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PE protection film, fully known as polyethylene protective film, has become an indispensable protective material in many industries due to its excellent transparency, flexibility, weather resistance, and adhesion. So, what exactly is the production process of such a widely used protective film? This article unveils the entire manufacturing process of PE protection film.
The production of PE protection film begins with the selection of raw materials, which mainly includes polyethylene (PE) resin, anti-aging agents, antioxidants, UV absorbers, and more. The quality of these raw materials directly impacts the performance of the final product. Therefore, during the selection of raw materials, manufacturing companies strictly control the quality, ensuring that the raw materials meet national standards.
After the raw materials are prepared, the next step is dosing and mixing. This process involves mixing PE resin with various additives in a certain proportion, and then fully blending them through mixing equipment so that the additives are evenly distributed in the PE resin, thereby imparting the required properties to the protective film.
The blended materials are fed into an extruder. After melting at high temperature, the materials are formed into a film through an extrusion die. This process is called extrusion blow molding. The key to extrusion blow molding is to control the temperature, speed, and pressure to ensure the film's thickness is uniform and the texture is stable. During the blow molding process, the film passes through a cooling device and quickly solidifies into shape.
The PE film after blow molding needs to be coated, which means applying a special adhesive layer on the film surface. This adhesive layer gives the PE protection film excellent adhesion, allowing it to closely adhere to the surface of the protected object. The coating process has strict requirements on the type of adhesive, coating amount, and uniformity.
The coated PE protection film needs to undergo drying and curing treatment to ensure the adhesive is completely dried and cured. This process usually takes place in a high-temperature environment to ensure the adhesive's performance reaches its best.
After drying and curing, the PE protection film is cut using a cutting machine into finished products of different widths and lengths according to customer requirements. Finally, these finished products are packaged, ready for sale or shipment.
Throughout the entire production process, quality inspection is carried out continuously. From raw material inspection, production process monitoring to final product inspection, each step must strictly comply with national standards. This ensures that the performance, dimensions, appearance, and other indicators of the PE protection film meet customer requirements.
The production process of PE protection film may seem simple, but it contains a wealth of technical content. From raw material selection to finished product output, each step requires precise operations to ensure product quality. With continuous technological advancements, the production technology of PE protection film will continue to innovate, providing high-quality protective solutions for more industries.
