CN202758750U

CN202758750U - Metallization film capacitor

Info

Publication number: CN202758750U
Application number: CN 201220361878
Authority: CN
Inventors: 陈重生
Original assignee: Yangzhou Rijing Electronic Co Ltd
Current assignee: Yangzhou Rijing Electronic Co Ltd
Priority date: 2012-07-24
Filing date: 2012-07-24
Publication date: 2013-02-27
Anticipated expiration: 2022-07-24

Abstract

The utility model relates to a metallization film capacitor, comprising a capacitor core and a wrapping adhesive tape. The capacitor core is formed by winding a medium film, and the wrapping adhesive tape is wrapped on the outside of the capacitor core; a layer of release agent is coated on the surface of the capacitor core, and the release agent is a silicon or fluorine. In order to avoid the situation that the wrapping adhesive tape is not attached to the capacitor core tightly, the coating range of the release agent is less than the range of the medium film; by coating the layer of release agent on the surface of the capacitor core, even though a metal spraying layer metal enters along with the gap of the wrapping adhesive tape and the capacitor core, the metal spraying layer metal is difficult to attach to the surface which is coated with the release agent; moreover, even though being attached to the surface, the metal spraying layer metal is easy to remove, thereby controlling the generation of undesirable metal spraying bridging effectively.

Description

A kind of metallic film capacitor

Technical field

The utility model relates to a kind of capacitor, especially relates to a kind of metallic film capacitor.

Background technology

General metallic film capacitor production technology; particularly take the PET(PETG) be dielectric material when producing; most diaphragms that all need to use the PET material; when metal spraying operates; the gilding layer metal can enter along with the gap between capacitor body and parcel adhesive tape, and it is bad to cause metal spraying to put up a bridge.

The utility model content

Technical problem to be solved in the utility model provides a kind of metallic film capacitor, can effectively control the bad generation of metal spraying bridging.

The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of metallic film capacitor, comprise capacitor body, parcel adhesive tape, capacitor body is comprised of around volume dielectric film, and parcel is carried secretly and is wrapped in the capacitor body outside, is coated with one deck release agent in the capacitor core sub-surface.Described release agent can be silicon or fluorine.Be the not close property of the fuse of avoiding wrapping up adhesive tape and capacitor, the scope of filming of release agent can be less than the scope of dielectric film.

The invention has the beneficial effects as follows: be coated with one deck coat in the capacitor core sub-surface, even the gilding layer metal is along with the gap between parcel adhesive tape and capacitor body enters into the inside, also be difficult to be attached to the surface that has been coated with release agent, even and above being attached to, also be easy to remove, thereby effectively controlled the bad generation of metal spraying bridging.

Description of drawings

Fig. 1 is the utility model metallic film capacitor release agent layout plan;

Fig. 2 is the utility model metallic film capacitor coating release agent width indication figure.

In the accompanying drawing, the list of parts of each label representative is as follows:

1, dielectric film, 2, diaphragm, 3, release agent, 4, the width of dielectric film, 5, the width of coating release agent.

Embodiment

Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used for explaining the utility model, is not be used to limiting scope of the present utility model.

As shown in Figure 1, dielectric film 1 and diaphragm 2 are wound into capacitor body, are coated with one deck release agent 3 in the capacitor core sub-surface, and release agent 3 is silicon or fluorine.Owing to be coated with one deck release agent 3 in the capacitor core sub-surface, even the gilding layer metal is along with the interval between parcel adhesive tape and the capacitor body enters into the inside, also be difficult to be attached to the capacitor core sub-surface that has been coated with release agent, even be attached to, also be easy to remove, thereby effectively control the bad generation of metal spraying bridging.

Fig. 2 is the utility model metallic film capacitor coating release agent width indication figure, and for avoiding wrapping up the not close property of adhesive tape and capacitor body, the width 5 of coating release agent is less than the width 4 of dielectric film.

The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims

1. a metallic film capacitor comprises capacitor body, parcel adhesive tape, and described capacitor body is formed around volume by dielectric film, and described parcel adhesive tape is wrapped in the capacitor body outside, and it is characterized in that: described capacitor core sub-surface has one deck release agent.

2. a kind of metallic film capacitor according to claim 1, it is characterized in that: described release agent is silicon or fluorine.

3. a kind of metallic film capacitor according to claim 1 and 2, it is characterized in that: the scope of filming of release agent is less than the scope of dielectric film.