IMD Chinese name: in-mold decoration technology, also known as paint free technology.

In-Mold Decoration, IMD is the international popular surface decoration technology, the surface hardening transparent film, the middle printing pattern layer, the back injection layer, the middle ink, can make the product resistant to friction, prevent the surface from being scratched, and can keep the bright color is not easy to fade for a long time

Through the continuous development of traditional injection molding process has been unable to meet the surface needs of products, because of its high requirements in electronic consumer products such as mobile phones, wearable devices on appearance color, friction resistance, scratch prevention, long-term maintenance of color bright and not easy to fade. Therefore, many countries in the world, such as Germany, the United States, Japan and South Korea, are investing a lot of manpower and materials in the development of new materials suitable for this process. Every year, there are a lot of functional film and ink materials.

IMD process was first applied to the automobile, and the defect rate and high cost caused the phase to change color and fall off for a period of time. Later, after continuous testing by Lokia, IMD process began to mature slowly and was widely used. After several years of development, it gradually entered China and was widely used in small household appliances and consumer products.

IMD technology comes into being on this basis. Due to the advantages of (IMD), it is suitable for 3C, home appliances, LOGO boards and plastic products of automobile parts, especially popular mobile phone cases and various instrument panels. Therefore, many countries in the world, such as Germany Bayer, the United States GE, Japan and South Korea, are investing a lot of manpower and materials in the development of new materials suitable for this process. Every year, there are a lot of functional film and ink materials.

IMD technology

IMD process is to put the printed film into the mold with different types, after injection molding, to get the printing texture of the molding, combining product design, mold technology department and traditional post-processing technology as one of the process technology. The main application materials include sheet, resin, ink three parts.

According to the different manufacturing process and product structure shape, IMDs can be roughly divided into three types:

In-Mold Label, or IML-2D, is relatively expensive. IMD is most widely used and promoted in the Lokia mobile phone

In-Mold Roller transfer, IMR-2D for short

In-Mold Forming, IMF-3D for short