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Detailed explanation of PE film production process
2024-07-16 17:05:58

The production of PE film is a complex and delicate process involving multiple key steps. Firstly, the production of PE film requires the use of polyethylene resin as raw material. In the raw material preparation stage, polyethylene resin is added to the mixer and a certain proportion of additives such as antioxidants, light stabilizers, etc. are added. The addition of these additives helps to improve the weather resistance, stability, and process ability of PE films. After thorough mixing, the raw materials form a molten premix, preparing for the subsequent steps.

The next step is to extrude the film. The premix is fed into the extruder and extruded into plastic sheets of a certain thickness through screw extrusion in a high-temperature and high-pressure environment. During the extrusion process, it is necessary to strictly control process parameters such as temperature, pressure, and screw speed to ensure that the extruded film has uniform thickness and good physical properties.

Subsequently, the extruded plastic sheet enters the coating process. In the PE protective film coating machine, the thin film is uniformly coated on the surface of the substrate through rollers or spraying, forming a layer of protective film. During the coating process, the type, concentration, and coating amount of the adhesive need to be adjusted according to the specifications and applicable fields of the PE film to ensure that the coating effect meets the requirements.

The PE film after coating needs to undergo cooling and curing treatment. Cooling and solidification can make the surface of the film smooth and sturdy, improving the wear resistance and weather resistance of the product. During the cooling and solidification process, it is necessary to control parameters such as cooling rate and temperature to avoid defects such as deformation or cracking of the film.

The cooled and solidified PE film enters the cutting and packaging process. According to customer requirements, the film is cut into specified sizes using a cutting machine and packaged. During the packaging process, it is important to maintain the cleanliness and integrity of the product to avoid contamination and damage.

Multiple quality inspections are required throughout the entire production process. Professional quality inspectors will conduct strict testing on raw materials, semi-finished products, and finished products to ensure that product quality meets standard requirements. At the same time, it is necessary to regularly clean the equipment and maintain the production line to ensure a clean and tidy production environment and the normal operation of the equipment.

To sum up, the production process of PE film includes several key steps such as raw material preparation, film extrusion, coating, cooling and curing, cutting and packaging, and quality inspection. By strictly controlling various process parameters and strengthening production management, high-quality and high-performance PE film products can be produced to meet market demand.


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