Preparation method of metalized film of induction cooker capacitor

Abstract

The invention relates to the field of preparation of a capacitor, and in particular relates to a preparation method of a metalized film of an induction cooker capacitor. The preparation method comprises the following steps of: selection and preparation of raw materials, extruding a melt through an extruder, cooling the melt through a chilling roller and an air shower, drawing the melt in a vertical direction, drawing the melt in a transverse direction, testing the thickness of the drawn melt, performing procedures of trimming and corona treatment, rolling, time sequence treatment, slicing, and vacuum-evaporating the metalized film. Through the steps, the prepared metalized film is comparatively high in performance, comparatively low in rejection rate, low in cost and high in current carrying capability.

Description

technical field [0001] The invention relates to the field of capacitor preparation, in particular to a preparation method of a metallized film of an induction cooker capacitor. Background technique [0002] Electric appliances are very important in people's daily life. With the continuous improvement of people's living standards, induction cooker, as a household appliance, is easy to use and has a variety of kitchen functions, so it is welcomed by many families, and the market prospect is more and more broad. . The capacitor plays a very important role in the working of the induction cooker, so the capacitor is one of the key components of the induction cooker. interference effect. The capacitor core is the heart of the capacitor, so the material of the capacitor manufacturing core must have a high-frequency, high-temperature, high-current shock-resistant high-molecular polypropylene film as the medium, so as to ensure the long-term stable operation of the whole machine. ...

AI Technical Summary

Problems solved by technology

Since the whole machine in the market is oriented towards ultra-thin and micro-miniature development, although the foil film composite material has a strong current-carrying and electric resistance capability, its disadvantage is that it is large in size and is not conducive to the use of the whole machine. Another disadvantage is that polypropylene film and aluminum foil Composite rolling and other processes are difficult to control, especially in the process of winding the core, due to the difference in hardness and toughness of the two materials, there will be gaps between the film and foil, so that the heat shrinkage of the material is not sufficient when setting the shape, resulting in a gap between the film and foil. It is easy to be broken down by electricity, and the scrap rate is high, resulting in waste of cost

And because the raw material impurity that selects when the prior art prepares capacitor metallization film is more, so can cause the performance of the capacitor metallization film that produces is relatively poor, and because prior art prepares capacitor metallization film when longitudinal and transverse stretching process The setting of various parameters is not good, so it is likely to cause the film to break, and the film rupture will affect the normal production