Breathable PE (polyethylene) film is a commonly used material in the production of hygiene products, such as disposable diapers, sanitary napkins, and adult incontinence products. The process of manufacturing breathable PE Film involves several steps.
1. Polymerization: The first step in the process is the polymerization of ethylene monomers to produce polyethylene resin. This is typically done using a high-pressure or low-pressure polymerization process, depending on the desired properties of the film.
2. Blending: Once the polymerization is complete, the polyethylene resin is often blended with other additives to improve the film's performance. These additives can include fillers, plasticizers, stabilizers, and pigments. The specific additives used will depend on the desired properties of the final product.
3. Extrusion: The blended polyethylene resin is then melted and extruded through a die to form a continuous film. This extrusion process involves heating the resin to a specific temperature and pressure and passing it through a narrow opening to create a flat or tubular film.
4. Calendering: To achieve the desired thickness and smoothness of the film, it may undergo a calendering process. Calendering involves passing the film through a series of heated rollers, which can compress and stretch the film to achieve the desired properties.
5. Breathability Treatment: The key feature of Breathable PE Film is its ability to allow air and moisture vapor to pass through while preventing liquid from penetrating. To achieve this breathability, the film undergoes a breathability treatment. This treatment typically involves creating micropores or microperforations in the film using various techniques such as mechanical punching, laser drilling, or chemical etching. These micropores allow air and moisture vapor to pass through the film while blocking liquid.
6. Finishing: After the breathability treatment, the film may undergo additional finishing processes to enhance its performance. This can include treatments to improve the film's softness, flexibility, or antibacterial properties. The film may also be printed with necessary information or branding.
7. Quality Control: Throughout the production process, quality control measures are implemented to ensure that the film meets the required specifications. This may include testing the film for thickness, breathability, tensile strength, and other properties. Samples from each production batch are often tested to ensure consistency and reliability of the final product.
Once the breathable pe film is produced, it can be further processed and integrated into the manufacturing of hygiene products. It can be laminated with other materials, such as nonwoven fabrics, to create a composite structure that offers a combination of breathability, flexibility, and liquid resistance.
Overall, the production process of breathable PE Film involves several steps, from polymerization to finishing, to create a material that is essential for the performance and comfort of hygiene products.
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