Analysis of the production process of polypropylene film used in metal film capacitors | Focus on mid-to-high-end brand capacitor manufacturers

Polypropylene film, also called PP film, is a non-toxic, odorless, odorless milky white highly crystalline organic polymer. It is widely used because of its low density, stable contact with water and low water absorption. Manufacturing metal film capacitors is one of its uses. Polypropylene is divided into a variety of manufacturing methods, including single-stretch PP film, biaxially stretched PP film, PP needle punched retina, PP isolation film, and PP tear film. The biaxially stretched PP film can be divided into flat film simultaneous two-way method, flat film stepwise two-way stretching method, bubble tube method and simultaneous two-way stretching method. The polypropylene film used in metal film capacitors is generally produced by the simultaneous biaxial stretching method using the bubble tube method. The polypropylene film used in metal film capacitors is mainly divided into two steps using this method: 1. First, make a thick tube with a thickness of about 0.7~0.8 mm. 2. Use compressed air for inflation, that is, horizontal stretching and vertical use of traction rollers. Stretch. For more details, please call 0755-85274135
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