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Premium grades designed specifically for advanced barrier coating and sterile packaging applications
In the modern packaging and materials science industries, the demand for high-performance gas barriers has reached unprecedented heights. EVOH (Ethylene Vinyl Alcohol Copolymer) plastic materials stand at the forefront of this revolution, particularly when utilized for barrier coating applications. By combining the processing ease of ethylene with the exceptional gas barrier properties of vinyl alcohol, EVOH has become the gold standard for protecting oxygen-sensitive products from degradation.
Commercially, the global market for EVOH barrier coatings is expanding rapidly. This growth is driven by several critical factors: the rising demand for extended shelf-life in food and pharmaceuticals, the strict regulatory standards governing chemical containment, and the collective industrial push toward lightweight, sustainable packaging. Traditional packaging methods often relied on heavy metal foils or thick glass containers to prevent gas exchange. Today, thin-film multi-layer structures incorporating EVOH barrier coatings offer equivalent or superior protection at a fraction of the weight, significantly reducing transportation costs and carbon emissions.
Recent developments in co-extrusion technology and polymer blending have allowed EVOH to be applied as thinner, more uniform barrier coatings. By adjusting the ethylene mol% content (typically ranging from 27 mol% to 44 mol%), manufacturers can fine-tune the material's properties. A lower ethylene content yields superior gas barrier performance under dry conditions, whereas a higher ethylene content offers improved flexibility and ease of processing. Innovations in tie-layer adhesives have also resolved historical adhesion challenges, enabling EVOH to bond seamlessly with substrate materials like PE, PP, and PET.
EVOH provides an unmatched barrier against oxygen, nitrogen, and carbon dioxide, preventing oxidation and spoilage.
Keeps volatile organic compounds and essential aromas sealed inside the packaging while keeping external contaminants out.
Highly resistant to oils, hydrocarbons, and organic solvents, making it ideal for agricultural and industrial packaging.
Ensures that the final packaged product remains highly visible and aesthetically appealing to consumers.
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.
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.
The versatility of EVOH plastic materials makes them indispensable across a wide variety of commercial and industrial domains. Below is a detailed analysis of how EVOH barrier coatings solve critical preservation and containment problems in key sectors:
Food preservation relies heavily on controlling the internal atmosphere of the package. Oxygen ingress leads to lipid oxidation, color degradation, and the growth of aerobic bacteria. EVOH barrier coatings applied to multi-layer films (typically co-extruded with PP or PE) prevent oxygen from penetrating the package. This is essential for fresh meats, processed cheeses, baby foods, and ready-to-eat meals. In MAP applications, EVOH helps maintain the customized gas mixture (such as high nitrogen or carbon dioxide levels) inside the pack, keeping the food fresh for weeks without chemical preservatives.
Medical devices, surgical instruments, and pharmaceuticals require rigorous protection against moisture, light, and gases. EVOH 3201-MA, for example, is engineered to maintain sterile conditions for medical supplies. It acts as an absolute barrier to contaminants and prevents the oxidation of sensitive pharmaceutical compounds. Blister packs and thermoformed trays coated with EVOH ensure that life-saving drugs maintain their efficacy from the manufacturing facility to the moment of patient delivery.
In agriculture, EVOH is used to coat geomembranes and pesticide packaging. Highly concentrated pesticides and fertilizers contain volatile organic compounds (VOCs) that can easily permeate standard plastics like HDPE. An EVOH barrier coating prevents these hazardous chemicals from escaping into the environment, protecting handlers and ensuring product concentration remains stable. Additionally, EVOH barrier films are used in soil fumigation to keep beneficial gases trapped in the soil, maximizing agricultural yields while minimizing chemical usage.
Heavy-duty industrial containers, chemical drums, and automotive fuel systems utilize EVOH barrier layers to prevent hydrocarbon emissions. The chemical resistance of EVOH ensures that solvents, fuels, and industrial chemicals do not degrade the container walls, complying with stringent environmental regulations regarding volatile emissions.
Combining 70+ years of chemical expertise with state-of-the-art production and R&D capabilities
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 in Hong Kong and global partnerships, we ensure timely delivery and comprehensive technical support across international borders.
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.
As environmental awareness increases globally, the packaging industry faces intense pressure to develop recyclable high-barrier solutions. Historically, multi-layer plastics containing EVOH were difficult to recycle because the different polymer layers (e.g., PE and EVOH) could not be easily separated or reprocessed together. However, modern chemical engineering is rapidly overcoming this limitation.
One major trend is the development of advanced compatibilizers. When added to the recycling stream, these additives allow EVOH and polyolefins to blend smoothly during extrusion, producing high-quality recycled resins suitable for structural applications. Furthermore, the industry is moving toward "mono-material" structures where the EVOH barrier coating is kept extremely thin (typically less than 5% of the total packaging weight). At this thickness, many recycling programs accept the material within standard polyethylene or polypropylene recycling streams without compromising the quality of the recycled plastic.
Looking forward, the integration of bio-based monomers to produce bio-EVOH is an active area of research. By sourcing ethylene from renewable agricultural resources, manufacturers aim to reduce the carbon footprint of EVOH barrier coatings even further, aligning with circular economy initiatives worldwide. TPS Specialty Chemical Limited remains committed to these sustainable innovations, aligning our Chongqing R&D focus with environmental stewardship and green chemistry.
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