The traditional thermal transfer technology

Traditional heat transfer technology

Heat transfer printing is a printing technology which has been rising in China for less than 20 years. It was introduced into China from abroad in 1990s. After the continuous efforts of the industry colleagues to explore, research, the development has become a mature and updated faster printing technology. Because the process has a great advantage in controlling production cost and improving the appearance of products, it is highly praised and developed in the printing industry.

1、 Introduction of heat transfer technology

The technology of heat transfer printing is divided into two parts: heat transfer film printing and heat transfer printing.

1. hot transfer film printing:

Most of them adopt precise gravure printing technology, and the resolution of printing dot can reach 300 dpi. The pattern is printed on the surface of the transfer film in advance. The printed thermal transfer film has rich pattern layers, bright and full colors, small color difference, and better reproducibility of pattern effect, which can meet the requirements of the design designer.

2. heat transfer technology processing:

Through one-time processing of the heat transfer machine (heating and pressing the heat transfer film synchronously according to the working principle of the heat transfer machine), the fine pattern on the transfer film is transferred on the substrate surface (including plane and surface). After forming, the pattern and the product surface are integrated, and the transfer film falls off naturally, which means the process is completed.

Because the traditional heat transfer printing technology has the advantages of green environment protection, meeting international standards, vivid printing pattern effect, bright color saturation, exquisite and beautiful after product forming, strong pattern adhesion, durable wear-resistant, not easy to fade, low production loss and low cost, etc., it is widely used in large quantities and high requirements of cosmetics, toys, electrical appliances, home building materials, stationery The surface decoration and packaging decoration of gifts, accessories, daily necessities and other products. The applicable materials include ABS, as, PS, PVC, PP, PE and other plastic products, metal, glass and wood products.

2、 Advantages of traditional heat transfer technology

The rise of new transfer technologies such as internal labeling, internal transfer, vacuum transfer, heat sublimation and water transfer has a great impact on the traditional heat transfer technology. However, the use of traditional heat transfer technology is still a prosperous sight. It has been widely used in cosmetics, toys, electrical appliances, home building materials, stationery, gifts, accessories, daily necessities and other fields, Especially in cylindrical, conical, curved and other shape workpieces, such as lipstick shell, pen core, finger snowboard, conical lampshade and other products, the traditional thermal transfer printing is an irreplaceable aspect. Even if it is a flat object, there are many printing processes, but traditional heat transfer can still show its advantages in many aspects.

First, it's efficient

For example, there are six planes in the magic cube. If other printing technologies are used, there must be a process waiting for drying or natural drying. In this process, some places are necessary to store these process products. But the heat transfer printing is different, can be printed continuously, do not need drying, after printing can be packed, the production site has been greatly reduced, production efficiency has been greatly improved.

The second is the rich color

Or take magic square as an example, the traditional magic square pattern has only a single color block in each plane, and the color and pattern are relatively monotonous. Traditional heat transfer printing is different. Because the pattern is printed on pet heat transfer film first, the color of the pattern can be reproduced almost unlimited. All kinds of flowers, grass and tree figure landscape and other patterns can be transferred to the magic square, greatly enhancing the beauty of the magic square appearance and the added value of the product.

The third is environmental protection

Traditional heat transfer film can pass the environmental protection testing (BV, SGS and other institutions) of domestic and foreign testing institutions, whether it is the base film or the selected printing ink, parting layer, back glue and other materials. In the process of production, the noise pollution of heat transfer printing is very low, and the pollution in sewage and exhaust gas is almost zero, which is one of the reasons why traditional heat transfer printing technology is widely popular and different from other printing types.

The fourth is the richness of the combination

The fourth point is also important. The traditional heat transfer process combination is rich. Besides the simple ordinary heat transfer process, the product process combination can be refined, forming high cutting edge, UV, cooking resistance, winding resistance, ethanol resistance, high hardness, high wear resistance, Matt, partial aluminum plating, local laser, transparent laser Metal texture and other heat transfer process combination. Suitable for plastic, wood, leather, metal surface decoration.

In addition, with the continuous optimization of traditional heat transfer technology, the technology of traditional heat transfer machine has been greatly developed. Many heat transfer parts with high difficulty in transfer can be transferred, such as cone, surface, arc triangle, S-shaped surface with smaller radian, etc., which can be transferred, Thus, the swing arm heat transfer machine, taper heat transfer machine, profiling hot transfer machine, surface heat transfer machine and various tooling components and fixtures with different functions are generated, which can derive many stamping functions, which meet the needs of various types of workpiece transfer.