Talking about: hot stamping materials and equipment
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The essence of hot stamping is transfer, which is the process of transferring the pattern on the anodized aluminum to the substrate by the action of heat and pressure. When the printing plate is heated to a certain extent with the attached electric heating plate, the electroless aluminum film and the paper are embossed, and the glue layer, the metal aluminum layer and the color layer attached to the polyester film are rotated by the action of temperature and pressure. Printed on paper.
Hot stamping material
According to the type of material can be divided into: anodized aluminum hot stamping, color foil hot stamping, color film hot stamping, metal foil hot stamping and other hot stamping foil hot stamping. The following is a brief introduction to the hot stamping of an electrochemical aluminum material. The electrochemical aluminum foil is a hot stamping material which is formed by vacuum evaporation of a metal foil on a film substrate.
1 The first layer is a base film layer, also called a base layer, which functions as a polyester film or polyester having a thickness of 12, 16, 18, 20, 25 μ, which supports the other layers.
2 The second layer is the isolation layer (release layer), which facilitates the separation of the base film from the electrochemical aluminum foil during hot stamping.
3 The third layer is the dye layer (protective layer): it provides multiple color effects while protecting the aluminum layer.
4 The fourth layer is an aluminized layer: reflecting light, showing metallic luster, using vacuum aluminum plating. The specific principle is that the film coated with the color material is placed in a vacuum chamber in a vacuum continuous aluminum plating machine, and under a certain degree of vacuum, the aluminum wire is melted by electric resistance heating and continuously evaporated onto the color layer of the film to form a film. Aluminized layer.
5 The fifth layer is an adhesive layer that bonds the aluminized layer to a substrate such as paper. The electro-chemical aluminum foil is mainly made of gold and silver. It has the characteristics of gorgeous beauty, bright color, crystal and eye-catching, easy to use, etc. It is suitable for hot stamping on paper, plastic, leather, coated fabric, plexiglass, plastic and other materials. One of the most commonly used materials for modern hot stamping. The effect after hot stamping.
Hot stamping equipment
The machine that can transfer the electro-aluminized foil hot stamping material to the printed matter by hot pressing is called a hot stamping machine.
1. Hot stamping machine type and characteristics
1 according to the hot stamping method is divided into:
● Flat and flat, the hot stamping method is plane to plane.
●The circle is flattened, and the hot stamping method is the hot stamping wheel to the plane.
● Round and round, the hot stamping method is hot stamping roller to pressure roller.
2 According to the degree of automation: manual, semi-automatic, fully automatic.
3 according to the form of the whole machine: vertical, horizontal.
2. Basic mechanism of hot stamping machine
1 fuselage frame, including the outer fuselage and the paper feeder, the delivery table and so on.
2 hot stamping device, including hot plate, hot stamping plate, plate and bottom plate. The electric heating plate is fixed on the printing plate platform, and the electric heating plate is provided with a winding electric heating wire with a power of 600-250 OW; the hot stamping plate is a corroded copper plate or zinc plate, which is characterized by good heat transfer, non-deformation, pressure resistance and wear resistance. The embossing plate is usually an aluminum plate or an iron plate; the bottom plate is an aluminum plate having a thickness of about 7 mm for attaching a hot stamping plate;
3 Anodized aluminum conveying device consists of a discharge reel, a take-up roll and a feed roller, an anodized aluminum winding roll and a feeding mechanism. The anodized aluminum is mounted on the unwinding reel, and the anodized aluminum after the hot stamping passes between the two feeding rollers, and the feeding mechanism of the feeding reel is driven by the feeding mechanism of the cam, the connecting rod, the ratchet and the pawl. The intermittent rotation of the feeding roller drives the feeding of the anodized aluminum, and the feeding distance is set to the length of the hot stamping pattern. The stamped aluminum foil is wound on a take-up roll.