A PU film, in the context of a bending machine, refers to a Polyurethane film that is used as a bending aid or a protective layer during the bending process. Bending machines are commonly used in various industries, such as metal fabrication and sheet metal processing, to bend and shape materials like metal sheets or plates.
The PU film is typically placed between the material being bent and the clamping or bending tools in the machine. Its primary purpose is to prevent scratches, marks, or damage to the surface of the material during the bending process. The film acts as a cushioning layer that absorbs pressure and reduces friction between the material and the bending tools, ensuring a smooth and clean bend without marring the material's surface.
Using a PU film in a bending machine can enhance the quality of the finished product by preventing cosmetic defects caused by direct contact with the bending tools. It is particularly useful when working with sensitive materials like stainless steel, aluminum, or painted sheets, where surface damage must be minimized.
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