At present, in packaging printing, environmentally friendly high temperature resistant (121℃ ~ 150℃) silk screen ink has become the focus of attention. The so-called environmental protection and high temperature resistant silk screen ink is in the packaging product surface of the screen printing process has been completed, so that the printing ink layer can adapt to the heat resistant water-soluble ink layer, and has a certain water resistance, and play the role of environmental protection and decoration ink suitable for the substrate. Environmental protection and high temperature resistant ink screen printing will not change its process due to environmental protection and high temperature resistance. But its characteristic is to dilute and adjust the ink with pure water, especially when the printing products are subjected to a certain high temperature, the ink film of the printing ink will improve its adhesion fastness, so as not to cause defective products or even scrap due to the softening and adhesion of the ink film caused by the heat of the environment. Products according to the needs of users and actual printing process requirements, for different screen printing process. Therefore, the formula design and application scope of the product are briefly introduced here.

Characteristics of water-based high temperature resistant screen printing ink:

Water-based high temperature resistant silk screen printing ink has non-toxic, tasteless, no organic solvent volatiles, low cost, broad material sources, good luster, resistance to weathering, heat resistance, wear resistance and water washing resistance, economic health and other characteristics.

Water-based high temperature resistant screen printing ink according to the use of products, can be divided into: high gloss, ordinary gloss, matt and other three. From the screen process can be divided into: manual screen printing and rotary screen printing two categories. Water-based screen printing high temperature resistant ink in the use process, can eliminate the harm to human body and environmental pollution, has begun to be food, artificial leather, bags and other packaging printing enterprises pay attention to.

In addition to environmental protection, screen printing ink with high temperature resistance compared with solvent based screen printing ink also has the following advantages:

1. Heat and water resistance.

2. High transparency. Substrate bright, can be stored on the print for a long time, in strong sunlight, not easy to yellowing, discoloration, fading.

3. Good wear resistance. Packaging printing accessories need strong wear resistance, determined by 50 pressure per square centimeter, generally should reach 150 rub per minute; Brightness is average, can reach 50 ~ 70 brightness units. Therefore, the packaging screen printing products should not only wear resistance, resistance to 30 points. Clock washing, and up to 121℃ ~ 150℃(3 seconds ~ 10 seconds) can meet this requirement.

4. Fast film forming and drying after printing. The drying process of water-based high temperature resistant silk screen printing ink is 60% by evaporation or volatilization, 40% by material infiltration absorption, drying quickly, about a few minutes or tens of minutes to complete the graphic conjunctiva of the printing ink. If using infrared or hot air drying method can promote the film drying. Suzhou silk screen printing ink

5. Convenient use and storage, safe, conducive to safe production and improve the operating staff's working conditions. Because solvent-based or oil-based screen printing ink belongs to the category of dangerous goods, transportation, storage, use is quite inconvenient. The environmental protection type high temperature resistant water screen printing ink with water as the solvent, without any danger, safe and reliable use, water cleaning equipment and cleaning fingers.