What are the main factors of the bronzing effect?

What are the main factors of the bronzing effect?

In order to obtain a good bronzing effect, first of all, there must be suitable gold foil with good thermal stability, and secondly, it is necessary to cooperate with a suitable bronzing machine, such as flat pressing and circular pressing, which have different effects. In any case, Hot stamping plate, gold foil, temperature, pressure and hot stamping dwell time are the key points in the production process.

Hot stamping version Hot stamping stencil is commonly known as hot stamping version or electro-engraving version, most of which are zinc version (with zinc as the plate) and magnesium version (with magnesium as the plate). The following is a brief introduction to several editions:

Zinc plate, the most common and most used hot stamping plate, has a fixed thickness and low production cost, suitable for hot stamping in the quantity of 1000-3000 sheets.

Magnesium version, there are various thicknesses, thicker ones can corrode deeper, used for hot stamping thick board paper, cloth pattern or three-dimensional hot stamping, the effect will be better, the edges of hot stamping paper are clearer, and more durable than zinc version, hot stamping There is no need to change the version when printing larger quantities.

The copper alloy hot stamping plate has stronger hardness than zinc and magnesium, better image level restoration, high definition, and the number of hot stamping can reach 100,000 or even hundreds of thousands. The above plates made of zinc, magnesium and copper alloys are suitable for single-layer bronzing.

Brass plate, about 7mm thick, it has low hardness and great engraving ability, suitable for hand engraving and motor engraving. It is regarded as engraving plate, with distinct layers. It is a must for multi-layer and special bevel engraving. It can be used for striking Convex/concave, embossing, three-dimensional relief, and can also be used for three-dimensional bronzing (that is, bronzing + striking embossing/concave). The brass plate manufacturing process is more complicated and expensive, and depends on the complex requirements of its graphics. Price, the common algorithm in the market is priced per square centimeter.

The size of each roll of gold foil domestic bronzing foil is generally 64cm in width and 120m in length. There are many varieties of gold foil materials to match different materials to be ironed. There are also a roll of thousands or thousands of yuan. Undoubtedly, it is very important to choose the gold foil that is suitable for the printing material, meets the design requirements, and has good quality.

The temperature of the electric hot plate of the flat pressing hot stamping machine is about 110 °C, and the temperature of the electric hot plate of the circular pressing hot stamping machine is 140 °C-150 °C. unclear.

Pressure The degree of pressure depends on the hardness of the material and the texture of the surface. Substrates with loose or soft surfaces can be under heavier pressure, while those with rough or hard surfaces can be under less pressure. The flat pressing and hot stamping machine is a full-sheet synchronous pressing. The starting point of the air hose machine is line pressure and then turns to flat pressure. The rolling machine is similar to the line pressure of the offset machine.

The hot stamping residence time is based on the shortest and good hot stamping effect. If the time is too long, the gold foil and the hot stamped paper will be damaged, and the flash foil will also become sub-color foil.

The main process of the hot stamping process is the production of printing plates and hot stamping transfer printing. The precise control of the printing plate production makes the process technology more refined.