Optical thin films are ubiquitous in modern technology, from mobile phone lenses to precision lasers, from high-definition displays to high-efficiency solar cells. Their performance directly affects the performance of the final product. The key to determining the quality and production efficiency of optical thin films lies in the core equipment used in their production process. Today, let's talk about the core technologies and future development of these key devices.

The "number of layers" of co extruded film is not simply a numerical difference, but an intuitive reflection of material combination, functional integration, and performance performance. The 9-layer co extruded film has an additional 2-layer structure compared to the 7-layer structure, which brings about an essential upgrade in material design flexibility, functional segmentation ability, and application scenarios.

In today's increasingly stringent packaging performance requirements in industries such as food, medicine, and electronics, multi-layer co extruded films have become the mainstream choice in the market due to their excellent barrier properties, mechanical strength, and environmental characteristics. As a professional co extrusion film manufacturer with 7-9 layer blowing equipment (maximum width of 2.2 meters), we are committed to providing customers with 'high-performance, customized' packaging solutions through symmetrical and asymmetrical structural design, helping enterprises seize market opportunities!  

In the packaging industry, a good film material is not only the "protective layer" of the product, but also the "secret weapon" for enterprises to reduce costs and increase efficiency! As a practical practitioner who has been deeply involved in the co extrusion film field for many years, today we will take you to unlock the "Full Scene Co Extrusion Film Solution" - from bottom blown water-cooled 7-layer barrel film to top blown symmetrical/asymmetrical structural film, how can the 7-layer/9-layer core technology break through traditional bottlenecks and make packaging "tough, material saving, and adaptable to the whole industry"?

In today's world where food packaging pursues "180 day freshness lock", pharmaceutical packaging strictly adheres to "sterile standards", and electronic packaging urgently needs "anti-static black technology", the performance upgrade of multi-layer co extruded film has become a core proposition in the global flexible packaging industry. Koes Chemical has accurately identified market pain points and launched CF420 multi-layer co extrusion special adhesive, which uses revolutionary technology to solve the three major difficulties in the industry and redefine the bonding standards for co extrusion films.

This paper focuses on colorless nano high transmittance and anti reflection AR glass, systematically explaining its optical principles, performance advantages, application fields, and innovative preparation methods. By studying the design of nanoscale materials and multilayer film structures, the low reflection and high transmission characteristics of glass in the visible light band can be achieved, effectively solving the problems of high reflectivity and insufficient transmittance of traditional glass. In this paper, the preparation processes such as magnetron sputtering method and sol gel method are introduced in detail, and the influence of process parameters of each method on the film performance is analyzed, which provides theoretical and practical basis for the research and development and industrial application of colorless nano AR glass with high transmittance and antireflection.

Eliminating the solvent drying process, shortening the production cycle by 20%, reducing overall costs by 15% -20%, and adapting to the latest revised five layer co extrusion blown film unit standard in Guangdong Province (screw length to diameter ratio of 32:1, die diameter of 550mm).

Abstract: This paper conducts in-depth research on anti reflection films for solar cells, aiming to design efficient anti reflection films to improve the photoelectric conversion efficiency of solar cells. By elaborating on the design principles of anti reflection films, analyzing the application of different materials and structures in solar cells, and combining simulation and experimental data, exploring the influence of various factors on the anti reflection effect. The research results indicate that the optimized design of anti reflection film can significantly reduce the surface reflectivity of solar cells, providing theoretical and practical basis for improving the performance of solar cells.

Abstract: This article focuses on the design and preparation of ultra wideband anti reflection films. Firstly, the key role and research background of ultra wideband anti reflection films in modern optical systems are elaborated. Then, the design principles are analyzed in detail, including traditional design methods based on multi-layer film interference theory and innovative design ideas introducing the concept of gradient refractive index. In terms of preparation technology, the application and advantages and disadvantages of various techniques such as electron beam evaporation, atomic layer deposition, and tilted deposition were discussed. Through experimental research, ultra wideband anti reflection films with specific properties were successfully prepared and their performance was comprehensively characterized. The research results provide important references for the widespread application of ultra wideband anti reflection films in high-power laser systems, solar photovoltaics, and other fields.

Abstract: This study aims to investigate the effect of SiO ₂ half wave coating on the laser damage characteristics of HfO ₂/SiO ₂ high reflective films. HfO ₂/SiO ₂ high reflective film samples with different SiO ₂ half wave coverage states were prepared by electron beam evaporation technology. Laser irradiation experiments were conducted on the samples using a 1064nm pulsed laser, and characterization techniques such as scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used to analyze the damage morphology, roughness changes, and differences in damage thresholds of the film layers. The research results indicate that the reasonable introduction of SiO ₂ half wave coating can effectively improve the anti laser damage performance of high reflection films, providing important reference for the design and preparation of high-performance reflection films in high-power laser systems.

Abstract: This article focuses on the design and preparation of ultra wideband anti reflection films. Firstly, the key role and research background of ultra wideband anti reflection films in modern optical systems are elaborated. Then, the design principles are analyzed in detail, including traditional design methods based on multi-layer film interference theory and innovative design ideas introducing the concept of gradient refractive index. In terms of preparation technology, the application and advantages and disadvantages of various techniques such as electron beam evaporation, atomic layer deposition, and tilted deposition were discussed. Through experimental research, ultra wideband anti reflection films with specific properties were successfully prepared and their performance was comprehensively characterized. The research results provide important references for the widespread application of ultra wideband anti reflection films in high-power laser systems, solar photovoltaics, and other fields.

From January to March 2025, the total revenue of six lithium battery separator enterprises was 10.446 billion yuan, and the total net profit was 483 million yuan (including the losses of loss making enterprises).