Application of ecological printing process and ecological dyes, paints, pastes and auxiliaries: The ecological printing process should first select dyes, paints, pastes and auxiliaries that are harmless to the human body, and use environmentally friendly pastes to prepare color pastes. Natural paste, and the development of high thickening capacity, easy to recycle and purify environmentally friendly paste, this is the way to realize the ecological printing process.
The application of pigment printing is simple, short in process, no washing, no sewage or less sewage is in line with the principle of clean production, environmentally friendly coating binders and thickeners should be developed and applied, and kerosene emulsified pastes should be banned.
Using digital inkjet printing, its process is simple, no need to make screens and proofing, high degree of automation, colorful colors, high resolution, no environmental pollution, is a true ecological high-tech printing process, it will develop rapidly in the future, and it is urgently needed to develop universal Paint ink with strong performance, low cost and no need for pre-treatment.
Adopting transfer printing: Disperse dye sublimation transfer printing is currently widely used, and some ionic dyes such as new thermal diffusion transfer printing and reactive dyes are being researched and developed (but water washing and sewage discharge are required after printing.) If paint is used Transfer printing does not require baking and washing after printing, and no sewage is discharged, but it has higher requirements for coatings and adhesives. Thermal diffusion transfer printing is currently one of the most promising imaging technologies.