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Discover our primary high-barrier EVOH polymers designed for co-extrusion, extrusion coating, and multilayer barrier film applications.
Ethylene Vinyl Alcohol (EVOH) is a formal copolymer of ethylene and vinyl alcohol. Renowned globally for its exceptional gas barrier properties, EVOH plastic is widely utilized as a discrete barrier coating layer in multi-layer polymer structures. By combining the processing ease of ethylene polymers with the outstanding gas-barrier attributes of vinyl alcohol polymers, EVOH effectively shields sensitive products from oxygen, carbon dioxide, helium, and various organic solvents.
As a barrier coating material, EVOH is typically incorporated via co-extrusion or extrusion coating technologies. When applied to substrates such as polyethylene (PE), polypropylene (PP), or polyethylene terephthalate (PET), EVOH coatings drastically reduce gas transmission rates. This makes them highly essential in modern food preservation, pharmaceutical packaging, agricultural protection, and industrial chemical containment.
The efficacy of EVOH as a barrier coating is primarily determined by its ethylene content (typically measured in mol%). A lower ethylene content increases gas barrier performance but makes the polymer more challenging to process. Conversely, higher ethylene content enhances melt processability and flexibility at the cost of slight reductions in gas barrier performance. Suppliers like TPS Specialty Chemical Limited provide tailored EVOH grades (such as 29 mol%, 32 mol%, and 44 mol%) to match specific application demands.
The global demand for EVOH plastic in barrier coatings is experiencing unprecedented growth. Driven by the food packaging industry's need to extend shelf life, minimize waste, and maintain organic integrity without chemical preservatives, EVOH has transitioned from a specialty polymer to a mainstream packaging standard.
Reduces oxygen transmission rates (OTR) to near-zero levels, preventing oxidation and spoilage in sensitive packaged goods.
Prevents the escape of volatile organic compounds, keeping flavors, fragrances, and essential oils locked inside.
Highly resistant to hydrocarbons, oils, and organic solvents, making it ideal for fuel tanks and industrial linings.
From a commercial perspective, chemical manufacturers and compounders are continuously optimizing EVOH formulas. Modern processing facilities utilize advanced multi-layer co-extrusion blown film lines, cast film lines, and blow molding equipment. This allows the integration of ultra-thin EVOH layers (often ranging from 3 to 10 microns) sandwiched between structural polyolefins using specialized maleic anhydride-modified tie resins. This layout ensures maximum cost-efficiency while delivering supreme barrier performance.
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.
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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 barrier coatings are versatile solutions applied across diverse industries to protect integrity, prolong usability, and prevent environmental contamination.
Fresh produce requires controlled atmospheric packaging. EVOH coatings manage oxygen transmission, keeping vegetables and fruits crisp, preserving vitamins, and delaying decay during transit.
Medicines, blister packs, and medical fluids are highly sensitive to moisture and oxidation. EVOH barrier coatings ensure medical compounds remain chemically stable and sterile over long shelf periods.
Used in pesticide bottles and seed storage. EVOH prevents highly volatile agricultural chemicals from permeating the plastic container walls, protecting farmers and the environment from toxic fumes.
Prevents discoloration and bacterial growth by maintaining modified atmosphere packaging (MAP) gas mixtures (like nitrogen and carbon dioxide) inside meat trays and vacuum pouches.
Integrated into plastic fuel tanks (PZEV systems) to stop volatile fuel vapours from escaping into the environment, complying with strict international automotive emission standards.
Protects sensitive microchips, circuit boards, and optical components from moisture ingress and electrostatic charges, ensuring product reliability during long-distance shipping.
As the global packaging industry shifts toward circular economy models, the sustainability of barrier coatings has become a primary focus. Traditionally, multi-layer plastics containing different polymers faced challenges in mechanical recycling streams. However, modern technological advancements are reshaping this narrative.
Research shows that multi-layer structures containing less than 5% to 10% EVOH by weight can be successfully recycled within standard polyolefin recycling streams (such as HDPE and PP) without compromising the quality of the recycled resin. This compatibility makes EVOH an attractive choice compared to non-recyclable metallized films or PVDC coatings, which release harmful chlorine compounds during processing.
Key trends shaping the future of EVOH barrier coatings include:
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.
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. 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.
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.
Inquire Now & Get QuotesBrowse our full catalog of EVOH resins, chemical intermediates, and specialized barrier materials manufactured to meet global regulatory and performance standards.