Film with anti-oxidation property

Abstract

According to the film with the antioxidant property provided by the utility model, when the first metallized film and the second metallized film are laminated and wound, the first metallized film and the second metallized film respectively seal a gap between the core and the base layer, namely a blank area is sealed, so that external water vapor and air can be effectively isolated, and the service life of the film is prolonged. Therefore, the capacitor is protected, the oxidation phenomenon is avoided, and the service life of the capacitor is greatly prolonged. Anti-oxidation films are arranged on the outer surfaces of the first metallized film and the second metallized film, so that the outer surfaces of the first metallized film and the second metallized film can be further isolated from external water vapor and air by the anti-oxidation films, and oxidation is avoided; meanwhile, the drying layer is arranged in the blank area, the drying layer is filled with the drying agent, the drying agent can be chemical drying agents such as calcium sulfate and calcium chloride, water vapor in the air is further absorbed, and oxidation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to capacitor metallized film technical field, especially relate to a film with anti -oxidation attribute. BACKGROUND

[0002] The metallized film for capacitor is that zinc, aluminum and other metals are deposited on the organic dielectric film by physical vapor deposition method to form a metallized layer, thereby obtaining the metal plate in the capacitor structure. The structure of the metallized layer, especially the thickness, is related to the working voltage, ESR, loss, service life and other performances of the capacitor after the metallized film capacitor is made, so the thickness control of the metallized layer is the key point of the preparation of the metallized film for capacitor.

[0003] Through the search, the patent of China CN207149416U discloses an anti-oxidation capacitor film, which comprises a film base body, a first metal plating layer evaporated on the film base body, a thickening area arranged on one side of the first metal plating layer, a left edge blank area arranged on the other side of the film base body opposite to the thickening area, a second metal plating layer evaporated on the left edge blank area, and a spacing L arranged between the left edge blank area and the second metal plating layer. When the first metal plating layer and the second metal plating layer are stacked and wound, the first metal plating layer and the second metal plating layer seal the gap between the core and the film base body, which can effectively isolate the external water vapor and air, thereby protecting the capacitor and avoiding oxidation, and greatly prolonging the service life of the capacitor. The left edge blank area is used to isolate the first metal plating layer and the second metal plating layer, and prevent short circuit caused by contact between the two plating layers.

[0004] The above-mentioned patent still has the following disadvantages: the metallized film wound in the capacitor will be in contact with air due to the heat dissipation holes and other factors, which will form an oxidation layer on the surface of the metallized film. The metallized film itself is relatively thin, which will reduce the conductivity of the metallized film. The metallized film is in contact with air for a long time, and the surface of the metallized film is also prone to corrosion. Therefore, the utility model provides a film with anti-oxidation property to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] The utility model provides a film with anti-oxidation property, which aims at solving the problems in the background art.

[0006] The utility model is implemented as follows: a film with anti-oxidation property, comprising a base layer;

[0007] The top surface of the base layer is evaporated with a first metallized film, one side of the first metallized film is provided with a blank area, the side of the blank area away from the first metallized film is provided with a second metallized film, the outer surfaces of the first metallized film and the second metallized film are provided with an anti-oxidation film, and a drying layer is arranged between the first metallized film and the second metallized film.

[0008] Preferably, the first metallized film is consistent in thickness with the second metallized film.

[0009] Preferably, the anti-oxidation film is a chromium oxide film.

[0010] Preferably, the anti-oxidation film has a thickness of 3-15 microns.

[0011] Preferably, the dry layer has a thickness less than the first metallized film.

[0012] Compared with the prior art, the present application has the following beneficial effects:

[0013] When the first and second metallized films are laminated and wound, the first and second metallized films seal the gap between the core and the base layer, i.e. the blank area is sealed, which can effectively isolate the external moisture and air, thereby protecting the capacitor and avoiding oxidation, greatly extending the service life of the capacitor; and the outer surfaces of the first and second metallized films are provided with anti-oxidation films, which can further isolate the external moisture and air from the outer surfaces of the first and second metallized films, avoiding oxidation; meanwhile, the blank area is provided with a dry layer, and the dry layer is filled with a drying agent, such as calcium sulfate and calcium chloride, which can further absorb the moisture in the air, avoiding oxidation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view of the overall structure of the present application.

[0015] In the drawings:

[0016] 1, base layer; 2, first metallized film; 3, second metallized film; 4, anti-oxidation film; 5, blank area; 6, dry layer. DETAILED DESCRIPTION

[0017] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings, obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0018] The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0019] Based on the embodiments of the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the range of the utility model protection.

[0020] In the description of the utility model, it is to be explained that, the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as the restriction on the utility model. In addition, the terms "first", "second", "third" are only for the description purpose, and cannot be understood as indicating or implying the relative importance.

