The fluidity of ink includes viscosity, adhesion, viscoelasticity, and yield value and thixotropy.It mainly depends on the nature of pigment and binder, and its manufacturing process, the content of binder directly affects the fluidity of ink. In the printing press, the flow phenomenon is mainly manifested in the following three aspects: (1) When the container is poured into the ink hopper, the ink is easy to flow; Otherwise, (2) when output by the ink hopper, easy ink is called good fluidity; Otherwise, the difference. (3) in uniform ink, ink and ink, easy to spread, transfer, transfer called good liquidity; Vice versa. In the process of printing, it is important to control the flow of ink correctly. Moderate fluidity can not only ensure the normal flow of ink on the printing press, but also make the blot uniform and smooth. (1) If the fluidity is too large, the ink will slip on the ink roller, resulting in the expansion of the blot geometry, damage the picture level, and increase the ink penetration on the paper; (2) If the liquidity is too small, the ink supply is abnormal, so that the ink distribution is not uniform, can not ensure the uniformity of printing ink, and even due to the lack of ink caused by the layout of the version.

Ink printing with bright color, good adaptability, ink is a certain fluidity of paste adhesive, viscosity, negative, thixotropy, liquidity, dry decides the performance of ink, printing ink to add fertilizer, to improve the ink printing eligibility, such as viscosity, viscosity, dry, etc. With the development of printing technology, the variety of ink is increasing, and there are many methods of classification.If classified according to the printing method, there are the following five types: Relief printing ink: book black ink, rotary black ink, color relief ink, etc. Lithographic printing ink: offset gloss resin ink, offset rotary ink, etc. Intaglio printing ink: photogravure ink, engraving intaglio ink, etc. Hole printing ink: copying ink, screen printing ink, etc. Special printing ink: foaming ink, magnetic ink, fluorescent ink, conductive ink, etc. The configuration process of ink is more complex, generally pigment, binder and various additives, in accordance with a certain proportion, first mixed into oil paste in the ink mixer, and then in the roller grinder or repeatedly grinding, so that the pigment to fine particles, evenly dispersed in the binder and made. Although there are many kinds of ink color, but the color and bronzing process is very different from the above, let's look at the effect of bronzing. The effect of hot stamping paper has the advantage of shining.

Now, people's environmental awareness is getting stronger and stronger, and many glue manufacturers are also seeking to transform themselves. Some water-based glue or oil-based glue are produced. Today, we will take water-based glue and oil-based glue as an example to talk about the difference between them. First, the difference between water-based glue and oily glue The first difference is that their solvents are different. The main solvent of water-based watering is water, and acrylic acid, etc., which is made into a kind of glue. And the main solvent of oily glue is oily solvent, toluene, and acrylic acid dissolved. The second difference is the environmental performance. The environmental performance of water-based glue is more prominent than that of oily glue, mainly because oily glue uses oily solvent. If you use a poor oily solvent, it will cause pollution to the environment, and the solvent of water-based glue is relatively healthy and environmentally friendly. The third difference is that the price is different. It is because of their different solvents that the price of oily glue is slightly more expensive and the cost is larger. Two, Oily glue is good or bad The viscosity of oily glue will be prominent. Another advantage is that if you accidentally touch our hands, you can flush them with water after using them. If you compare the degree of adhesion between the two, the strength of oily glue does not transfer water glue, drop a drop can solidify, do not need to paste repeatedly, later is not easy to fall off the phenomenon. And after sticking, even if it comes into contact with water, it is not easy to crack, so the range of application is very wide. Conclusion: Through analysis, I believe that we have a deeper understanding of the difference between water-based adhesive and oily adhesive, mainly in the solvent and environmental performance and price.

Pressure sensitive adhesive in addition to the adhesive, but also to add adhesive and other auxiliary substances. 1.The adhesive of the pressure sensitive adhesive has rubber or synthetic resin and other materials, its role is to give the adhesive layer enough cohesion strength and adhesion, the dosage is 30%-50%. 2.Viscosifier. Viscosifier rosin and its derivatives, petroleum resin, etc., its role is to increase the adhesive layer adhesion. Its dosage is 20% to 40%. 3.Plasticizer. The plasticizer used is the plasticizer used for general plastic processing, and its role is to increase the fast viscosity of the adhesive layer. Its dosage is 0-10%. 4.Anti-aging agent. General rubber, plastic antiaging agent can be used, the role is to improve the service life, the dosage is 0-2%. 5. Packing. The filler used is the general plastic filler, the effect is to improve the cohesion strength of the rubber layer, reduce the cost, the dosage is 0-40%. In addition, some pressure sensitive adhesive, also need to add viscosity regulator, vulcanizing agent and solvent.