A metallized safety film

A metallized film, safe technology, used in fixed capacitor parts, fixed capacitor electrodes, wire wound capacitors, etc., can solve the problems of large capacitor capacity loss, shortened product life, large unit area, etc., and achieve small capacity loss. , long service life, small unit area effect

CN109243825APending Publication Date: 2019-01-18DELIXI ELECTRIC
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-01-18

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Abstract

The invention relates to a metallized safety film made by laminating and winding double-sided metallized film, the metallized thin film layer comprises a base film and a fully metallized conductive layer arranged on the base film, One side of the base film is provided with a reserved edge region, and the side opposite to the reserved edge region, of the base film is provided with a thickened region. The thickened region and the all-metallized conductive layer are spaced apart by an isolation region, and a conductive grid region is arranged on the upper part of the all-metallized conductive layer near the thickened region. Compared with the existing double-layer safety film winding, the utility rate of the base film is improved by 2.5%, the safety performance is improved, the high square resistance all-metallized conductive layer improves the self-healing property, the voltage resistance is high, the ripple resistance is strong, and the service life is long under the condition of the same safety performance.
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Description

technical field

[0001] The invention relates to the technical field of capacitors, in particular to a metallized safety film. Background technique

[0002] Chinese patent CN205264515U discloses a safe metallized film for capacitors, the metal layer is arranged on the upper surface of the dielectric layer, one end of the dielectric layer is provided with a margin, and one end of the metal layer is provided with a thickened layer; the middle of the metal layer is provided with longitudinal insulation The longitudinal insulating strip divides the metal layer into a fully metallized conductive layer and a partial metallized conductive layer; one end of the transverse insulating strip is connected to the longitudinal insulating strip, and the other end extends to the boundary of the partial metallized conductive layer; the transverse insulating strip is connected to the T-shaped insulating blocks, horizontal fuses are provided between the left and right adjacent T-shaped insulati...

Examples

Embodiment 1

[0024] A metallized security film such as Figure 4-6 , which is formed by stacking double-sided metallized film layers, refer to Figure 1-3 , the metallized film layer comprises a base film and a fully metallized conductive layer 4 located on the base film, a margin area 5 is provided on one side of the base film, and a thickened area 1 is provided on the opposite side of the base film to the margin area 5, The thickened region 1 and the fully metallized conductive layer 4 are separated by the isolation region 2, and the upper part of the fully metallized conductive layer 4 is provided with a conductive mesh region 3 near the thickened region 1, and the conductive mesh region 3 occupies Half of the fully metallized conductive layer 4 . The conductive grid area 3 is provided with a plurality of intersecting and vertical fuses. The fuses divide the conductive grid area 3 to form multiple square units. The fully metallized conductive layer 4 is obtained by evaporating metal al...

Embodiment 2

[0026] In this embodiment, the square resistance of the fully metallized conductive layer 4 is 100Ω / □, the square resistance of the evaporated conductive grid area 3 is 12Ω, and the thickened area 1 is obtained by evaporating metal aluminum or zinc on the base film, and the square resistance is 6Ω, all the other are the same as embodiment 1.

Embodiment 3

[0028] In this embodiment, the square resistance of the fully metallized conductive layer 4 is 50Ω / □, the square resistance of the evaporated conductive grid area 3 is 9Ω, and the thickened area 1 is obtained by evaporating metal aluminum or zinc on the base film, and the square resistance is 4Ω, all the other are the same as embodiment 1.