Polyurethane adhesives are widely used in many fields due to their excellent properties. For many industries, it is unimaginable to leave it. I don't know if you have ever understood that the use of this adhesive can make ink suitable for printing, so it can be promoted and used in the printing industry. Let's learn about this knowledge:
Water-based ink is listed as the first choice for environmentally friendly printing. The room temperature cross-linked water-based polyurethane adhesive can be used to produce one-component polyurethane water-based ink suitable for gravure printing. The water-based ink has high gloss, water resistance, strong adhesion, adjustable dryness, bright colors, clear layers, non-toxic, non-flammable, weather-resistant, viscous and easy to control , It has a wide range of adaptability to various substrate materials.
The base film used in the color printing industry mainly includes polyester film, nylon film, polypropylene film, polyethylene film, etc. The key to choosing ink is that it has good adhesion to these base films. Using vinyl chloride-hydroxyethyl acrylate copolymer containing hydroxyl groups in the molecule to react with macromolecular diols, small molecule chain extenders, and toluene diisocyanate, a new type of polyurethane adhesive can be prepared, which can effectively improve the quality of color printing inks .
In summary, the inks made from polyurethane adhesives are widely used in printing and packaging, ink products, and are safer and more hygienic than other water-based inks. With the enhancement of people's awareness of environmental protection, polyurethane is gradually being promoted and more and more people pay more and more attention to it. Its use is still being broadened, and it will be seen in more fields in the future.
