In the fierce market competition, in order to increase the added value of products and more effectively carry out packaging anti-counterfeiting, more and more packaging cartons adopt hot stamping process. Hot stamping is divided into ordinary hot stamping, cold hot stamping, bump hot stamping and holographic hot stamping. Commonly used common hot stamping processes include flat pressing hot stamping and round flat hot stamping. Among them, round flat hot stamping is a line contact method, which has the characteristics of wide hot stamping substrates, suitable for large area hot stamping, and high precision.
Cold hot stamping does not require the use of heated metal plates, but transfers the metal foil using the method of printing adhesives. The cold stamping process has a low cost, saves energy, and has high production efficiency. It is a promising new process.
Concavo-convex hot stamping (also known as three-dimensional hot stamping) is the use of modern engraving technology to make the upper and lower female and male molds. The hot stamping and pressing and bumping processes are completed at one time, which improves the production efficiency. The mold made by electro-engraving can achieve a three-dimensional relief effect that cannot be achieved by the mold made by the general corrosion method through the transition of the curved surface. The appearance of uneven hot stamping makes the hot stamping and embossing processes complete at the same time, reducing the process and waste products caused by inaccurate overprinting.
The holographic logo hot stamping uses computer technology to change the amplitude and frequency of the grating, making its effect more brilliant and clearer than the calculated pattern color. If this kind of holographic mark is used as a copy of the original, a large amount of holographic loss will occur, which can achieve the purpose of anti-counterfeiting. The holographic logo can not only have very good anti-counterfeiting performance, but also can make special numbers or words in the holographic logo according to the needs of customers.
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