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The medical device and pharmaceutical sectors operate under some of the most stringent regulatory environments globally. Maintaining sterile integrity, preventing degradation from oxygen and moisture, and ensuring long-term shelf life are critical parameters for medical packaging. Ethylene Vinyl Alcohol (EVOH) copolymer plastics and resins have become the cornerstone of high-barrier medical packaging design.
In the current healthcare packaging market, there is a distinct transition away from traditional glass and heavy metallic packaging toward flexible, lightweight, and thermoformed multi-layer polymeric structures. EVOH acts as the essential functional barrier layer in these structures, offering unmatched gas protection. The commercial demand for EVOH resins in medical applications is growing rapidly due to the expansion of biopharmaceuticals, home healthcare devices, and pre-filled syringe systems that are highly sensitive to oxidation.
Key Trend: The global demand for medical-grade EVOH is driven by the rise of complex biologics and oxygen-sensitive diagnostic reagents, requiring multi-layer films that guarantee zero degradation over extended storage periods.
Furthermore, regulatory compliance (such as FDA approvals, USP Class VI compliance, and ISO 10993 biocompatibility standards) is shaping the development of next-generation EVOH formulations. Industry players are focusing on developing EVOH resins with optimized ethylene content (typically ranging from 27% to 44% mol) to balance gas barrier performance with flexibility and processing ease during co-extrusion blow molding or thermoforming.
EVOH is rarely used as a single monolayer film due to its sensitivity to moisture. Instead, it is integrated as the core barrier layer in multi-layer co-extruded structures (such as PP/EVOH/PP, PE/EVOH/PE, or PET/EVOH/PE). Below are the deep application scenarios where EVOH plays a decisive role in medical safety:
Liquid medications, parenteral nutrition solutions, and saline bags are highly susceptible to oxygen ingress, which can degrade active pharmaceutical ingredients (APIs). A multi-layer film incorporating EVOH acts as a shield against oxygen transmission, preserving the stability and sterility of the liquid solutions throughout their shelf life.
Heavy surgical tools, orthopedic implants, and catheters require rigid, impact-resistant packaging. Thermoformed trays made from co-extruded sheets with an EVOH core layer prevent atmospheric oxygen and humidity from reaching the sterile device, preventing corrosion or contamination prior to surgical use.
Traditional blister packs often rely on PVDC or aluminum foil. However, modern pharmaceutical blister packaging increasingly utilizes EVOH-containing co-extruded films. This transition provides excellent clarity for visual inspection of tablets and capsules while offering superior oxygen barrier properties, making it an eco-friendly and cost-effective alternative.
In-vitro diagnostic (IVD) kits, rapid test strips, and biosensors contain active enzymes and chemical reagents that degrade rapidly in the presence of humidity and oxygen. EVOH barrier pouches serve as a reliable barrier, maintaining a controlled internal micro-environment to ensure accurate test results.
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.
"Guided by the philosophy of complete product categories, integrated services, and deep value-chain expertise, TPS delivers reliable and efficient polymer solutions for diverse industrial and medical applications."
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.
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.
Send InquiryAs a professional polymer materials supplier and specialty chemicals distributor, TPS Specialty Chemicals Co., Ltd. provides a comprehensive product portfolio and full-service solutions to customers worldwide. We focus on EVOH resin, CPP and PVDC raw materials, specialty equipment, and high-performance plastic additives.
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", we ensure consistent product quality, stable supply, technical consultation, and customized sourcing.
A critical aspect of medical packaging is its ability to undergo sterilization without losing physical properties or barrier performance. Traditional sterilization methods like steam autoclaving, Ethylene Oxide (EtO) gas exposure, and gamma radiation can place stress on polymeric chains. Ethylene Vinyl Alcohol (EVOH) displays high chemical resistance, but its molecular structure can absorb moisture during autoclave processes, temporarily decreasing its oxygen barrier performance until the material completely dries.
To address this issue, advanced sterilization technologies such as low-energy self-shielded electron beam (E-Beam) systems are utilized. The TPCEB-200 Low-Energy Self-Shielded Electron Beam System represents a major technological leap. E-Beam sterilization offers high dosage rates, allowing for high-speed treatment of medical packaging surfaces without generating chemical residues or thermal stress. Because E-beam sterilization occurs rapidly and can target specific packaging layers, it minimizes the degradation of the delicate EVOH barrier, maintaining optimal gas shielding and packaging integrity.
Technical Note: Combining high-barrier EVOH co-extruded films with E-Beam sterilization systems ensures that medical devices are sterilized efficiently while preserving the physical strength and clarity of the packaging laminate.
While medical packaging remains our primary high-tech application, TPS high-barrier resins and specialty chemical technologies are utilized across multiple demanding industries:
