Evaporation production process of polyester ultrathin film

Abstract

The invention discloses an evaporation production process of a polyester ultrathin film. The evaporation production process comprises the following steps: S1, carrying out base film penetrating work; a base film passes through a film passing path formed by the unwinding roller, the first transition roller, the first cooling roller, the second transition roller, the second cooling roller and the winding roller to achieve film penetrating, and film penetrating preparation work is completed. S2, vacuumizing a coating chamber in the case; s3, the winding device is started, and film feeding is started; s5, a metal aluminum thermal evaporation process: a first coating device works on one side of the base film to form an aluminum film, and a second coating device forms an aluminum film on the other side of the base film; s6, a split charging device is used for transferring the winding roller wound with the thin film with the set thickness out of the winding position, and meanwhile the winding roller to be wound is switched to the winding position; the aluminum films can be plated on the two faces of the base film at the same time through one-time film feeding, the working procedures are reduced, and the machining efficiency is improved. And the thin film is slit in the winding process, so that the special slitting procedure is omitted, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of metal coating, and in particular relates to an evaporation production process of a polyester ultra-thin film. Background technique [0002] Aluminum-coated film is a bright metallic film formed by evaporating high-purity aluminum wire into a gaseous state at high temperature through a vacuum aluminum-plating process, and then when the plastic film passes through a vacuum evaporation chamber, the gaseous aluminum molecules precipitate on the surface of the plastic film. Aluminized film is a kind of composite flexible packaging material formed by coating a layer of extremely thin metal aluminum on the surface of plastic film by special technology. The most commonly used processing method is the vacuum aluminized method, which is to pass high temperature The metal aluminum is melted and evaporated, so that the aluminum vapor deposits and accumulates on the surface of the plastic film, so that the surface of ...

AI Technical Summary

Problems solved by technology

[0003] However, in the existing evaporation equipment, usually after the coating is completed on one side of the base film, the other side is coated, the process is complicated, and the processing efficiency is low; and the film obtained after the coating is finished needs to be cut again. process to obtain the required length of the film, the production efficiency is low and the production cost is high

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