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We know that there are many interesting phenomena in nature, such as: lotus leaves can become mud without staining. After research, scientists found that this characteristic of lotus leaves is related to the surface nanometer structure.

Another example: geckos can walk through walls. Scientists have also discovered that there are fine structures on the soles of geckos. The combination of fine nano and micro structures causes it to adhere to the smooth surfaces of many objects.

Combining these two examples today, one is the effect of hydrophilic and hydrophobic surfaces, and the other is the effect of adhesion on the familiar printing.

When it comes to printing, everyone is familiar with it. This is something we Chinese are proud of. From movable type printing to laser phototypesetting, we have ushered in two big leaps in printing technology. The changes in these two technologies are actually a big change representing these two different principles.

Type printing is based on physical imaging. Physical imaging is based on the uneven structure of the object. The characters are raised and the blanks are recessed. Laser phototypesetting represents the chemical imaging stage, which came out based on the development of photosensitive chemistry and photosensitive materials.

The common feature of these two technologies is subtraction. We have to engrav a word, cut out the unnecessary places, and make a printing plate by a laser phototype. We need to expose the unnecessary photosensitive layer by etching. Off. This subtraction process is actually a process of wasting materials, which will cause pollution. Is it possible for us to change this process? Combining nanomaterials with two related properties and printing needs. Let’s take a look at the lower right corner. This is the laser photo plate manufacturing process.

From this process, it looks very much like the traditional film photography process. The process of photosensitivity and processing will cause very large pollution. We thought of a method. We directly based on the nanomaterials just mentioned. For oily control, you can directly print an oleophilic pattern on a hydrophilic plate, this pattern can adhere to the ink, and the blank hydrophilic area is not stained with ink, so can it be printed directly? The reason is simple, but it is an international challenge.

Why? First of all, the contrast between the graphic area and the blank area is not large enough, that is, if the contrast between hydrophilic and lipophilic is not large enough, it will cause paste on the print. This is like our first example. We must rely on nanostructures to solve this problem. .

The second ordinary ink will be worn away soon after it is printed on the printing plate. The printed newspaper has to print 100,000 copies. How to solve this problem, we use a nano particle to meet the enhanced technology.

The principle is also very simple, just like we are paving the asphalt road. To improve its abrasion resistance, asphalt alone is not enough. It also needs to be mixed with stones. In our technology, the particles of the stones must be as small as a few nanometers, that is, a few hundred nanometers or less, so as to ensure the smoothness of my printing process and to fundamentally solve the defects of the current photosensitive imaging printing publishing technology.

But after the printing plate is made and sent to the printing shop, we all know that we need to use ink.Why is it called ink? This oil is not our edible oil, it is an organic solvent, it will also produce what we call VOC emissions, especially the use of some toluene solvents, which will seriously affect our health, so why not use water-based ink How about printing this plastic package? For example, rice crackers and hotpot bottoms are all closely related to our food safety. In fact, this is another international problem.

Everyone knows that water-based inks are very difficult to adhere to because of their different surfaces. How to solve this problem? We also rely on nano-materials to solve this problem. After working hard to print exquisite patterns on plastics with water-based inks, this basically solves the problems of pollution of plate making during printing and VOC emissions of inks in the printing shop behind.

Further development of this technology and the combination of printing technology and new material technology can change the production methods of many industries that have traditionally very large volumes but have very serious pollution and consumption.

For example, China’s printing and dyeing should be the world’s largest output, but everyone knows that pollution is very serious. We make printing and dyeing pigments and dyes into inks. By printing, we can print on different materials, such as Say cotton, chemical fiber, silk. These different materials, in fact, have very large surface differences. You can print well on silk, but you can’t print well on chemical fibers. How to control this problem is to rely on nanometer materials to solve the problem of matching surface energy.

In a larger sense, we combine the advancement of advanced material technology with the combination of printing technology and printing technology.