Introduction of thermal transfer process and characteristics of thermal transfer ink

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Thermal transfer is an emerging printing process that has been introduced from abroad for more than 10 years. The printing method is divided into two parts: transfer printing film printing and transfer printing. The transfer printing film printing uses dot printing (resolution of 300 dpi). The pattern is pre-printed on the surface of the film. The printed pattern is rich in layers, colorful, and varied. , Small color difference, good reproducibility, can meet the design effect of the design, and suitable for mass production; Transfer processing through the thermal transfer machine once processing (heat and pressure) Transfer the fine pattern on the transfer film in the product The surface, after the formation of the ink layer and the product surface dissolved as one, lifelike beautiful, greatly improving the product's grade. However, due to the high technological content of this process, many materials need to be imported.

Thermal transfer inks, dye inks, pigment inks These three types of inks are not very different from their original principle. If they come into contact with each other for a long time, they will understand the three types of inks. Here are the three types of inks. The difference!
Dye ink is a molecular-level fully dissolved ink, this ink is a complete complex solution, the probability of blocking the ink head is very small, easily absorbed by the material after inkjet, colorful, and low cost, the disadvantage is not waterproof, and due to dye The molecule decomposes rapidly under ultraviolet irradiation, resulting in obvious fading in outdoor ultraviolet light within one month of use.
The advantages are bright colors, distinct layers and lower prices than pigment inks. Therefore, they are the preferred products for printing pictures and making inkjet business cards.
Pigment ink is said to be the powdery ink. Of course, this is just an image statement and it is not accurate enough. To be precise, it is to grind the solid pigment into very fine particles and dissolve it in a special water solvent. It is a suspension solution or semi-solution, which is the same as the nature of the pigment of our dyeing clothes. In contrast to the principle of the dye ink penetrating into the medium and forming a color, it is colored by the color material attached to the surface of the medium (such as copy paper or printing paper).
Therefore, the advantage is that the use of pigment ink to print, even if printed on plain paper will not pick ink, and because the pigment itself is waterproof, it is not easily decomposed by ultraviolet light, so it is strong water resistance, light resistance, printed things Even if used outdoors, it can be maintained for more than one year without obvious signs of fading.
The disadvantage is that most of the pigment ink will cause the surface to remain with the color material. Therefore, even if you print on glossy paper, such as glossy paper, you will not be able to print a glossy image. This is why it is generally printed with pigment ink. Everything is not shiny. In addition, pigment inks are expensive to manufacture, so they are more expensive than dye inks. The price difference is as high as two to four times. The thermal transfer image is colorful and has a rich layer. The effect is comparable to printing. The difference is that Thermal transfer is the sublimation of the thermal transfer ink under high temperature, and it penetrates into the surface of the media. After desublimation, the image can be formed. Therefore, no film is formed on the surface of the medium, and the image does not come off, does not crack, and has strong light resistance and does not fade for a long time.
Thermal transfer process is applied to the surface of various ABS, PP, plastic, wood, coated metal and other products. According to the requirements of customers design and production of thermal transfer film, the pattern is transferred to the surface of the workpiece by hot pressing, improve product quality. Thermal transfer process is widely used in plastics, cosmetics, toys, electrical appliances, building materials, gifts, food packaging, stationery and other industries. The equipment used in the thermal transfer process includes: baking cup machine, baking cap machine, baking pan machine, direct pressing machine, shaking head heat transfer machine, etc. The required supplies are professional thermal transfer paper and thermal transfer ink. With the addition of printers, computers, and digital cameras, this project can be used as a thermal transfer process.

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