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Packaging film, as an indispensable part of modern industrial production, is widely used in various fields such as food, medicine, and chemical engineering. In order to meet the packaging needs of different products, the manufacturing process of packaging film is becoming increasingly diversified. This article will introduce several common packaging film manufacturing processes and explore their characteristics and applications.
The blown film process is a common method for producing thin films. Its principle is to pass molten resin material through a circular mold and inflate it into a bubble with compressed air, then cool and shape the bubble, and finally form a thin film. The characteristics of this process are high production efficiency, the ability to produce films of various thicknesses, and low cost. It is widely used in fields such as food packaging and industrial packaging.
The casting process is a technique of passing molten resin material through a narrow slit mold and extruding it into a thin film. The characteristic of this process is that it can produce films with uniform thickness and smooth surface, and can also produce films with larger width, which is suitable for high-end packaging films, pharmaceutical packaging films and other fields.
Co extrusion technology refers to the process of simultaneously extruding two or more different types of resin materials and laminating them layer by layer to form a composite film. The characteristic of this process is that it can produce composite films with various properties, such as good barrier properties and good toughness, which are widely used in fields such as food packaging and pharmaceutical packaging.
Coating process refers to the process of coating one or more layers of material on the surface of a thin film to impart special properties to the film. The characteristic of this process is that different coating materials can be selected according to different needs, such as anti-static materials, anti fog materials, anti oil materials, etc., so that the film has stronger functionality.
Composite technology refers to the process of combining two or more different film materials together to form a composite film through methods such as bonding and hot melting. The characteristic of this process is that it can combine the advantages of different materials, for example, it can composite films with good barrier properties and high strength to form composite films with multiple properties.
In addition to the common processes mentioned above, there are other packaging film manufacturing processes, such as printing processes, surface treatment processes, etc. These processes can further process the film according to different requirements, making it more suitable for specific applications.
With the development of industrial automation, packaging film production lines are also moving towards automation. Automated production lines can improve production efficiency, reduce production costs, and enhance product quality. Automated production lines typically include equipment such as automatic palletizing conveyor lines, automatic packaging lines, automatic transportation lines, automatic loading and unloading, industrial robots, and robotic arms. Jiangsu Sitec Intelligent Manufacturing Co., Ltd. is a professional provider of intelligent manufacturing solutions, which can provide various automation equipment and system integration services for packaging film production enterprises, helping them achieve intelligent production.
