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Anti-peeling polypropylene metallized film preparing process

A technology of polypropylene film and metallized film, which is applied in the field of capacitors, can solve the problems of weak adhesion between polypropylene film and metal coating, affect the service life of capacitors, and the metal coating is easy to be broken down, so as to improve the bonding strength and improve the use The effect of reducing the chance of life and separation

Active Publication Date: 2017-01-11
TONGLING CHAOYUE ELECTRON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polypropylene metallized film is made of aluminum and zinc metal wires on polypropylene film by vacuum evaporation technology. In the existing polypropylene metallized film, because the working surface of polypropylene film is only treated with corona discharge, polypropylene The adhesion between the film and the metal coating is weak. During the winding process of the capacitor and the use of the capacitor, the metal coating is easy to separate from the polypropylene film, which leads to the breakdown of the metal coating and affects the service life of the capacitor. The bonding strength between the coatings will also decrease with the use of the capacitor, so improving the bonding strength between the polypropylene film and the evaporated metal coating can effectively increase the service life of the capacitor

Method used

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  • Anti-peeling polypropylene metallized film preparing process
  • Anti-peeling polypropylene metallized film preparing process
  • Anti-peeling polypropylene metallized film preparing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] After the corona discharge treatment is carried out on the working surface of the polypropylene film, the process condition of the corona discharge treatment is 30~35J / cm 2 . Then the polypropylene film is subjected to heat-drawing process sequentially. The heat-drawing process is as follows: the polypropylene film is sent into the treatment tank, and the amyl alcohol solution of the titanate coupling agent is continuously introduced into the treatment tank, and the titanate coupling agent is The mass fraction of the amyl alcohol solution is 12.5%~13.5%, the temperature of the amyl alcohol solution of the titanate coupling agent is 125~135°C, and the polypropylene film is stretched at a rate of 20~22mm / min by 109%~112 %; and then dry the polypropylene film with hot air at 90~95°C. The polypropylene film is subjected to the cold drawing process after the hot drawing process. The cold drawing process is: the polypropylene film is stretched by 100.6%~101.3% at a rate of 0...

Embodiment 2

[0022] After the corona discharge treatment is carried out on the working surface of the polypropylene film, the process condition of the corona discharge treatment is 33J / cm 2 . Then the polypropylene film is subjected to heat-drawing process sequentially. The heat-drawing process is as follows: the polypropylene film is sent into the treatment tank, and the amyl alcohol solution of the titanate coupling agent is continuously introduced into the treatment tank, and the titanate coupling agent is The mass fraction of the amyl alcohol solution is 13.1%, the temperature of the amyl alcohol solution of the titanate coupling agent is 129°C, and the polypropylene film is stretched by 111% at a rate of 21mm / min; The polypropylene film was blown dry. The polypropylene film is subjected to a cold drawing process after being processed by a hot drawing process. The cold drawing process is as follows: the polypropylene film is stretched by 100.9% at a rate of 0.5mm / min at room temperatu...

Embodiment 3

[0029] After the corona discharge treatment is carried out on the working surface of the polypropylene film, the process condition of the corona discharge treatment is 35J / cm 2 . Then the polypropylene film is subjected to heat-drawing process sequentially. The heat-drawing process is as follows: the polypropylene film is sent into the treatment tank, and the amyl alcohol solution of the titanate coupling agent is continuously introduced into the treatment tank, and the titanate coupling agent is The mass fraction of the pentanol solution is 13.5%, the temperature of the pentanol solution of the titanate coupling agent is 135°C, and the polypropylene film is stretched by 112% at a rate of 22mm / min; The polypropylene film was blown dry. The polypropylene film is subjected to a cold drawing process after being processed by a hot drawing process. The cold drawing process is as follows: the polypropylene film is stretched by 101.3% at a rate of 0.8mm / min at room temperature.

[...

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Abstract

The invention relates to an anti-peeling polypropylene metallized film preparing process. A working face of a polypropylene film is sequentially subject to brush discharge treatment, hot-drawn process treatment and cold-drawn process treatment; then the polypropylene film is fed into a vacuum coating machine, aluminum wires are fed into an evaporation crucible through a wire feeding mechanism in the vacuum coating machine, and the aluminum wires become aluminum steam from an aluminum solution in the evaporation crucible; the polypropylene film is subject to vacuum evaporation operation in a coating chamber to prepare a raw material film; and the raw material film is slit to prepare an anti-peeling polypropylene metallized film. The roughness of the working face of the polypropylene film is obviously improved, the bonding strength of the working face of the polypropylene film and an aluminum coating layer is obviously improved, the possibility of separation of the aluminum coating layer and the polypropylene film is reduced, and the service life of metallized film capacitors is effectively prolonged.

Description

technical field [0001] The invention relates to a processing technology of an anti-peeling polypropylene metallized film, which belongs to the technical field of capacitors. Background technique [0002] Polypropylene metallized film is made of aluminum and zinc metal wires on polypropylene film by vacuum evaporation technology. In the existing polypropylene metallized film, because the working surface of polypropylene film is only treated with corona discharge, polypropylene The adhesion between the film and the metal coating is weak. During the winding process of the capacitor and the use of the capacitor, the metal coating is easy to separate from the polypropylene film, which leads to the breakdown of the metal coating and affects the service life of the capacitor. The bonding strength between the coatings will also decrease with the use of the capacitor, so improving the bonding strength between the polypropylene film and the evaporated metal coating can effectively inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/02C23C14/24C23C14/20H01G4/33H01G4/015
CPCC23C14/02C23C14/20C23C14/24H01G4/015H01G4/33
Inventor 刘同林
Owner TONGLING CHAOYUE ELECTRON CO LTD
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