
EVOH provides near-zero permeability to gasoline, diesel, and aromatic hydrocarbons (benzene, toluene, xylene), making it essential in automotive fuel system components and industrial chemical storage.
Excellent resistance to ketones, esters, alcohols, and chlorinated solvents ensures product integrity in chemical packaging, pharmaceutical containment, and laboratory supply chains.
EVOH films and containers resist permeation by pesticides, herbicides, and fertilizer compounds, protecting both the product and the environment during storage and transport.
With OTR values among the lowest of any commercial polymer, EVOH prevents oxidative degradation of sensitive contents — critical for food freshness, pharmaceutical stability, and electronics protection.
EVOH's dense structure prevents migration of flavor compounds and aroma molecules, preserving the sensory quality of food and beverage products throughout shelf life.
EVOH maintains its barrier and chemical resistance properties across a broad temperature range, supporting hot-fill, retort, and sterilization processes without degradation.
The demand for EVOH chemical resistance solutions is accelerating across multiple industries worldwide.
From food safety to fuel systems — EVOH plastic delivers proven chemical resistance across the most demanding sectors.
Prevents migration of packaging chemicals into food; resists oils, acids, and preservatives for safe, long shelf-life packaging.
EVOH films and multi-layer containers resist pesticide and herbicide permeation, ensuring safe agrochemical storage and transport.
EVOH layers in multi-layer fuel pipes and tanks provide critical hydrocarbon and fuel vapor resistance, meeting global emission standards (e.g., CARB, Euro 6).
EVOH's inertness to active pharmaceutical ingredients (APIs) and chemical sterilants makes it ideal for blister packs, IV bags, and sterile device packaging.
How EVOH is reshaping chemical containment engineering in high-stakes industrial environments.
Modern automotive fuel tanks and filler pipes are no longer simple single-layer PE structures. Stringent hydrocarbon emission regulations worldwide have made EVOH an indispensable layer in co-extruded multi-layer fuel system components. The EVOH layer — typically positioned between adhesive tie layers and HDPE outer walls — acts as an impermeable chemical resistance membrane against gasoline, ethanol-blended fuels (E10, E85), diesel, and their aromatic components.
TPS's EVOH 2901-AP is specifically engineered for this demanding environment, offering a balance of low ethylene content for maximum chemical resistance and sufficient flexibility to withstand automotive assembly processes and thermal cycling.
In the industrial chemicals sector, EVOH is increasingly specified for intermediate bulk containers (IBCs), chemical drums, and flexible packaging for solvents, cleaning agents, and specialty chemicals. The material's resistance to permeation by a wide range of organic compounds — including ketones, esters, aromatic solvents, and chlorinated hydrocarbons — makes it far superior to standard polyolefin containers in preventing chemical loss, contamination, and environmental release.
The global agrochemicals market, valued at over $250 billion, demands packaging that can withstand aggressive chemical formulations while maintaining seal integrity over extended storage periods. EVOH multi-layer films and blow-molded containers provide the chemical resistance needed to safely contain concentrated pesticide and herbicide formulations, while also meeting food-contact safety standards for dual-use agricultural packaging.
Over 70 years of chemical innovation — powering global industries with advanced EVOH and specialty polymer solutions.
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.
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.
02TPS 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.
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.
Why leading manufacturers worldwide choose TPS for EVOH chemical resistance solutions.
Independent R&D capabilities, multiple patents, advanced production processes and technological innovation to meet market demand for high-quality EVOH products.
Large plant and production scale enable efficient production capacity, achieving large-scale output and reduced unit costs for competitive pricing.
TPS provides diversified products covering multiple fields, including chemicals and new materials, to meet different market needs with tailored EVOH solutions.
R&D center located in Chongqing, with convenient transportation for raw material procurement and product delivery, improving global logistics efficiency.
Focused on sustainable development, actively adopting environmentally friendly materials and technologies, meeting modern environmental standards and enhancing market competitiveness.
From farm to pharmacy, EVOH plastic delivers reliable chemical resistance across every link of the supply chain.
Emerging technologies and market forces are reshaping how EVOH plastic is used for chemical resistance globally.
The push toward circular economy packaging is driving development of mono-material EVOH-compatible structures and improved chemical recycling processes for EVOH-containing multilayer films, reducing end-of-life environmental impact without compromising chemical resistance performance.
The rapid growth of electric vehicles is creating new demand for EVOH in battery electrolyte containment, thermal management fluid barriers, and EV charging infrastructure components — all requiring high chemical resistance to novel electrolyte formulations.
Next-generation co-extrusion equipment and adhesive tie-layer chemistry are enabling thinner, more precise EVOH layers in multi-layer structures — delivering equivalent or superior chemical resistance at lower material cost and weight.
Research into EVOH/nanoclay and EVOH/graphene oxide composite materials is showing promise for dramatically enhanced chemical resistance and barrier performance, particularly under high humidity conditions where standard EVOH performance can be affected.
Rapid growth in food safety regulation and agrochemical sector expansion across Southeast Asia, South America, and Africa is driving unprecedented demand for EVOH chemical resistance solutions in regions previously dominated by lower-performance barrier materials.
Stricter pharmaceutical packaging regulations (USP Class VI, EU MDR) are accelerating adoption of EVOH in sterile medical device packaging, where its chemical inertness and extractables profile make it a preferred alternative to PVC and PVDC in many applications.
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.
Whether you require EVOH resins for food packaging chemical resistance, agricultural containment, automotive fuel systems, or industrial barrier applications — TPS has the technical expertise, production scale, and global supply chain to deliver the right solution for your needs.
Explore the complete TPS EVOH product portfolio — engineered for chemical resistance across every industrial application.