Sublimation of screen printing ink involves a key link in sublimation transfer technology. The following is a detailed explanation of sublimation of silk screen ink:
1. Definition
Ink sublimation refers to the process in which ink (specifically silk screen ink in silk screen technology) is directly transformed from liquid or solid to gas through force, heat and other conditions. In this process, the molecules on the ink interface are directly converted into gas and deposited on another interface to complete the transfer of the image.
2. Application of silk screen ink sublimation
Silk screen ink sublimation is mainly used in textiles, shoes and hats, advertising, handicrafts and architectural decoration. Through sublimation transfer technology, images or texts can be transferred to the substrate with high precision and high color fastness.
3. Characteristics of silk screen ink sublimation
High precision: Since sublimation ink is gas phase coloring, high-precision image transfer can be achieved, and the images and texts are fine and realistic.
High color fastness: The image after sublimation transfer has high color fastness, is not easy to fade, and can maintain bright colors for a long time.
Strong air permeability: Sublimation transfer technology does not have much impact on the air permeability of the substrate, so it is particularly suitable for materials such as textiles that need to maintain air permeability.
4. Notes on sublimation of screen printing inks
Temperature control: The temperature needs to be strictly controlled during the sublimation transfer process to ensure that the ink can sublimate smoothly and deposit on the substrate. The transfer temperature required for substrates of different materials may be different.
Pressure and time: In addition to temperature, the pressure and time during the transfer process need to be controlled to ensure that the ink can be transferred to the substrate evenly and completely.
Ink selection: It is crucial to choose ink suitable for sublimation transfer. Different inks may have different sublimation temperatures and transfer effects, so they need to be selected according to specific needs.