Introduction of the composition of screen printing mesh ink

Screen printing mesh ink is a loose pulp and has a good thixotropy. Its liquidity is relatively poor. Once we receive the role of external forces. The fluidity of this ink will increase. When the ink is scratched, it can pass through the printing mesh.

Introduce the introduction of the viscosity of the ink in detail

Viscosity

Viscosity, also known as internal friction, is the resistance produced by a layer of fluid moving relative to another layer of fluid. It is a property of the fluid that hinders its flow. The viscosity of the ink is generally expressed by "poise" and "centipoise". The screen printing ink has a viscosity of between about 4,000 and 12,000 centipoise.

Excessive viscosity The ink has poor wettability to the substrate and is not easily transferred to the substrate through the screen. Caused printing difficulties, lack of ink on the print.

If the viscosity is too small, the print will expand, causing the print lines to merge and become a waste product.

The viscosity index can be measured using a viscometer.

The relationship between the change in viscosity and the printability is that the ink is more stable on the printing plate, but the viscosity becomes as fast as possible after transfer to the printing. Thixotropy is detrimental to the former and beneficial to the latter, so proper thixotropic is desirable, and shear tonality is detrimental to printing.

Adding solvents, dilutions or plasticizers to reduce viscosity; adding fillers, pigments, silicides, can increase viscosity.

The composition of the screen printing mesh ink is the above. It is worth considering that the use of screens made by good manufacturers is also crucial. Can choose maishi