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Ethylene Vinyl Alcohol (EVOH) copolymer is a semicrystalline thermoplastic renowned for its exceptional gas barrier properties. Its tightly packed polymer chains create an almost impermeable wall against oxygen, carbon dioxide, and — critically — volatile aroma compounds. This makes EVOH the material of choice whenever preserving fragrance integrity is paramount.
Aroma compounds are highly volatile organic molecules. Even trace permeation through standard packaging can result in significant flavor or scent loss within days. EVOH's oxygen transmission rate (OTR) can be as low as 0.01–0.05 cc·mm/(m²·day·atm) at 0% RH, outperforming PVDC, nylon, and standard polyolefins by orders of magnitude.
In multilayer coextrusion structures, EVOH serves as the core barrier layer — sandwiched between moisture-resistant polyolefin layers — delivering both aroma retention and moisture protection simultaneously, a critical combination for premium food, beverage, cosmetic, and pharmaceutical packaging.
EVOH's crystalline structure delivers OTR values as low as 0.01 cc·mm/(m²·day·atm), preventing oxidative degradation of aromatic compounds and extending the perceptible shelf-life of scented products by 3–5×.
By pairing EVOH with polyolefin outer layers in coextruded structures, moisture uptake — which can slightly reduce EVOH's barrier at high RH — is effectively managed, maintaining aroma lock performance across humid environments such as cold chain logistics.
TPS EVOH grades such as 3201-CP are engineered for thermostability, retaining barrier integrity during hot-fill, pasteurization, and retort processes — critical for aroma-sensitive beverages, sauces, and ready-meal packaging.
Modern EVOH multilayer films are increasingly designed for recyclability. TPS 3801-SF exemplifies this trend — offering full oxygen and aroma barrier performance within a structure compatible with polyolefin recycling streams, meeting EU and global sustainability mandates.
EVOH is chemically inert to most organic solvents and aromatic compounds. It does not leach plasticizers or absorb flavors, making it ideal for premium fragrance packaging, essential oil containers, and flavor-sensitive food contact applications.
EVOH thermoplastic materials are compatible with blown film, cast film, injection molding, blow molding, and thermoforming processes. This versatility enables aroma-protective packaging across rigid containers, flexible pouches, tubes, and specialty formats.
The global EVOH market is projected to exceed USD 1.8 billion by 2030, with aroma-protection applications representing one of the fastest-growing segments. Here are the key forces reshaping this industry.
Consumers increasingly demand authentic, restaurant-quality taste experiences from packaged goods. Brands are turning to EVOH-based multilayer packaging to guarantee that the aroma profile of premium coffees, wines, artisan sauces, and specialty snacks reaches the consumer exactly as intended — driving double-digit growth in high-barrier flexible packaging.
The EU Packaging and Packaging Waste Regulation (PPWR) and similar frameworks worldwide are pushing brand owners to adopt mono-material or recyclable multilayer structures. Next-generation EVOH grades enable aroma-protective packaging that qualifies for polyolefin recycling streams, making sustainability and performance no longer a trade-off.
Active pharmaceutical ingredients (APIs) and nutraceuticals are highly sensitive to oxygen and volatile compound migration. EVOH blister films and bottles are becoming standard in pharmaceutical packaging, where aroma and chemical barrier directly impact product efficacy, regulatory compliance, and patient safety.
The USD 430+ billion global cosmetics industry is adopting EVOH-laminated tubes, pouches, and airless dispensers to protect precious fragrance formulations. EVOH prevents both oxygen ingress that degrades aromatic molecules and outward scent migration that signals quality loss to consumers.
EVOH's solvent and chemical resistance makes it invaluable for agricultural chemical packaging — preventing the escape of volatile pesticide and herbicide aromas that indicate product degradation or pose inhalation hazards. SVW™ EW-4401S is purpose-engineered for these demanding agrochemical containment applications.
The booming USD 150+ billion global pet food market demands packaging that preserves palatability-critical aroma compounds. EVOH 3201-PF delivers the oxygen and aroma barrier necessary to keep wet and dry pet foods fresh and appetizing throughout extended shelf lives, meeting the expectations of pet-humanization trends.
From the delicate terpene profiles of fresh herbs and tropical fruits, to the sulfurous volatiles that signal meat freshness, to the complex fragrance molecules in luxury perfumes — EVOH thermoplastic barrier layers are the invisible guardian of aroma integrity across virtually every consumer and industrial packaging category. TPS EVOH grades are formulated to meet the precise barrier, processability, and sustainability requirements of each application domain.
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. 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.
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.
TPS's Chongqing R&D center combines multi-party technical advantages to continuously improve EVOH product quality and performance. Our team of chemical engineers, R&D experts, and marketing professionals provides strong support for ongoing innovation in aroma barrier materials.
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 aroma-protective 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. Key research areas include next-generation recyclable EVOH structures, bio-based EVOH development, and nano-composite barrier enhancement technologies.
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 in EVOH aroma protection materials.
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. Our global installation network ensures rapid technical support and consistent product supply for 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 aroma barrier products.
Large plant and production scale enable efficient production capacity, achieving large-scale EVOH manufacturing and reducing unit costs — ensuring stable supply for global aroma protection packaging demands.
TPS provides diversified EVOH products covering multiple fields, including food packaging, pharmaceuticals, cosmetics, agriculture, and electronics, to meet different market needs for aroma and barrier performance.
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 for global customers.
The company focuses on sustainable development, actively adopts environmentally friendly materials and technologies, meets modern environmental standards, and enhances market competitiveness with recyclable EVOH solutions.
As a professional polymer materials supplier and specialty chemicals distributor, TPS supports customers with application guidance, technical consultation, and customized sourcing solutions for aroma protection challenges.
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. Contact us today to discover how our EVOH thermoplastic materials can protect your product's aroma integrity.