Is the cotton direct-injection digital T-shirt printing machine easy to block the nozzle?
The core components of the T-shirt printing machine are expensive, and the quality of their maintenance directly affects the later operating costs. This is also one of the most concerned issues for customers when they choose a pure cotton direct-injection digital T-shirt printing machine. Customers often ask: Is the white ink of the pure cotton direct-injection digital T-shirt printing machine easy to block the nozzle? DuPont White Ink itself does not block the nozzles, but in reality, it is true that the life of the nozzles spraying white ink on the pure cotton direct-injection digital T-shirt printing machine is shorter than the life of the nozzles spraying color ink, and its scrap is basically due to the clogging of the nozzles. Caused. Take a simplest example. Many of the current pure cotton direct-injection digital T-shirt printing machines have double or four nozzles. With a brand-new nozzle installed, the nozzle that sprays white ink will always have problems earlier. Over time, everyone will mistakenly think that it is easy to block the white ink. Coupled with the malicious hype of some manufacturers, it has confirmed the notoriety of the white ink plugging. So since DuPont White Ink itself does not block the nozzles, why are the two nozzles on the same pure cotton direct-jet digital T-shirt printing machine, the nozzles that spray white ink are more likely to break? To solve this mystery, we must start with the technology of pure cotton digital direct injection. When using digital direct injection to print patterns on dark cotton fabrics, white ink is needed as a primer, but the white ink cannot be directly absorbed on the cotton fabric, so you need to spray a layer before spraying white ink. The pre-treatment liquid, when the white ink is sprayed on the pure cotton cloth with the pre-treatment liquid, it will chemically react with it, so that it can be firmly absorbed on the cloth. At this time, it will have what we call color fastness. What does it matter if the nozzle is blocked? Of course there is. When the cotton digital direct printing machine is printing T-shirts, the distance between the nozzle surface and the fabric is only 3 mm, which is very low. There are often some finer hairs on the surface of the fabric that will stand up, and these hairs The length will exceed 3 mm. When the nozzle passes over it, it will sweep to the surface of the nozzle. At this time, the treatment liquid on the hair comes into contact with the white ink on the surface of the nozzle, and a chemical reaction occurs to produce crystallization. Blocked the nozzle. Therefore, DuPont white ink does not block the nozzle. The crystals produced by the chemical reaction between the pre-treatment liquid on the surface of the cloth and the remaining white ink on the surface of the nozzle block the nozzle. Is there a way to reduce this probability of occurrence? Of course there are, and listen to the next article on how to make the white ink nozzle of the pure cotton direct-injection digital T-shirt printing machine have a longer life.