In the realm of fresh food packaging, ensuring extended shelf life, maintaining product integrity, and withstanding the challenges of global cold chain logistics are essential. Traditional monolayer films often fall short due to their limited barrier properties. EVOH asymmetric co-extrusion film, engineered with a precision-built 7-layer structure, is quickly emerging as the benchmark solution for premium meat packaging—particularly in export markets—thanks to its superior all-around performance.

In industries such as food, pharmaceuticals, and medical devices—where sensitivity to contamination is critical—the safety of packaging materials remains a top priority. EVOH (ethylene-vinyl alcohol copolymer), widely used for its superior barrier performance, is often questioned: Could it leach ions or small molecular substances when in contact with packaged contents? The answer is a firm no. Because when it comes to packaging, safety is non-negotiable.

In the world of premium food and pharmaceutical packaging, EVOH (ethylene vinyl alcohol copolymer) films are prized for their exceptional barrier performance. However, the corona treatment process—necessary to improve ink adhesion—introduces a serious risk: corona breakdown. Invisible pinholes caused by excessive discharge act like micro-cracks in a vault, instantly compromising the film’s oxygen barrier and rendering the entire roll unusable, with potentially severe economic consequences.

In premium packaging sectors such as food, medical devices, and pharmaceuticals, even minor visual imperfections in EVOH high-barrier film can impact brand perception. A roll of film that winds flat and smooth is more than an aesthetic goal—it’s a sign of quality and process control. Yet, telescoping, or bulging during rewinding, remains a common challenge. Beyond its appearance, this issue reflects uneven internal stress distribution, which may compromise barrier performance, shelf life, and product safety.

EVOH (ethylene-vinyl alcohol copolymer) is widely recognized for its exceptional oxygen barrier properties, making it a material of choice for high-performance packaging in the food, cosmetics, and medical industries. However, its tendency to absorb moisture under high-humidity conditions has long limited its use in applications like cold chain logistics and fresh food packaging, where moisture resistance is critical.

Recent advancements in low-energy electron beam (EB) irradiation technology offer a promising solution. By precisely modifying the molecular structure of Evoh Films, this technique significantly enhances their performance in humid environments—without compromising clarity or mechanical strength. It opens new doors for EVOH in applications once considered beyond reach.

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?