Friday, 19 April 2019

How to adjust the strength of the paper embossing plate during the hot stamping process



Step 1 Hot stamping, embossing temperature control

Hot stamping and embossing are completed once, so the gilding temperature is higher than the temperature when gilding alone, and the temperature is generally controlled at about 150 °C.

Step 2

Hot stamping, pressure adjustment

When starting the hot stamping and embossing work, it is necessary to re-check the adjustment pressure. The layout requires uniformity from top to bottom and left and right. When viewing, the back side of the embossed paper can be turned on and embossed as long as it has a clear outline. Since the bronzing and pressing embossing plates are secondary corrosion, the concave surface is relatively uneven during the etching. When hot stamping, an elastic pad such as a plastic film may be appropriately placed according to the situation to compensate for the unevenness caused by the concave unevenness. The drawbacks of electrifying aluminum.

Step 3

Before the plate is installed, the surface of the hot plate should be cleaned, and some streaks should be drawn on the back of the bronzing and embossing zinc plate. A piece of cloth slightly coated with the white glue (or cowhide glue) larger than the zinc plate is pressed according to the determined zinc plate. The mounting position and printing method are pasted on the hot plate, and then the zinc plate is pasted on the electric heating plate cloth, and some hard paper is pressed on the bottom plate, and the power is turned on and heated to 80-90 ° C, hot pressing. After about 15 minutes, the zinc plate is firmly attached to the hot plate. After the zinc plate is firmly adhered, a 100 g or more coated paper is pasted on the base plate with a transparent adhesive tape, and the printed paper is pressed with the carbon paper. This is a rule, and the cutting is slightly larger than the printed image. 2-3 pieces of white paper, which are glued and flattened, then pasted to the place where the print is placed, and the printed coated paper is removed. After the 250 g of whiteboard paper is adhered to the base plate, the uppermost whiteboard paper is wetted with a wet towel, and the bottom plate is pressed and pressure-pressed until the surface of the whiteboard paper is printed with a rich and uneven mark. It should be noted that it is necessary to prevent the whiteboard paper from being too high, or to pressurize and increase the pressure, so that the surface that does not need to be bronzing and embossed is higher than the hot stamping and embossing, so that the non-bronzing and embossing portions are not pressed. It is also burned with anodized aluminum, which affects the appearance and quality of the picture.

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