Vacuum coating method of protective film

A technology of vacuum coating and protective film, applied in vacuum evaporation coating, superimposed layer coating, sputtering coating and other directions, can solve the problems of large consumption of materials and energy, high cost, troublesome steps and procedures, etc., to improve production Efficiency, Density Improvement, and Bonding Effects

Active Publication Date: 2014-05-07
北京三重镜业(大厂)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some metals are very active metals, such as aluminum, iron, magnesium, etc., when they are applied to the reflector cup, they need a strong reflective rate, but if the protective film is prepared by traditional spraying or dipping, when the metal film is in the The moment the vacuum chamber is deflated and opened, the surface of the metal film will be oxidized by the oxygen in the air, and it usually takes several minutes to several hours to spray or dip the transparent paint after the film is coated, which will further deteriorate the surface of the metal film
[0004] 2. High cost
Whether it is spraying or dipping, a large amount of paint is required, and it must be cured by heat or light, which will consume a lot of materials and energ

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In this embodiment, a protective film is coated on the surface of the aluminum film, and the specific steps are as follows:

[0043] Step 1: Vacuuming: Place the product to be coated in a vacuum chamber, and then vacuumize to 6*10 -2 Pa, while heating to 95-100°C to make the upper layer of the container form water vapor.

[0044] Step 2: Aluminized film: Before the aluminized film, the independent shafts of the vacuum chamber start to rotate synchronously. The first step is to preheat to 80°C for 30-35 seconds. The second step is to pre-melt, and the temperature is raised to 250°C to maintain 10-15 seconds, let the aluminum wire reach the molten state. The third step is to evaporate for 3-5 seconds, further increase the voltage of the tungsten wire, increase the current of the tungsten wire until the temperature reaches above 700°C, make the tungsten wire into a hot state, and the liquid aluminum on it becomes a gaseous molecule and evaporates into the rotating produc...

Embodiment 2

[0049] In this embodiment, a protective film is coated on the surface of the aluminum film, and the specific steps are as follows:

[0050] Step 1: Vacuuming: Place the product to be coated in a vacuum chamber, and then vacuumize to 10*10 -2 Pa, while heating to 105°C to make the upper layer of the container form water vapor.

[0051] Step 2: Aluminized film: Before the aluminized film, the independent shafts of the vacuum chamber start to rotate synchronously. The first step is to preheat to 100°C for 36-40 seconds. The second step is to pre-melt, and the temperature is raised to 280°C to maintain 16-20 seconds, let the aluminum wire reach the molten state. The third step is to evaporate for 3-5 seconds, further increase the voltage of the tungsten wire, increase the current of the tungsten wire until the temperature reaches above 700°C, make the tungsten wire into a hot state, and the liquid aluminum on it becomes a gaseous molecule and evaporates into the rotating product ...

Embodiment 3

[0056] In this embodiment, a protective film is coated on the surface of the aluminum film, and the specific steps are as follows:

[0057] Step 1: Vacuuming: Place the product to be coated in a vacuum chamber, and then vacuumize to 5*10 -3Pa, while heating to 115°C to make the upper layer of the container form water vapor.

[0058] Step 2: Aluminum-coated film: Before the aluminum-coated film, the independent rotating shafts of the vacuum chamber start to rotate synchronously. The first step is preheating to 120°C for 41-45 seconds. The second step is pre-melting, and the temperature is raised to 300°C for holding 21-25 seconds, let the aluminum wire reach the molten state. The third step is to evaporate for 3-5 seconds, further increase the voltage of the tungsten wire, increase the current of the tungsten wire until the temperature reaches above 700°C, make the tungsten wire into a hot state, and the liquid aluminum on it becomes a gaseous molecule and evaporates into the ...

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PUM

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Abstract

The invention relates to the technical field of coating metal films with protective films, and specifically relates to a vacuum coating method of a protective film. The vacuum coating method of the protective film comprises the following preparation steps of 1, vacuumizing, namely putting a product to be coated in a vacuum chamber, and then vacuumizing, and heating simultaneously so that water vapor is formed on the upper layer of a container; 2, plating a metal film, namely plating a metal film through an evaporative metal film coating process; 3, introducing air after finishing coating of the metal film, namely, turning off a diffusion pump, turning on a molecular grating, charging air into the vacuum chamber through a flowmeter and stabilizing the degree of vacuum and keeping for 0.2-1 minutes; 4, cleaning the surface of the metal film, namely starting an ion bombardment power source; and 5, plating the protective film, including charging liquid vapor of organic silicon, keeping the pressure unchanged, and starting the ion bombardment power source again so that the organic silicon grows on the metal film layer by layer to form the protective film. The vacuum coating method of the protective film has the characteristics of high production efficiency and low cost, and the protective film is good in compactness, strong in protection performance and wide in application range.

Description

technical field [0001] The invention relates to the technical field of coating a protective film on a metal film, in particular to a vacuum coating method for a protective film. Background technique [0002] Vacuum coating can deposit thin films of metals, semiconductors, insulators, alloys with different composition ratios, compounds and some organic polymers on the surfaces of metals, semiconductors, insulators, plastics, paper, fabrics, etc., and has a wide range of applications. However, the surface chemical properties of the metal film are relatively unstable, and are easily affected by the environment, and are prone to yellowing, blackening, chapping, fogging, whitening and other adverse conditions. Therefore, it is generally necessary to coat a protective film on the metal film. The traditional protective film coating adopts evaporation plating or electron gun plating of SiO2. 2 、AL 2 o 3 And other materials, using physical vapor deposition technology, which is a p...

Claims

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Application Information

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IPC IPC(8): C23C28/00C23C16/44C23C14/26
Inventor 黄伟雄
Owner 北京三重镜业(大厂)有限公司
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