Vacuum evaporation process of high-brightness transparent light reflecting film

Abstract

The invention discloses a vacuum evaporation process of a high-brightness transparent light reflecting film. A plated plant base film is mounted in an evaporation chamber, then a cooling roller carries out low-temperature cooling, molybdenum boats where evaporation targets are arranged are put into an evaporation tank, it is guaranteed that the distance between each evaporation target and the bottom end of a center main drum is the same, after a cover plate is closed, the evaporation tank is fed into the evaporation chamber, and the evaporation chamber is vacuumized; the evaporation targets are heated to the melting point and are vaporized, the cover plate of the evaporation tank is opened, the plated plant base film is controlled to move in the evaporation chamber at a constant speed, andstep-by-step evaporation operation is carried out; and equipment is shut down after evaporation is completed. According to the vacuum evaporation process of the high-brightness transparent light reflecting film, the light reflecting brightness of the finally-obtained light reflecting film is far higher than that of a common transparent light reflecting film, a good light reflecting effect is achieved, the surface is light, thin and transparent, the vacuum evaporation process is suitable for later deep processing treatment, and meanwhile a metal film is firm and not prone to falling off.

Description

technical field [0001] The invention relates to the technical field of reflective films, in particular to a vacuum evaporation process for high-brightness transparent reflective films. Background technique [0002] The production process of ordinary reflective plant film is generally as follows: firstly, glass beads of different particle sizes are adhered to the glued PET or PE film, and glass beads with a refractive index of 1.90-1.93 are generally used at the same time. To enhance the reflective effect of the reflective film, a metal film is generally deposited on the surface of the plant film by vacuum evaporation, and the metal film is mostly made of aluminum film. The surface is non-transparent, and it is difficult to use it as a semi-finished product in the later stage. It can be processed into reflective material products of other colors according to customer needs. In addition, the ordinary transparent dielectric film is to directly vapor-deposit the zinc sulfide tar...

AI Technical Summary

Problems solved by technology

[0002] The production process of ordinary reflective plant film is generally as follows: firstly, glass beads of different particle sizes are adhered to the glued PET or PE film, and glass beads with a refractive index of 1.90-1.93 are generally used at the same time. To enhance the reflective effect of the reflective film, a metal film is generally deposited on the surface of the plant film by vacuum evaporation, and the metal film is mostly made of aluminum film. The surface is non-transparent, and it is difficult to use it as a semi-finished product in the later stage. It can be processed into reflective material products of other colors according to customer needs. In addition, the ordinary transparent dielectric film is to directly vapor-deposit the zinc sulfide target on ordinary plastic films such as PTE, PP, and OPP films. , the reflective effect of the dielectric film obtained in this way is poor, and although the traditional aluminized plant film has a good reflective effect, it is difficult to achieve a transparent effect. High brightness transparent reflective film

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