A, gilt version is the primary factor to ensure the quality of hot stamping
At present, making use of blocking version photographic etching and electronic engraving technology, materials commonly used base or zinc. Coated material is exquisite, the surface finish and the heat transfer effect is better than that of zinc by high quality coated stamping teletext gloss and contour sharpness can be improved. Traditional photographic corrosion technology making gilded version of simple technology, low cost, mainly used for text, bold strokes, the general image; for to the secondary rotten deep or ldentifiedd carving technique is fine, the size of the picture and text weight not equal bronzing edition. Electric carving production bronzing edition can show rich and delicate level changes, greatly expand the expressive ability of packaging, the process is conducive to environmental protection, but carving equipment investment is large, the current depth of the engraving is not ideal, easy to cause the bronzing paste version. Holographic anti-counterfeiting gilt version of the production technology requirements are higher, mainly in Taiwan or foreign production, longer period of plate making, only for a fixed, large volume of product packaging. At present, Yuncheng, Beijing, Shanxi and Shanghai, there are several units can be produced.
Two, stamping equipment "to do good work, must first sharpen his tools"
Hot stamping equipment selection is the key factor to determine the quality of hot stamping. Sheet stamping machine a flat, circular applanation, round pressure round three models, at present application of the maximum is flat models, mainly has: Shanghai Yahua Printing Machinery Co., Ltd. tym series of hot stamping and cutting dual-purpose machine, Tangshan Yuyin group company TYMl020 automatic hot stamping die-cutting machine, Youheng Machinery Industrial Company of the MK series automatic stamping die-cutting machine, the highest gilding on speed for 5000 pieces of hours. German Stowe took FOLLJETFBRl04 bronzing machine rotary, using the design idea of the offset printing machine, highest hot stamping and speed up to 10000 hours, is currently the sheet stamping the fastest equipment. Pressure circle round and round applanation, flat three kinds of nano imprint lithography bronzing machine each has its advantages and disadvantages: round pressure round and round applanation hot stamping is the implementation of the line pressure, total pressure is small, relatively small pressure to easily complete the large-scale field gilt, smooth motion, and round pressure round type had a higher production efficiency, especially suitable for high-volume liveware bronzing, but because of the coated circular arc surface processing difficulty of the larger, higher production costs, heating cylinder than plane difficult to heat. Flat flexible and convenient operation, is suitable for the short version of the product. Compared to the domestic stamping equipment and imported stamping equipment has obvious advantages in performance and price, domestic price is only in the price of similar products abroad, L5 ~ 14, but imports of machine overprinter precision, stability, function is obviously better than domestic, domestic machine is durable, more suitable for fixed batch of high-grade packaging products processing. Therefore, product type and quantity is the key to determine the selection of hot stamping equipment. Whether to have BOBST and other high-end hot stamping die cutting equipment in the industry has become the preferred conditions for customers.
Three, hot stamping
The so-called hot stamping is refers to the choice of the type of electro chemical aluminum and stamping speed, temperature, pressure and other factors. In the equipment and other hardware fixed, correctly grasp the hot stamping is the most important means to improve the quality of hot stamping. The following is reflected in the actual operation of some quality problems for an analysis, in order to grasp the scientific grasp of hot gold.