Manufacturing method of laser printing aluminum-plated foil

Abstract

The invention discloses a method for manufacturing a laser printing plated aluminum foil, which comprises the following steps of: printing a customized design pattern on a base film layer by using temperature-resistant ink according to a customization requirement, then carrying out on-line laser imprinting to obtain a laser effect, feeding into vacuum aluminum plating equipment, and carrying out aluminum plating processing to obtain a laser electrochemical aluminum foil with colorful images and texts, and transferring to a printed product through cursor positioning hot stamping to obtain a final finished product. The temperature-resistant printing ink is pre-printed on the base film layer in advance to obtain the laser printing aluminum-plated foil tape, the image-text area can be enlarged by 2-3 times compared with the original design, the specification is not limited, the processing mode is more flexible, and the image-text registration precision deviation can be controlled within the range of 0.020 mm-0. 050 mm.

Description

technical field [0001] The invention relates to a manufacturing method of laser-printed aluminized foil, and belongs to the technical field of packaging and printing of paper products. Background technique [0002] Laser aluminum foil bronzing processing and finishing is a common post-press processing technology. The process of hot stamping and then printing on high-end packaging printed matter is a new idea. It changes the performance of the printing paper locally, and then prints with UV transparent ink, which often plays the finishing touch. For example, Guizhou China Tobacco's "Guiyan Frosted Huangguoshu Hard Pack" product, the main picture of Huangguoshu Waterfall on the front is printed on the bronzing, which makes the main pattern and the surrounding text have a strong contrast. Soaring waterfalls are more realistic. The laser anodized aluminum is hot-stamped first and then the printing process needs to use the designed hot-stamping plate with graphic outlines to pro...

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Problems solved by technology

[0003] The limitations of the existing process: on the one hand, the registration accuracy is not high, and the printing production process is first printed after the base, which has extremely high requirements for the registration of the processing and production, and the paper is baked at a high temperature (generally 100°C-160°C) by the hot stamping machine After baking, the paper loses water due to heat and is under the double action of bronzing pressure, resulting in a particularly large deformation of the paper (generally >0.5mm), which will seriously affect the overprint accuracy of the printing color group and form an ugly edge line effect; two reasons are the The flatness of hot stamping is extremely high. Most of the packaging boxes are printed with UV high-speed printing. The high viscosity of UV ink makes the shear force larger when the printing is peeled off. In actual production, hot stamping back pull often occurs. Not only the ink fails to transfer smoothly to the paper surface, but the aluminum foil powder of the hot stamping pattern is pulled up and piled up on the blanket of the offset printing machine, causing dirty spots on the printed graphics and text, affecting Appearance effect; three reasons are that the current hot stamping process is generally only carried out between flat sheets, which limits the operations of advanced processes such as web gravure printing, flexo printing and rotary offset printing, and the production efficiency and input-output rate are relatively high. Low

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