The hot stamping process is also called bronzing or hot galvanized aluminum foil. The galvanized aluminum is composed of five layers of different materials. The first layer of base film layer, the second layer of shedding layer, the third layer of colored layer, the fourth layer of aluminum plating layer, fifth Layer of hot melt film. The principle of hot stamping is that when the galvanized aluminum is heated, the second layer is melted, and then the fifth layer is also melted. When the embossing, the hot-melt film layer adheres to the printed matter, the third layer is separated from the first layer, and the aluminum-plated layer and the colored layer are formed. Stay on the substrate.
(1) Hot stamping temperature requirements, mainly based on the type and performance of the aluminum foil, stamping pressure, hot stamping speed, hot stamping area and graphic structure and ambient temperature may be, the general rule is that when the hot stamping pressure is small, the machine The speed is fast, the background color of the printed material is thick, the graphic area is large, and the lines are thick. When the ambient temperature is low, the hot stamping temperature is appropriately increased. On the contrary, it should be reduced. The temperature adjustment range is generally between 70-80°C.
(2) Hot stamping pressure requirements, mainly based on the hot stamping temperature, machine speed, the nature of the electrochemical aluminum itself, the thickness of the printed ink layer, the graphic structure and paper smoothness may be, the general rule is when the hot stamping temperature is low, hot stamping Fast speed, hot stamped surface layer print, large graphics area, thick lines and low paper smoothness, increase the stamping pressure, on the contrary, reduce the pressure, the range of about 25-35kgf/cm2, than General printing pressure.
(3) Hot stamping process requirements. It is not allowed to add additives such as viscosity reducer and bright light paste containing paraffin in the printed printing ink. Hot stamping parts as little as possible stacked ink, in particular, the three-story ink superimposed. If the process allows, the hot stamping part will leave blank during the plate making, and the design of the aluminized steel should not exceed the width of 450mm and 600mm.
(4) Other requirements, such as the rewinding and unwinding speed of the anodized aluminum, should be coordinated and the pulling force should be moderate, so as to prevent the failure of the hot stamping and the lack of writing or writing.
Preparation before hot stamping: loading plate → pad printing → determination of hot stamping process parameters → hot stamping → sampling → formal hot stamping.
(1) Hot stamping temperature requirements, mainly based on the type and performance of the aluminum foil, stamping pressure, hot stamping speed, hot stamping area and graphic structure and ambient temperature may be, the general rule is that when the hot stamping pressure is small, the machine The speed is fast, the background color of the printed material is thick, the graphic area is large, and the lines are thick. When the ambient temperature is low, the hot stamping temperature is appropriately increased. On the contrary, it should be reduced. The temperature adjustment range is generally between 70-80°C.
(2) Hot stamping pressure requirements, mainly based on the hot stamping temperature, machine speed, the nature of the electrochemical aluminum itself, the thickness of the printed ink layer, the graphic structure and paper smoothness may be, the general rule is when the hot stamping temperature is low, hot stamping Fast speed, hot stamped surface layer print, large graphics area, thick lines and low paper smoothness, increase the stamping pressure, on the contrary, reduce the pressure, the range of about 25-35kgf/cm2, than General printing pressure.
(3) Hot stamping process requirements. It is not allowed to add additives such as viscosity reducer and bright light paste containing paraffin in the printed printing ink. Hot stamping parts as little as possible stacked ink, in particular, the three-story ink superimposed. If the process allows, the hot stamping part will leave blank during the plate making, and the design of the aluminized steel should not exceed the width of 450mm and 600mm.
(4) Other requirements, such as the rewinding and unwinding speed of the anodized aluminum, should be coordinated and the pulling force should be moderate, so as to prevent the failure of the hot stamping and the lack of writing or writing.
Preparation before hot stamping: loading plate → pad printing → determination of hot stamping process parameters → hot stamping → sampling → formal hot stamping.
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