With the continuous development of printing technology, the printing color gamut and resolution are also constantly increasing, and the types of printing materials are also growing. In response to this, the market demand for ink materials is also increasing. Today, Xiaobian and everyone discuss the weak solvent ink! I hope everyone can have a new understanding!

Weak solvent ink, or environmentally friendly solvent ink, is a new type of outdoor solvent spray that has been popular in the outdoor solvent-based digital inkjet market in recent years with high safety, low volatility, low toxicity and high flash point. Ink, Hyunmei, Xin Luolan photo machine series are all using weak solvent inks, and its development has not stagnated. At present, people have put forward higher requirements and developed them into green solvent outdoor inkjet.

Compared with solvent-based inks, the biggest advantage is the environmental friendliness, mainly reflected in the reduction of volatile VOCs and the elimination of many toxic organic solvents, which are no longer needed in the production workshop of weak solvent printers. Ventilation device. The weak solvent ink overcomes the disadvantages of the harshness of the water-based ink on the substrate and the inability of the produced image to be applied outdoors, while maintaining the high precision of the screen made of the aqueous ink. Therefore, the weak solvent ink is between the aqueous and solvent-based inks, taking into account the advantages of both.

In the past year, a new ink inkjet printing industry has developed rapidly and attracted more and more people's attention. This is weak solvent ink, also known as eco-friendly ink (ECO-solvent ink or Light solvent ink). ). What are the advantages of low-solvent inks? What is the difference between solvent-based inks and water-based inks? What are the machines that use weak-solvent inks and what will happen to them? These issues are definitely of concern to everyone. .

Inkjet inks can be broadly classified into aqueous inks, solvent-based inks, and ultraviolet-curable inkjet inks that have just been developed in recent years, depending on the major components thereof. The main features of water-based inks are low cost, no pollution, and bright colors. However, because the water of the main component is volatilized slowly, the inkjet inkjet image is not easy to dry and absorbed by the medium (it requires a special coating on the medium). It is mainly used on paper and various fiber (cloth) as substrate and coated medium. Screens usually made of aqueous inks are mainly used indoors because of poor weather resistance, and solvent-based inks are basically used in the field of outdoor applications. The main component of the solvent-based ink is an organic solvent, generally using a solvent of an ester and a ketone. In the process of combining with the medium, the medium is first swollen and then fused, and the colorant and the substrate in the ink are tightly combined, so the solvent The type ink does not require the medium to be coated, and its volatilization speed is fast, which can meet the requirements of high speed printing. However, the biggest problem with solvent-based inks is environmental protection, because the high content of volatile organic compounds in the ink will certainly be subject to many restrictions in the long run. The screen made by the inkjet printer represented by EPSON's nozzle is very high, but it cannot be used outdoors. Weak solvent inks were developed under this circumstance. Firstly, they were used on high-precision Epson nozzles. Take the Audley D8520 piezoelectric photo machine as an example. The low-solvent ink is used to produce high-quality inks with high precision. It can also be applied to uncoated substrates, and it can also prevent UV rays and is suitable for outdoor use, so it quickly becomes the darling of a new generation of inkjet printing.