There are many technical parameters of silk mesh yarn, today we mainly discuss the color of the mesh yarn, weaving method, mesh number and screen thickness.When we have a deeper understanding of the parameters of the mesh yarn, some of the difficult choices in the purchase are readily resolved.At the same time, we can also find better products.
Screen color
Silk screen in a variety of colors, mainly white, yellow amber, red, and so on.Screen color selection for plate-making good or bad, printing quality has a more important impact, if the white screen plate-making.Printing plate because of the white screen for the diffuse reflection of white light, photosensitive materials have a greater absorption of ultraviolet light, so that the printing plate appeared floating phenomenon (that is, image).Most of the actual production choice of yellow screen, especially for particularly delicate prints, usually 350T imported yellow screen.This is because the brilliant colors in nature are all due to the role of light, no light there is no color, the color of light is determined by the frequency of light waves.Red, orange, yellow, green, cyan, blue and purple are the light that people’s optic nerve can sense, called visible light.The selective absorption and reflection of light on the surface of an object results in different colors. In short, any color we can see is the color of light.That is, when a beam of light hits the surface of a yellow object, only the yellow light is reflected, stimulating people’s visual nerve and showing color, while other colors are absorbed, so the color of the object is yellow.Because screen printing in print exposure, is the use of ultraviolet light, the purple light by the color of the green and magenta mixture of two hue reflected light, that is, in the black lack of yellow hue.In the exposure, purple plus screen yellow is superimposed into black, so the surface of the yellow screen (that is, the bottom of the emulsion layer) is not photosensitive or less exposed, so will not appear “back bask” phenomenon, the image obtained high definition, will not produce halo.
It can be seen that the color of the screen has a great impact on the quality of plate-making, which is especially important when printing fine products.
(2) screen weaving method
Woven silk screen has a single strand (such as stainless steel mesh), double strand and multiple strands (such as silk mesh).A net of single strands of silk
No burr on the surface, with excellent ink performance.The silk screen made of multi-strand silk is soft, but the diameter of the silk is larger.
The screen thickness of the sea has a greater impact, and single – strand screen compared to the low strength, poor ink penetration.
The common weaving forms of silk screen are plain weave, twill weave, weave, yarn and so on.
(3) the mesh number of the screen
Mesh number refers to the number of mesh per centimeter (cm) or per inch (1 inch ≈2.54cm) screen.Mesh product specifications used to express the number of mesh units are holes/cm or mesh/cm.Countries and regions that use the imperial system of measurement, in holes/inches or mesh/inch to express the mesh number.Mesh number can generally explain the silk and silk screen density.Mesh number is higher, the screen is more dense, the mesh is smaller: on the contrary, mesh number is lower, the screen is more sparse, the larger the mesh.That’s 150 wires per inch.The smaller the mesh, ink through the worse, in the selection of screen can be based on the accuracy of the substrate requirements, choose different mesh screen.