Simple understanding of the process of polypropylene film on metal film capacito

There are many types of metal film capacitors, and there are many materials for the manufacturing process, such as polyethylene, polypropylene, polystyrene or polycarbonate. So what about the process of polypropylene film on metal film capacitors?

Polypropylene film, also known as PP film, is a non-toxic, odorless, odorless, milky white, high crystalline organic polymer. It has a low density, stable water resistance and low water absorption, and is widely used in the manufacture of metal film capacitors. The method of using polypropylene film on metal film capacitors is mainly divided into two steps:

1. First make a thick tube with a thickness of about 0.7~0.8 mm.

2. Use compressed air for inflation, that is, transverse stretching while stretching longitudinally using a pulling roller.

Polypropylene has a variety of production methods, including a single stretch PP film, biaxially stretched PP film, PP needled web, PP separator, PP tear film. The biaxially stretched PP film can be further divided into a flat film simultaneous bidirectional method, a flat film stepwise biaxial stretching method, and a bubble tube method simultaneous biaxial stretching method. The polypropylene film used for the metal film capacitor is generally produced by a two-way stretching method using a bubble tube method.

The above is the process of polypropylene film on the metal film capacitor, I hope to help you. With the development of technology, the sales of metal film capacitors have been rising steadily in recent years. At the time of purchase, we must also pay attention to the quality of products to ensure the safe use of components.