In Jan, HOTSALES, Australia customer order 100pcs zinc plates.

In Jan, HOTSALES, 100pcs zinc plates are packed for delivering to our customer in Australia.High quality zinc plates with good packing.

Method for making zinc plate printing plate and the obtained printing plate

The invention provides a method for making a zinc plate printing plate capable of performing hot stamping of anodized aluminum and embossing at one time, and the obtained printing plate. The printing plate is made by the method of layered corrosion. The resulting printing plate has a two-layer depth. The method of the invention has the advantages of simple original design, no color separation for plate making, short time and saving of raw materials. The printing plate of the invention has the advantages of low cost, simple operation, high efficiency and high printing durability. Since the process of hot stamping anodized aluminum and embossing is completed at one time, overprinting is not required, so the consumption is reduced. The printed product has strong convexity, clear lines and clear layers.

The invention relates to a method for producing a zinc plate printing plate and the obtained printing plate, in particular to a method for producing a microcrystalline zinc plate printing plate for hot stamping anodized aluminum pressure relief process in letterpress printing and the obtained printing plate. The produced printing plate.

For a long time, hot stamping anodized aluminum pressure bumps are two different printing processes. During printing, two printing plates are made and printed in two times. This printing process not only wastes raw materials, but also has low production efficiency. Due to unstable overprinting, the loss of semi-finished products is large.

The purpose of the present invention is to provide a method for making a zinc plate printing plate which can eliminate the above-mentioned shortcomings and complete the hot stamping of anodized aluminum by pressing and embossing at one time, and the zinc plate printing plate obtained by this method.

In order to achieve the above purpose, the present invention adopts the method of layered corrosion, and the process flow is: manuscript design→photography→zinc plate→first corrosion→coating protective agent→second corrosion→printing plate. The specific steps are: first design the manuscript according to the needs of printing, and draw the part to be embossed in the anodized aluminum as a hollow pattern during printing. The edge of the hollow pattern plays the role of embossing or breaking the electro-chemical aluminum during printing. Take the designed original into a negative picture and dry it on the zinc plate. The first corrosion of the sun-dried zinc plate: corrosion of the plate with nitric acid with a Baume degree of 2°-15° at room temperature for 50-1260 seconds. If the concentration of nitric acid is too low, it is difficult to corrode the zinc plate to the required depth; if the concentration of nitric acid is too high, the zinc plate will be easily rotten and out of shape. It is difficult for the zinc plate to reach the expected corrosion depth if the corrosion time is too short or too long. The specific corrosion time can be determined according to the concentration of nitric acid, the amount of dissolved zinc and the required corrosion depth of the layout. For the printing plate with small strokes or lace, which is easy to rot or lose shape when corroded, the conventional powder-free corrosion method of zinc plate can be used, and it can be corroded on the machine for 50-240 seconds. During corrosion, the preparation of powder-free etching solution, liquid temperature, and rotation speed of the corrosion machine are the same as those of conventional powder-free corrosion of zinc plates. If the corrosion time on the machine is too short or too long, it is difficult to make the layout reach the expected corrosion depth. The specific time of corrosion can be determined according to the liquid temperature, rotation speed, acidity, dissolved zinc content and layout corrosion depth. The first corrosion makes the corrosion depth of the zinc plate without protective film reach 0.4-2.2 silk meters. After the first corrosion, apply a protective agent to the layout pattern on the zinc plate that does not need to be further corroded. The protective agent can be shellac paint or benzene ink, or other anti-corrosion substances. After drying the protective agent, use the conventional powder-free corrosion method of the zinc plate to carry out the second corrosion of the zinc plate on the machine. During the corrosion process, pay attention to the liquid temperature, rotation speed, time, acidity, and dissolved zinc. balance. The second corrosion brought the corrosion depth of the zinc plate to the depth of the conventional letterpress printing plate. After two times of corrosion, the protective agent is washed off to obtain a zinc plate with a depth of two layers.

The plate used in the present invention is a letterpress microcrystalline zinc plate, and the prepared zinc plate printing plate has a depth of two layers. The depth of the first layer is the embossed part of the anodized aluminum during printing, usually 0.4-2.2 silk meters. If the depth is too small, the convexity of the printed product will not be strong, and the layers will not be obvious; if the depth is too large, it will be difficult to burn the anodized aluminum. The specific depth depends on the thickness of the printing paper, the thinner the paper, the smaller the depth. If desired, the depth can also be less than 0.4 silk meters or greater than 2.2 silk meters. The second layer depth is the part of the layout without a protective layer during the second etching, which is usually the conventional depth of the letterpress printing plate. The printing plate is printed on the machine, and the operation is the same as that of the original hot stamping anodized aluminum. One printing process can obtain a hot stamping anodized aluminum pressure convex product.

The method for making the zinc plate printing plate of the present invention only needs to make one printing plate to replace the two printing plates in the original two printing processes of hot stamping anodized aluminum pressing and embossing. Compared with the prior art, it has the advantages of simple manuscript design. , plate making without color separation, plate making time is short, saving raw materials and so on. The zinc plate printing plate of the present invention can be used without renewing the original equipment to complete the printing of the hot-stamping anodized aluminum pressure convex at one time, and the original two printing processes are simplified into one printing process. Using the zinc plate printing plate of the invention for hot stamping anodized aluminum pressure relief printing, the plate cost is low, the operation is simple, the production efficiency is more than doubled compared with the prior art, and the printing durability is as high as more than 200,000 printing times. Since the two printing processes of hot stamping anodized aluminum are completed at one time without overprinting, it can greatly reduce consumption and save raw materials. The printed product has strong convexity, clear lines and clear layers.