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Method of separating high-molecular film from liquid crystal glass through microwave heating

A liquid crystal glass, polymer film technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of slow heat transfer effect of glass, long processing time, high processing cost, and achieve low microwave processing cost, short cooling time, The effect of short processing time

Inactive Publication Date: 2015-11-04
FAR EAST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method of early treatment is to heat the waste liquid crystal glass to burn and remove the polarizing film. In addition to the slow heat transfer effect of the glass and the long processing time, the waste gas generated by the burning of the polarizing film also needs to be treated to avoid Pollution of the air, plus carbon residues are likely to remain on the glass surface, so the treatment cost is high
Furthermore, the polarizing film is generally made of PET, which is a high-value plastic, and it cannot be recycled and reused if it is directly burned and removed.
[0004] Among them, China Taiwan Invention Patent No. 527232 discloses a method for removing the polarizing film in the open literature of the waste liquid crystal display resource recycling device and method, which can solve the aforementioned problem of burning the polarizing film to generate waste gas. The glass of the display is precisely cut, the liquid crystal material is separated by ultrasonic vibration and soaked in alcohol solvent, and then incinerated, the remaining glass sheet with polarizing film is heated to 150°C, and the indium titanium oxide conductive glass substrate heated for a period of time is impregnated in After immersing the tank in temperature-insulated liquid nitrogen, the polarizing film below it will fall off; since the overall heating of the polarizing film will soften it, the viscosity attached to the glass will be higher, so the viscous substance on the polarizing film has not yet completely Drying and solidification, using the effect of rapid cooling after heating, the viscous substance of the polarizing film cannot be firmly bonded to the glass and is easy to peel off
However, the above method takes a long time to process, and the liquid crystal glass needs to be immersed in liquid nitrogen, and the required processing cost is also high.

Method used

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  • Method of separating high-molecular film from liquid crystal glass through microwave heating
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  • Method of separating high-molecular film from liquid crystal glass through microwave heating

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Embodiment Construction

[0029] Based on the above-mentioned technical features, the main functions of the method of microwave heating and separating the polymer film of liquid crystal glass of the present invention will be clearly presented in the following examples.

[0030] see figure 1 and figure 2 As shown, in this embodiment, a microwave is applied on a liquid crystal glass panel 1 to remove a polymer film on the liquid crystal glass panel 1. In this embodiment, the polarizing film 2 is taken as an example, wherein the polarizing film 2 passes through a joint Layer 3 is combined on the liquid crystal glass panel 1, and the bonding layer 3 is, for example, glue:

[0031] A. The power of the microwave acting on the liquid crystal glass panel 1 is between 800 watts and 1000 watts, and the microwave action time is between 10 seconds and 40 seconds; preferably, the microwave power is 900 watts, and the microwave action time is 30 seconds . In this embodiment, the liquid crystal glass panel 1 with...

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Abstract

The present invention relates to a Method of separating high-molecular film from liquid crystal glass through microwave heating, In this method, when microwaves are applied at the time of an LCD glass panel, the microwave selectively acting on a conductor in the liquid crystal panel glass to produce a thermal reaction, so that a polymer film on the LCD glass panel (for example, a polarizing film) to reduce the degree of engagement of the liquid crystal glass panel, so that the polymer film is easy to be removed from the LCD glass panel.

Description

technical field [0001] The present invention relates to a method for microwave heating to separate the polymer film of liquid crystal glass, especially refers to the method of using microwave heating to reduce the bonding degree between the polymer film and the liquid crystal glass panel, so as to be easy to remove from the liquid crystal glass panel . Background technique [0002] Liquid crystal display is the fastest growing and most commonly used display at present. With the gradual emergence of the obsolete trend, in order to avoid environmental hazards caused by waste liquid crystal glass, it is more important to recycle waste liquid crystal glass. [0003] An important step in the recycling of waste liquid crystal glass is to remove the polymer film attached to the liquid crystal glass panel, such as polarizing film. The method of early treatment is to heat the waste liquid crystal glass to burn and remove the polarizing film. In addition to the slow heat transfer eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13
CPCG02F1/13G02F1/133334
Inventor 王振兴
Owner FAR EAST UNIVERSITY
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