Many styles of marking machines are on the market today since so many companies now utilize the product identification system. Marking machines use a various techniques to apply numbers, letters or artistic designs to products in the manufacturing industry, usually to allow the company to organize the products and track them. Marking the product material directly is more efficient and fast then printing out separate labels and then applying them, which is also why marking machines such as the hot stamping machine, dot peen machine and embossing machine have grown in popularity during recent years. The hot stamping machine is unique in the genre of marking machines because of the material it utilizes to mark products. Foil is an incredibly thin sheet of metal that is malleable because of its fragility and must be handled with care. Aluminum, gold, tin and copper are just a few of the metals with the right sort of malleability to be made into foil. The foil utilized by hot stamping machines is very thin and heated to a degree that when it is stamped onto an object it adheres to that object permanently. A die mold is also involved to create the pattern or series of number or letters that will be imprinted onto the material. Because a die cast is required, hot stamping machines are utilized for mass production products only when the same pattern is being printed onto each product, which means it can not function as a numbering machine or product identification applicator. Another hot stamping limitation is that only certain materials will be compatible with the adhesion of foil. However, the process is quick and attractively eye-catching, making it an aesthetically pleasing process. Industries such as aerospace, biotech, construction, automotive and electric companies all use the hot stamping foil phenomenon for numerous applications. Source: markingmachinery.com
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http://www.markingmachinery.com/2011/11/01/hot-stamping-machines/