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Double-faced metalized electrical membrane for capacitor

A double-sided metal, capacitor technology, applied in the direction of fixed capacitor electrodes, fixed capacitor dielectrics, metal material coating processes, etc., can solve problems such as limitations and difficult to control thermal deformation of electrical films, maintain good flatness, and solve difficult control problems. Thermal deformation, the effect of avoiding differences in capacity

Inactive Publication Date: 2015-09-09
ZHEJIANG QIXING CAPACITOR
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  • Abstract
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  • Claims
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Problems solved by technology

Considering that the electrical film market is getting bigger and bigger, but due to the difficulty in controlling the thermal deformation of the electrical film, it is greatly restricted in practical applications

Method used

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  • Double-faced metalized electrical membrane for capacitor

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Embodiment Construction

[0013] like figure 1 Shown, be the capacitor double-sided metallized electrical film embodiment 1 of the present invention, by the polyethylene terephthalate medium layer 1 and vapor deposition on the said polyethylene terephthalate medium layer 1 surface The aluminum layer 2 is composed of the aluminum layer 2, and the upper and lower surfaces of the polyethylene terephthalate dielectric layer 1 are evaporated with the aluminum layer 2. The surface of the aluminum layer 2 is provided with mutually parallel grooves 3 at intervals, and the grooves 3 extend from the surface of the aluminum layer 2 to the surface of the polyethylene terephthalate medium layer 1 . The thickness of the polyethylene terephthalate medium layer 1 is 4.8 μm. The thickness of the aluminum layer 2 is 3 μm.

[0014] The metallized electrical film on both sides of the capacitor in this embodiment adopts high-vacuum metal deposition technology. Under high-vacuum conditions, the metal material to be deposi...

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Abstract

The invention discloses a double-faced metalized electrical membrane for a capacitor and belongs to the technical field of electrical membrane. With the adoption of a high vacuum metal deposition technology, a very thin and uniform metal film can be obtained, the uniform metal film provides guarantee for a good capacitance performance, and differences in capacity of capacitors and inconsistence of sizes of coiled capacitor bodies can be prevented. In addition, as the vapor-plated metal film is very thin, the good smoothness of a film dielectric layer in the vapor plating process can be maintained, and the technical problem that thermal deformation is difficult to control in the prior art can be effectively solved. The double-faced metalized electrical membrane for the capacitor provided by the invention is composed of a polyethylene glycol terephthalate dielectric layer and an aluminium layer vapor plated on the polyethylene glycol terephthalate dielectric layer, grooves are parallelly arranged in the aluminium layer at intervals, and the thickness of the aluminium layer is of 2-3.5[mu]m.

Description

technical field [0001] The invention belongs to the technical field of electrical films and relates to a double-sided metallized electrical film for capacitors. Background technique [0002] my country has introduced nearly a hundred vacuum coating production lines from abroad, most of which are general coating equipment. In the field of electrical film metallization, due to the difficulty of the coating process and slitting process, the yield rate is difficult to control, and domestic enterprises rarely set foot in it. Capacitors made of this type of film are increasingly occupying the market due to their advantages of large capacity, good stability, and strong self-healing ability. Considering that the electrical film market is getting bigger and bigger, but due to the difficulty in controlling the thermal deformation of the electrical film, it is greatly restricted in practical application. Contents of the invention [0003] The technical problem to be solved by the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/14H01G4/005C23C14/20C23C14/24
Inventor 陈杰
Owner ZHEJIANG QIXING CAPACITOR
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