Thermal transfer is an emerging printing process that has been introduced to China from abroad for more than 10 years. The printing method of the process is divided into two parts: transfer film printing and transfer processing. The transfer film printing adopts dot printing (resolution up to 300 dpi), and the pattern is pre-printed on the surface of the film. The printed pattern is rich in layers, colorful, and ever-changing. The color difference is small, the reproducibility is good, the effect of the design pattern can be achieved, and it is suitable for mass production.
The transfer processing transfers the delicate pattern on the transfer film to the surface of the product through one-time processing (heating and pressing) of the heat transfer machine. After the molding, the ink layer is integrated with the surface of the product, which is realistic and beautiful, greatly improving the grade of the product. However, due to the high technical content of the process, many materials need to be imported.
Thermal transfer printing can be used for disposable multi-color, arbitrarily complex color, and transition color printing on any relative flat material such as leather, textile fabric, metal, plastic, crystal, wood, and coated paper. The printing press, which does not require plate making, color registration and complicated drying process, does not cause damage to the material. Since the product was launched, it has been highly praised by people in various industries, and the number of factory customers who have purchased twice has increased.
Its advantages are as follows:
1, Printing is simple. It eliminates the need for plate making, printing, and repeated color registration, eliminating the need for various types of tools and materials for screen printing and thermal transfer. You only need to prepare another ordinary computer and an operator to perform the printing operation completely independently. The province has the human and material resources, the method is simple, and the experience of the operators is low.
2, The fold is not damaged. It can be printed not only on tough crystal, stone, metal, glass, etc., but also on soft leather, cloth, cotton and other materials; it can be printed on inorganic materials or printed on complex components. , a variety of organic matter. It has more and better compatibility with materials, avoids the problems of screen printing, water transfer and material selection, and avoids the problem of thermal transfer on the destruction of organic materials such as leather, cloth and cotton. It caters to the diversified needs of the market and can provide users with more comprehensive production services.
3, The folding position is accurate. Thermal transfer avoids the problem of positional offset encountered by manual printing. It combines with the high-tech computer synthesis and self-control technology to accurately align the area and position to be printed. The problem of positional offset encountered by manual printing. Since it is a one-time multi-color printing, there is no problem of color registration. These advantages can also be combined with engraving and etching very effectively, printing beautiful images in the engraved area, or performing precise etching after printing, etc., and can also achieve a good breakthrough in the engraving industry.
4, The color effect is obvious. Traditional printing methods, such as silk screen printing, cannot make all color transitions according to the picture, so the effect of silk screen printing will have a clear color boundary. In the middle of the two colors, it is difficult to reflect the color transition according to the picture itself. However, many products require high-precision, high-complexity patterns such as printed trademarks and logos, and the application of gifts and handicrafts is more extensive. The universal printer can perfectly meet this demand, which fully reflects the strong market potential. Breaking through the bottleneck caused by printing methods such as screen printing, and finding new profit growth points for customers.
However, just as things have two sides, thermal transfer is not perfect. It also has some drawbacks.
The first is that thermal transfer technology requires professional thermal transfer equipment. For ceramics, metals and other items, a thermal transfer coating is required on the surface. And this machine is expensive.
Second, when using thermal transfer technology on clothes such as T-shirts, the pattern feels somewhat hard and has poor air permeability. After washing, it becomes softer, but the air permeability is relatively poor. Moreover, when the thermal transfer T-shirt is pulled laterally, the pattern has fine cracks corresponding to the fabric fibers. This is caused by the characteristics of the thermal transfer itself and cannot be avoided. Also, the color of the T-shirt will change after being pressed at a high temperature, such as white, yellowing. This is due to the evaporation of moisture in the T-shirt, so the scrap rate of the product may be high.
Third, skilled craftsmen with years of experience are needed.