Introduction to thermal transfer paper technology

Transfer printing technology: thermal transfer paper pressurized transfer embossing technology. Taking polyester as an example, the most suitable process conditions should be 205℃ for 20~30s. At 170~180℃ and 10s, the effect is poor. At 180~190℃ and 15~10s, only ring dyeing effect can be achieved. If it is 230~240℃ and more than 40s, it will feel rough and hard, and if it is 240℃ and more than 45s, it will be close to melting. Different types of fabric fibers have different transfer conditions.

In addition to temperature and time, pressure during transfer printing is also a very important condition. If the pressure is too small, the gap between the fabric and the flower paper is large, and the yarn is round. In this way, the dye gas molecules collide with the air in large quantities and escape, resulting in poor effect. At the same time, the dye is easy to penetrate, the lines are thick and the pattern is blurred. If the pressure is increased, the yarn can become flat, the gap between the fabric and the flower paper is small, and the transfer coloring effect is good, the pattern is clear, and the lines are smooth and fine. However, excessive pressure will cause deformation, pilling, and changes in the shape of heavy fabrics, and produce aurora, which will bring disadvantages such as rough feel and surface coloring.

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