Introduction of Ink and Its Main Properties in Xi ‘an PCB Manufacturing Factory
It also plays a very important role in the production process of printed circuit board in printing ink pcb board factory. Today, Xi ‘an PCB Manufacturing Xiaobian introduces the composition and main performance of ink.
The printing ink of Xi ‘an PCB Factory is mainly composed of pigments, binders and additives.
The function of ink pigment in Xi ‘an pcb Board Factory is to make the ink colorful. Comprises dyes and pigments, wherein the dyes can be dissolved in water, oil and organic solvents; Pigments are insoluble in water or organic solvents, and many pigments are used in printing ink. The performance of the pigment used has the requirements of dispersity, particle size, coloring power, hiding power, oil absorption and chemical resistance.
Introduction of Ink and Its Main Properties in Xi ‘an PCB Manufacturing Factory
The function of the binder is to act as the carrier of the colorant, and mix the colorant uniformly to form a colorful ink film in printing. The binder includes oil, resin, organic solvent and auxiliary materials, including vegetable oil and mineral oil; Alcohols, ketones, esters and aromatic organic solvents; Resin is the core raw material, natural or synthetic, and the auxiliary material is gift and aluminum soap.
The role of additives is to adjust the color HI, viscosity, fluidity and dryness of ink. There are drier (dry oil), thinner, thickener and varnish, etc.
So what are the properties of printing ink in Xi ‘an PCB Board Factory?
1. Viscosity, also known as friction, is the resistance produced when one layer of fluid moves relative to another. If the viscosity is too high, the ink is not easy to transfer to the substrate through the screen, resulting in printing difficulties; if the ink is lacking in the imprint, the viscosity is too low, which will lead to the enlargement of the imprint, blurred image edges and high-density line connections.
2. Fluidity, the fluidity of ink is the degree to which a certain amount of ink naturally flows on a plane within a certain time without external force, and fluidity is the reciprocal of viscosity. High viscosity and low fluidity, on the contrary, low viscosity and high fluidity. Flowability can also be used to measure the thickness of ink.