In the production process of cold lamination film, how to avoid the influence of condensation generated during the cooling process on the quality of the film?
Cold lamination film, as a key material for protecting the surface of printed materials, enhancing visual effects and extending service life, its quality is directly related to the aesthetics and durability of the final product. During the cooling process, if the formation of condensation water is not effectively controlled, the following problems may occur:
Surface defects: Condensation water adheres to the film surface, and may leave watermarks or spots after drying, affecting the flatness and glossiness of the film surface.
Degradation of bonding performance: Condensation water may penetrate into the glue layer, affecting the uniform distribution and curing effect of the glue, thereby reducing the bonding strength between the film and the substrate.
Impaired dimensional stability: The uneven distribution of water molecules will cause the film material to shrink or expand locally during the cooling process, affecting the dimensional accuracy.
Accelerated aging: The long-term presence of trace moisture will accelerate the aging process of the film material and shorten its service life.
HANKER's technical response strategy
HANKER is equipped with advanced dehumidification and temperature control systems in its two production bases. These systems can not only accurately control the humidity and temperature of the production environment, but also effectively remove moisture from the air through pretreatment steps before the cooling stage of the cold laminated film, ensuring that the cooling area is in a low-humidity environment. Through precise environmental control, the conditions for the formation of condensed water are reduced, fundamentally reducing the impact of condensed water on the quality of the film material.
After in-depth research, HANKER's R&D center has developed a unique cooling technology, namely the "progressive cooling method". This method reduces the temperature of the film material in stages, and each stage is set with a strict temperature gradient and duration to ensure that the internal stress of the film material is evenly released during the slow cooling process, while avoiding the condensation of condensed water caused by rapid temperature changes. The cooling equipment is designed with a guide structure inside, so that even if a small amount of condensed water is formed, it can be quickly guided to the collection device to avoid direct contact with the film material.
HANKER's raw materials such as PVC calendered film and release paper focus on the optimization of surface properties during the production process. By adjusting the formula and production process, a fine hydrophobic layer is formed on the surface of the film material, which can effectively repel moisture and reduce the adhesion and penetration of condensed water on the film surface. In addition, for cold-mounted films with special textures, such as bright film, matte film, frosted film, etc., HANKER also uses special surface treatment technology to ensure that the clarity and uniformity of the texture are not affected by the cooling process.
On the production line of cold lamination film, HANKER installed high-precision sensors and monitoring systems to monitor the temperature, humidity and surface state of the cooling area in real time. Once an abnormality is found, such as excessive humidity or signs of condensation on the surface of the film, the system will immediately sound an alarm and automatically adjust the relevant parameters to ensure the continuity of the production process and the stability of product quality. This real-time monitoring and rapid feedback mechanism is the key to HANKER's ability to continue to provide high-quality products.
HANKER's R&D team, with its strong innovation capabilities and 20 inventions and utility model patents, continues to explore new materials and processes to meet industry challenges. In response to the problem of condensed water in the production of cold lamination films, the team is committed to developing new environmentally friendly materials and more efficient cooling technologies to further reduce environmental impact and improve product performance.
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