Non-conductive film vacuum coating process

Abstract

The invention relates to the technical field of plastic piece surface treatment, in particular to a non conducting film vacuum filming process. The process comprises the following steps: 1. the filming materials of silver and indium are prepared to be as follows: the weight ratio is 4 to 3 and the volume ratio is 1 to 1; 2. the prepared filming materials of the silver and the indium are placed ina material basket in a vacuum room of vacuum filming equipment; 3. the filming product is charged, a door of the vacuum room is closed, and the vacuum room is vacuum pumped; 4. the semi-automatic evaporation function of the vacuum room of the vacuum filming equipment is started, the voltage is adjusted to 1.70V, and the pre-heating is performed for 28 seconds; 5. the voltage is adjusted to 3.10V,and the pre-evaporation is performed for 12 seconds; 6. the voltage is adjusted to 3.85V, and the evaporation is performed for 10 to 12 seconds; and 7. the door of the vacuum room is opened, and the product is taken out. The process effectively solves the problem that the non conducting film is a little yellow.

Description

Technical field:

[0001] The invention relates to the technical field of surface treatment of plastic parts, in particular to a non-conductive film vacuum coating process. Background technique:

[0002] The plastic casing of mobile phones generally needs to be vacuum coated. Since the mobile phone is a charged body, it is required to coat the plastic casing of the mobile phone with a non-conductive film when vacuum coating is performed.

[0003] At present, the non-conductive film coating process is relatively common and mature, and it has sprung up like mushrooms in industrial applications. This process generally adopts the coating process of evaporation after preheating, and most of them use the same process parameters and materials, that is, metal tin is used for evaporation coating, but under natural light, because tin is easily oxidized, the base color of the product is always yellowish. There is also the addition of indium on the basis of tin. Although the addition of...

Examples

Embodiment

[0018] Embodiment, non-conductive film layer vacuum coating process, it comprises the following steps:

[0019] The first step is to deploy the coating materials silver and indium, the mass ratio is 4:3, and the volume ratio is about 1:1;

[0020] In the second step, put the prepared coating materials silver and indium into the material basket in the vacuum chamber of the vacuum coating equipment;

[0021] The third step is to put the product to be coated, close the door of the vacuum chamber, and evacuate the vacuum chamber;

[0022] The fourth step is to start the semi-automatic evaporation function of the vacuum chamber of the vacuum coating equipment, adjust the voltage to 1.70V, and carry out the preheating stage for 28s;

[0023] The fifth step is to adjust the voltage to 3.10V and carry out the pre-evaporation stage for 12s;

[0024] The sixth step is to quickly adjust the voltage to 3.85V, and carry out the evaporation stage for 10-12s;

[0025] The seventh step is ...

Technical field:

[0001] The invention relates to the technical field of surface treatment of plastic parts, in particular to a non-conductive film vacuum coating process. Background technique:

[0002] The plastic casing of mobile phones generally needs to be vacuum coated. Since the mobile phone is a charged body, it is required to coat the plastic casing of the mobile phone with a non-conductive film when vacuum coating is performed.

[0003] At present, the non-conductive film coating process is relatively common and mature, and it has sprung up like mushrooms in industrial applications. This process generally adopts the coating process of evaporation after preheating, and most of them use the same process parameters and materials, that is, metal tin is used for evaporation coating, but under natural light, because tin is easily oxidized, the base color of the product is always yellowish. There is also the addition of indium on the basis of tin. Although the addition of...

Examples

Embodiment

[0018] Embodiment, non-conductive film layer vacuum coating process, it comprises the following steps:

[0019] The first step is to deploy the coating materials silver and indium, the mass ratio is 4:3, and the volume ratio is about 1:1;

[0020] In the second step, put the prepared coating materials silver and indium into the material basket in the vacuum chamber of the vacuum coating equipment;

[0021] The third step is to put the product to be coated, close the door of the vacuum chamber, and evacuate the vacuum chamber;

[0022] The fourth step is to start the semi-automatic evaporation function of the vacuum chamber of the vacuum coating equipment, adjust the voltage to 1.70V, and carry out the preheating stage for 28s;

[0023] The fifth step is to adjust the voltage to 3.10V and carry out the pre-evaporation stage for 12s;

[0024] The sixth step is to quickly adjust the voltage to 3.85V, and carry out the evaporation stage for 10-12s;

[0025] The seventh step is ...