Hot foil processing quality requirements for electrochemical foil

【China Aluminum Network】 Gold processing is also called hot stamping, commonly known as stamping. Is a certain pressure and temperature conditions, the metal foil or pigment tear hot stamping process on the substrate, and now the foil used in foil stamping processes are generally electro-aluminum foil, its quality directly affects the quality of the product . Next, we will introduce how to ensure the quality of hot stamping.

First, a reasonable choice to use the electrochemical foil is one of the important factors to ensure the quality of hot stamping process. When choosing, it should be considered from the following three aspects:

(1) Different types of galvanized aluminum foil have different uses, and can be mainly divided into hot stamping paper, printed matter, plastic, leather, etc. The types and uses of commonly used galvanized aluminum foils are shown in the figure below.

(2) When the hot stamping area is large, electrified molybdenum that is easy to transfer should be used; when the hot stamping area is small, it is better to use electro-aluminum that does not easily transfer; when hot stamping medium area, we must choose the electro-aluminization with moderate transfer performance. Most currently used are electro-aluminum foils with medium transfer properties.

(3) Use electro-aluminum foil according to the appearance of the imprint. Mainly include: 1 color meets the requirements; 2 gloss can be found standard proofs; 3 imprinted surface can not have defects; 4 electrification of aluminum foil specifications and materials should be calculated to apply, save as a principle;

Second, the bronzing process has the following technical requirements for the use of aluminum foil:

(1) The bottom layer is painted evenly with no noticeable color, color, and stain.

(2) The primer coating is uniform, smooth, white and free of impurities, with no obvious streaks, sand spots, and oxidation.

(3) Keeping the color unchanged when printing plate surface temperature is 70~90'°C.

(4) After rubbing with 100g weight, the number of wear resistance is 2 000 ~ 3 000 times.

At present, most of them rely on visual inspection and feel to identify the performance of galvanized aluminum foil. The luster, brightness reflection, and trachoma of anodized aluminum can be checked visually. The test of the fastness and tightness of anodized aluminum can be done by using transparent tape to adhere to the surface or rubbing it with both hands. If the colored layer is easily peeled off, it indicates that the galvanized aluminum is loose and easy to carry out hot stamping, which is suitable for hot stamping a larger area; , it shows tighter aluminum.

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