Production method of low-haze vacuum evaporation coating

Abstract

The invention discloses a production method of a low-haze vacuum evaporation coating. The production method comprises the following steps of 1, a resin conveying and mixing process, 2, a melt extrusion process, 3, a longitudinal stretching process, 4, an on-line coating process, 5, a transverse stretching process, 6, a winding slitting process and 7, a vacuum coating process. In the step 4, the surface layer of a film sheet is coated with a coating in a roller coating mode through an anilox roller, the coating comprises 80-120 parts of polyester polyol, 2-10 parts of a curing agent, 0.5-3 parts of a catalyst, 1-3 parts of an aziridine crosslinking agent, 100-150 parts of deionized water and 5-10 parts of isopropanol, a wet coating sheet is obtained, and the thickness of the wet coating is1-5 g / m<2>. According to the production method, through the optimization of the formula of film additives and the film coating, the haze of the vacuum evaporation coating produced under the same production process is reduced, and the coating has better perspective effect and apparent effect, or a product has a wider coating thickness adjustment range on the premise of defining the haze range of the product.

Description

technical field [0001] The invention relates to the technical field of vacuum coating, more specifically, to a production method of a low-haze vacuum evaporation film. Background technique [0002] Vacuum coating refers to a method of heating metal or non-metallic materials under high vacuum conditions to evaporate and condense on the surface of the coating (metal, semiconductor or insulator) to form a thin film. By coating a thin film on the substrate, it has better physical and chemical properties. [0003] The traditional coating method is mainly wet coating method, which mainly includes electroplating method and chemical plating method. The former is to electrolyze its electrolyte solution through electrification, and the electrolyzed ions are plated on the surface of the substrate as another electrode. Therefore, this coating method Conditions, the substrate must be a good conductor of electricity, and the thickness of the film is difficult to control. The latter adop...

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Problems solved by technology

[0006] However, due to the anti-adhesion filler on the surface of the film and the uneven stress during the crystal growth of the metal layer during the production process of the vacuum-evaporated film, the compactness of the metal layer will be reduced, and the refractive index of the film will be inconsistent. High haze in the form of a thin film, and this problem becomes more pronounced with progressively thicker metal plating

In the fields of automotive window films, architectural window films or decorative materials that have high requirements for appearance and visibility, high haze will limit the use of film materials in products that require haze, and also directly Cause consumers to have a negative impression of product quality

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