Compared with the traditional printing process, inkjet printing has greatly improved and improved the production process, cost, and accuracy. It has achieved multi-color, multi-variety, and small batch printing. It has been used in cotton textiles, wool textiles, silks, etc. Natural fiber textiles and chemical fiber textiles are widely used and gradually become the mainstream in the printing market.
In order to improve the final printing quality and meet the requirements for the suitability of the subsequent printing process, textiles must be pre-treated before inkjet printing. This article mainly discusses the pretreatment measures in the inkjet printing process from several common textile materials.
Cotton textiles have the advantages of soft gloss, soft texture, strong durability, good colorability, etc. They are the earliest used in the traditional printing process, and the process is also the most complete and mature.
The inkjet printing process flow mainly includes textile pretreatment, drying, printing, drying, steaming (120℃, 8min, fixing the reactive dye), washing, drying and other processes. Therefore, as long as cotton textiles ensure that their printing suitability meets the special requirements brought about by the difference between inkjet printing and traditional printing processes.
For example, in the inkjet printing process, the transfer of ink to the surface of cotton textiles is in the form of spraying from the nozzle. Therefore, the thickener sodium alginate should be added to the pre-rolling aid (sizing) on the surface of cotton textiles in the early stage of printing. In order to suppress the spread of ink sprayed on cotton fabrics, improve the printing accuracy of cotton textiles. At the same time, it is necessary to ensure that the alkaline environment when the textile surface fiber and ink are combined and the temperature and humidity of the printing workshop are within a certain range (generally, the temperature is required to be maintained at 18-25°C and the relative humidity is greater than 50% during inkjet printing).
As for others, as long as cotton textiles can meet the suitability of traditional printing.