The thermal transfer film is printed on paper lined with polyethylene film. The surface is coated with a protective layer, a base color layer, a defilm layer and a hot melt adhesive layer. By heating the high temperature silicon roller, the temperature and pressure are applied to the transfer foil, so that the transfer layer composed of the decorative printing layer, the surface protection layer and the base color layer is separated from the polyethylene and transferred to the above, the decorative surface pattern is formed, and the surface has excellent properties such as wear-resistant, heat-resistant and light-resistant, the pattern is novel and beautiful, and the color is stable.
The thermal transfer process is to heat the thermal transfer film at one time and transfer the decorative pattern on the thermal transfer to the decorated surface. In the process of thermal transfer, the protective layer and pattern layer are separated from the polyester substrate by the combined action of heat and pressure, and the hot melt adhesive makes the entire decorative layer permanently glued to the substrate. The thermal transfer film is printed on paper lined with polyethylene film. The surface is coated with a protective layer, a base color layer, a defilm layer and a hot melt adhesive layer. By heating the high temperature silicon roller, the temperature and pressure are applied to the transfer foil, so that the transfer layer composed of the decorative printing layer, the surface protection layer and the base color layer is separated from the polyethylene and transferred to the above, the decorative surface pattern is formed, and the surface has excellent properties such as wear-resistant, heat-resistant and light-resistant, the pattern is novel and beautiful, and the color is stable.
Operation Process:
1. Print out the picture with the printing software of the white ink hot stamping machine. This kind of white ink hot stamping should be equipped with at least two nozzles, one spray white ink, one spray color ink. There are also four nozzles, two white inks and two color inks, which are fast, but the accuracy will be slightly reduced. In the printing process, the printer first prints a color picture on a special release printing film, and then prints a layer of white ink on the color picture.
2. Sprinkle hot melt powder. Sprinkle a layer of hot melt powder on top of the white ink, after the white ink will stick a layer of hot melt powder, the blank place to shake clean, the machine will have a shaking action, so there are also people who call this hot stamping process shake powder hot painting. Finally, bake the powder in the oven and bake it dry at 110 degrees.
3. Transfer pictures to clothes or other products with a hot press, transfer pressing temperature 140-160 degrees, 6-10 seconds, according to different mesh hot melt powder, and fabric temperature zone appropriate adjustment of the most suitable temperature zone can easily achieve hot tear
DTF Thermal Transfer Film 4 Advantages:
1. The pattern after ironing is like the texture of PU glue, the tensile resilience is strong and does not deform, and the feel is softer than the glue (30~50% softer than the pattern printed by the oily coating film).
2. Adapt to the vast majority of ink in the market, 100% ink volume, do not accumulate ink does not flow ink.
3. The film surface is dry, can sprinkle 200 mesh ultra-fine powder without sticking powder, can be easily hot tear, warm tear, cold tear.
4. Exclusive possession of the core key technologies at the forefront of the industry, more advantages in controlling quality and stability, and leading the development of the industry to a new direction with the power of scientific and technological innovation.
Usage Parameter
DTF thermal transfer film has its own unique properties, in order to obtain the ideal hot stamping effect, we must strictly grasp the best temperature, pressure and speed. It has three strict process parameters:
1, the temperature determination: the temperature is too low when the hot stamping or hot stamping is not strong, but also make the impression flower; Too high temperature will oxidize the surface of the color layer, make the product lose luster, dark color, and serious foaming. To determine the best stamping temperature should consider the following factors: pressure, speed, area, room temperature, etc. The general range of hot stamping temperature is 140℃ -180 ℃, once the best temperature is determined, it should be kept constant, and the temperature difference is appropriate to fluctuate at ±2℃.
2, the determination of pressure: hot stamping pressure is generally 4-6 kg/cm2. When the pressure is too small, the hot stamping film cannot adhere to the substrate, reducing the fastness; If the pressure is too large, it will cause the compression deformation of the substrate to increase, resulting in the deformation of the pattern and the thinning of the printing layer. If the hot stamping complex uneven products, more attention should be paid to the uniformity of each pressure point, the pressure Angle of the hot stamping wheel and the substrate is higher, otherwise, it is easy to appear partly fast, partly not fast phenomenon.
3, the determination of speed: should be determined according to the hot stamping area, while considering the heating temperature power. Generally, the speed is first determined, then the pressure is determined, and finally the temperature is determined.
Matters needing attention
DTF thermal transfer film products should be handled lightly, put straight and vertical, but not horizontally; Can not be placed near the heat source, must be away from the heat source, generally stored at 25℃; Prevent moisture, once it is damp, it will produce gas under high temperature plus source in use, and make the hot printing film produce chemical reaction. Therefore, the storage and use of hot printing film should pay attention to moisture, moisture, pressure, to be placed in a cool and dry place.
Heat transfer technology is widely used in electrical appliances, daily necessities, building materials decoration and so on. Due to its corrosion resistance, impact resistance, aging resistance, wear resistance, fire resistance, outdoor use to maintain 15 years without discoloration and other properties, almost all products are made of labels in this way. For example, if you open the mobile phone case, you can see a dense label with a barcode inside. Many label requirements can withstand the test of time, long-term deformation, do not fade, can not wear due to contact with solvents, can not be deformed because the temperature is high, so it is necessary to use a special material printing media and printing materials to ensure these characteristics, general inkjet, laser printing technology is unable to achieve.