[0021] In the description of the utility model, it is to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integrally connected, can be mechanical connection, or electrical connection, can be directly connected, or indirectly connected through intermediate medium, can be the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] Please refer to Figure 1 The utility model provides a technical scheme: a film with antioxidant property, including base layer 1, the top surface of base layer 1 is evaporated with first metallized film 2, one side of first metallized film 2 is equipped with blank area 5, the side away from first metallized film 2 of blank area 5 is equipped with second metallized film 3, the outer surface of first metallized film 2 and second metallized film 3 is equipped with antioxidant film 4, and dry layer 6 is equipped between first metallized film 2 and second metallized film 3.

[0023] In the embodiment, when first metallized film 2 and second metallized film 3 are laminated and wound, first metallized film 2 and second metallized film 3 seal the gap between the core and base layer 1 respectively, that is, blank area 5 is sealed, which can effectively isolate the external moisture and air, thereby playing a role in protecting the capacitor and avoiding oxidation, greatly prolonging the service life of the capacitor. And the outer surface of first metallized film 2 and second metallized film 3 is equipped with antioxidant film 4, which can further isolate the external moisture and air of the outer surface of first metallized film 2 and second metallized film 3, avoiding oxidation. Meanwhile, dry layer 6 is arranged in blank area 5, the inside of dry layer 6 is filled with drying agent, and the drying agent can be selected from chemical drying agents such as calcium sulfate and calcium chloride, which further absorbs the moisture in the air to avoid oxidation.

[0024] Further, referring to Figure 1 , the first metallized film 2 and the second metallized film 3 have the same thickness.

[0025] In the embodiment, the first metallized film 2 and the second metallized film 3 have the same thickness, so that the first metallized film 2 and the second metallized film 3 can be laminated and wound.

[0026] Further, the oxidation-resistant film 4 is a chromium oxide film.

[0027] In the embodiment, the oxidation-resistant film 4 is a chromium oxide film, which can not only prevent the first metallized film 2 and the second metallized film 3 from contacting air and water vapor, and play a role in preventing oxidation and corrosion, but also further prevent the surface of the first metallized film 2 and the second metallized film 3 from being scratched.

[0028] Further, the thickness of the oxidation-resistant film 4 is 3-15 microns.

[0029] In the embodiment, the thickness of the oxidation-resistant film 4 is 3-15 microns, which is not too thick or too thin, and can play a role in preventing oxidation and corrosion.

[0030] Further, referring to Figure 1 , the thickness of the dry layer 6 is lower than the thickness of the first metallized film 2.

[0031] In the embodiment, the thickness of the dry layer 6 is lower than the thickness of the first metallized film 2, so that the blank area 5 is still retained, and the working of the capacitor is avoided from being affected.

[0032] The working principle and use process of the utility model are as follows: when the first metallized film 2 and the second metallized film 3 are laminated and wound, the first metallized film 2 and the second metallized film 3 seal the gap between the core and the base layer 1 respectively, that is, the blank area 5 is sealed, which can effectively isolate the external water vapor and air, thereby playing a role in protecting the capacitor and avoiding oxidation, and greatly prolonging the service life of the capacitor; and the outer surfaces of the first metallized film 2 and the second metallized film 3 are both provided with the oxidation-resistant film 4, the oxidation-resistant film 4 can further isolate the external water vapor and air from the outer surfaces of the first metallized film 2 and the second metallized film 3, and avoid oxidation; and the dry layer 6 is arranged in the blank area 5, the dry layer 6 is filled with a drying agent, and the drying agent can be selected from chemical drying agents such as calcium sulfate and calcium chloride, which can further absorb water vapor in the air and avoid oxidation.

[0033] The above only describes the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A film having antioxidant properties, characterized by: It comprises a base layer (1); The top surface of the base layer (1) is evaporated with a first metalized film (2), one side of the first metalized film (2) is provided with a blank area (5), the side of the blank area (5) away from the first metalized film (2) is provided with a second metalized film (3), the outer surfaces of the first metalized film (2) and the second metalized film (3) are provided with an oxidation-resistant film (4), and a dry layer (6) is arranged between the first metalized film (2) and the second metalized film (3).

2. The film having antioxidant properties according to claim 1, wherein: The first metalized film (2) is consistent with the second metalized film (3) in thickness.

3. The film with antioxidant properties according to claim 1, characterized in that: The oxidation-resistant film (4) is a chromium oxide film.

4. The film with antioxidant properties according to claim 3, characterized in that: The thickness of the oxidation-resistant film (4) is 3-15 microns.

5. The film with antioxidant properties according to claim 2, characterized by: The thickness of the dry layer (6) is lower than that of the first metalized film (2).

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