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Double-sided aluminum metallized polypropylene film and preparation method thereof and capacitor core

A technology of polypropylene film and aluminum metallization, which is applied in the field of capacitors to achieve uniform aluminum metallization layer, long service life and good effect

Inactive Publication Date: 2020-01-14
ZHEJIANG QIXING CAPACITOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The second object of the present invention is to provide a method for preparing a double-sided aluminum metallized polypropylene film, which solves the problem of vapor-depositing and condensing a layer of aluminum metal on both sides of the polypropylene film, and has uniform evaporation Advantages of Aluminum Metallization

Method used

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  • Double-sided aluminum metallized polypropylene film and preparation method thereof and capacitor core
  • Double-sided aluminum metallized polypropylene film and preparation method thereof and capacitor core
  • Double-sided aluminum metallized polypropylene film and preparation method thereof and capacitor core

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Effect test

Embodiment 1

[0043] Embodiment 1: refer to figure 1, is a double-sided aluminum metallized polypropylene film disclosed by the present invention, comprising a polypropylene base film 1 and two pairs of aluminum metallized layers 2 respectively attached to the surface of the polypropylene base film 1, that is, one pair of aluminum metallized layers The layer 2, the polypropylene base film 1 and another pair of aluminum metallization layers 2 are arranged side by side closely in sequence. In addition, the outer edge of the aluminum metallization layer 2 is flush with the side edge of the polypropylene base film 1 , and the strip-shaped space between the aluminum metallization layers 2 on the same surface of the polypropylene base film 1 forms a middle margin 3 .

[0044] The double-sided aluminum metallized polypropylene film 6 has a total thickness of 4.6 μm-5.0 μm and a total width of 21.8 mm-22.2 mm. The width of the middle margin 3 is 2.8mm-3.2mm. The aluminum metallization layer 2 has...

Embodiment 2

[0045] Embodiment 2: refer to figure 2 , is the preparation method of a kind of double-sided aluminum metallized polypropylene film disclosed by the present invention, is used for preparing the double-sided aluminum metallized polypropylene film 6 of embodiment 1, comprises the following steps: the first pre-installation, the first time Vacuum evaporation, second pre-installation, corona on non-corona surface, second vacuum evaporation, semi-finished product inspection, aging and slitting, post-processing.

[0046] (1) Pre-installation for the first time

[0047] The polypropylene base film 1 is sent into the vacuum winding chamber by a crane, and installed on the machine unwinding roller, so that the first corona surface of the polypropylene base film 1 is exposed. Then the pressing roller presses the four edges of the polypropylene base film 1, and closes the vacuum winding chamber. Finally, the vacuum pump works to evacuate the inside of the vacuum winding chamber, and t...

Embodiment 3

[0072] Embodiment 3: refer to image 3 , is a capacitor core disclosed by the present invention, comprising a pair of single-sided metallized polypropylene films 4 arranged side by side, a polypropylene optical film 5 arranged between the single-sided metallized polypropylene films 4 and double-sided aluminum metal Thin polypropylene film6. Among them, the single-side metallized polypropylene film 4 , the polypropylene light film 5 , the double-side aluminum metallized polypropylene film 6 and the single-side metallized polypropylene film 4 are arranged side by side in sequence. The single-sided metallized polypropylene film 4 is the single-sided metallized polypropylene film 4 with the middle edge 3, and the double-sided aluminum metallized polypropylene film 6 is the double-sided aluminum metal with the middle edge 3 described in embodiment 1. Thin polypropylene film6.

[0073] In addition, the width of the double-sided aluminum metallized polypropylene film 6 is greater t...

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Abstract

The invention relates to a double-sided aluminum metallized polypropylene film and a preparation method thereof and a capacitor core. The double-sided aluminum metallized polypropylene film includes apolypropylene base film and two pairs of aluminum metallized layers. The preparation method of the double-sided aluminum metallized polypropylene film includes the steps of first vacuum evaporation,non-corona surface corona, second vacuum evaporation and post-treatment. The capacitor core includes a pair of single-sided metallized polypropylene film, a polypropylene light film and the double-sided aluminum metallized polypropylene film. The double-sided aluminum metallized polypropylene film has the advantage of improving the voltage resistance of the film; in addition, the preparation method has the advantage of uniformly vaporizing the aluminum metallized layers on both surfaces of the polypropylene film; and the capacitor core has the advantage of improving the thermal polymerizationeffect.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to a double-sided aluminum metallized polypropylene film, a preparation method thereof and a capacitor core. Background technique [0002] At present, the overall scale of my country's film capacitor market is relatively small, and the film capacitor industry has developed rapidly in recent years, especially the downstream demand market has grown rapidly. In recent years, the system and weight of capacitors have been reduced by 3-4 times. At the same time, the coating technology and segmentation technology of metallized films have been improved, which has greatly helped the development of film capacitors. In the field of double-sided vapor-deposited metallized films, capacitors made of this type of film have occupied more and more markets due to their small size, large capacity, good stability, and strong self-healing ability. However, due to the difficulty of the coating proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/02C23C14/20C23C14/24H01G4/02H01G4/33
CPCC23C14/022C23C14/20C23C14/24H01G4/02H01G4/33
Inventor 韩秋城古骏杨峰
Owner ZHEJIANG QIXING CAPACITOR
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