In the high-barrier packaging industry, EVOH films are widely used due to their outstanding oxygen barrier properties and mechanical strength. They are essential in applications such as cold-chain food packaging, sterile medical device pouches, and moisture-sensitive electronics. As the demand for recyclable, high-performance films continues to grow, EVOH is increasingly adopted in sustainable multilayer film structures. However, stretch deformation during production—such as film narrowing or thinning—remains a recurring issue. One of the main contributors to this problem is improper tension control during film processing.

EVOH (ethylene-vinyl alcohol copolymer) is widely recognized for its outstanding oxygen barrier properties, making it a preferred material in demanding sectors such as food packaging, medical devices, automotive fuel systems, and underfloor heating. However, as its use expands into outdoor and harsh environments, the weather resistance of EVOH co-extruded films is becoming a critical factor affecting long-term performance.

As manufacturers of EVOH high-barrier films work to improve production efficiency and reduce environmental impact, choosing the right curing technology has become increasingly important. While UV curing has long been a go-to method, its high energy consumption and reliance on costly additives are proving less sustainable. In contrast, electron beam (EB) curing offers a modern, cost-effective alternative that is gaining traction across the industry.

As the global flexible packaging industry experiences a shift toward higher performance and greater sustainability, EVOH (ethylene-vinyl alcohol copolymer) co-extrusion films are emerging as a pivotal material in advancing packaging technology. According to Smithers’ latest research, the global high-barrier flexible packaging market is projected to reach $28.5 billion in 2024, with EVOH-based multilayer films growing at an annual rate exceeding 6.8%.

In the field of high-barrier packaging materials, ethylene-vinyl alcohol copolymer (EVOH) stands out for its superior gas barrier properties and mechanical strength. Among its mechanical properties, the elastic modulus plays a pivotal role—it directly influences processability, tactile performance, and end-use suitability. So how can the elastic modulus of EVOH films be scientifically evaluated? What standards apply?

In today’s highly competitive market for premium packaging materials, manufacturers of EVOH high-barrier films are under increasing pressure. On one hand, raw material costs continue to climb; on the other, environmental regulations grow ever more stringent. Against this backdrop, improving production efficiency while controlling costs—without compromising product quality—has become a top priority. Electron Beam (EB) curing technology is emerging as a transformative solution that addresses both challenges head-on.

As one of the core processes in co-extruded film manufacturing, the blown film method has demonstrated distinct advantages in producing EVOH high-barrier films. With the global demand for advanced barrier packaging continuing to grow—particularly in food, medical devices, and automotive components—mastering the blown film process for EVOH materials has become a key competency for industry players.

In EVOH high-barrier film manufacturing, tension control plays a critical role—not just in process stability, but also in determining the overall quality and performance of the final product. As global demand for high-barrier packaging continues to rise—particularly in food, healthcare, and automotive sectors—mastering precise and adaptive tension control has become a fundamental requirement for competitive production.

EVOH (ethylene-vinyl alcohol copolymer) films are widely recognized for their outstanding oxygen barrier properties, making them an essential material in high-end packaging applications such as fresh food, ready meals, and perishable goods. However, one recurring technical challenge during film production is winding deviation—an issue that significantly impacts both product quality and production efficiency.

With increasing attention to food safety and tighter environmental regulations, concerns about chemical residues in packaging have become critical. Traditional curing processes often rely on solvents and photoinitiators, which pose migration risks and may compromise both food safety and flavor. Electron beam (EB) curing technology offers a clean, effective solution for EVOH multilayer composite films, eliminating chemical residues while setting new standards for food packaging safety.