What does thermal transfer mean? What is the process of thermal transfer
What does thermal transfer mean? What is the process of thermal transfer printing? Thermal transfer printing is an emerging printing process that was introduced from abroad only more than 10 years ago. The printing method of this process is divided into two parts: transfer film printing and transfer processing. Transfer film printing uses dot printing (resolution up to 300dpi), and the pattern is pre-printed on the surface of the film. The printed pattern is rich in layers, bright in color, and ever-changing. , small color difference, good reproducibility, can achieve the effect required by the pattern designer, and is suitable for mass production.
The transfer process uses a thermal transfer machine to transfer the exquisite patterns on the transfer film to the product surface in one step (heating and pressure). After forming, the ink layer and the product surface melt into one, making it realistic and beautiful. , greatly improving the quality of the product. However, due to the high technical content of this process, many materials need to be imported.
Thermal transfer printing is a new method of printing patterns on products made of various materials. It is especially suitable for producing small quantities of various personalized and customized products, and Print graphics that include full-color images or photos. The principle is to use a printer to print a digital pattern on special transfer paper with special transfer ink, and then use a special transfer machine to accurately transfer the pattern to the surface of the product under high temperature and high pressure to complete the product printing.
It can print multiple colors at one time, any complex colors, and transition colors on any relatively flat materials such as leather, textile fabrics, plexiglass, metal, plastic, crystal, wood products, coated paper, etc. Digital printing presses do not require plate making, color registration and complicated printing procedures, and will not cause damage to the material. Since the product was launched, it has been highly praised by people in various industries, and an increasing number of factory customers are making secondary purchases.
Thermal transfer technology can also use a variety of different transfer materials to achieve different printing effects. The main ones include film transfer and sublimation transfer.
Adhesive film transfer
Adhesive transfer paper contains colloid, and the colloid pattern is printed on the surface of the product using high temperature and high pressure. Imported transfer paper and ink, the printed gel pattern is very thin, breathable, non-stick, non-cracking, washable and does not fall off; unlike many domestically produced transfer papers, the printed gel pattern is thicker and often It has the disadvantages of sticking and cracking. 100% cotton clothes are printed using film transfer technology.
Sublimation transfer
Sublimation transfer is a new generation technology that uses special sublimation ink and sublimation transfer paper. When the pattern is printed on the product, no colloid will be produced. If it is transferred to clothing, the ink will be directly sublimated into the clothing fibers. The fastness is the same as cloth dyeing, and the color is sharp, which is more suitable for colorful patterns. For example, quick sweat-wicking shirts and Physical comfort shirts use sublimation transfer technology.
Products that can be heat transfer printed
Not all products can be printed with heat transfer printing patterns, which involves factors such as the heat resistance and smoothness of the product. Due to the continuous advancement of technology, products that have been maturely developed using heat transfer printing technology include: clothes, cloth bags, hats, pillows, mugs, tiles, watches, mouse pads, coasters, calendars, medals, pennants, etc. Hundreds of products.
Textile transfer
The common textile transfer technologies are film transfer and sublimation transfer. (1) Sublimation transfer printing: This technology is mainly applicable only to clothes whose surface is made of polyester, such as quick sweat-wicking shirts and physical comfort shirts, and white clothes are preferred (the printed pattern is white, but other parts of the clothes are Parts can be other colors, such as colorful sleeves). After digital sublimation is used on colored clothes, the fusion of ink and colored fibers will cause the color of the pattern to be different from the original, so it is not recommended. (2) Film transfer: This technology is mainly used for clothes with extremely high cotton content. All colors can be film transferred, but dark clothes require higher-priced “dark clothes special transfer paper”, which has heavier glue and less stable quality.
Transfer printing on ceramic products
Ceramic products use thermal sublimation transfer. At a high temperature of about 200 degrees Celsius, the ink is sublimated onto the product to produce sharp colors and patterns. High reliability. However, ordinary mugs cannot be transferred directly. They must undergo a special coating process before the pattern can be transferred.
Keywords:
Thermal transfer printing Thermal transfer printing process
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