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What do you need to know to use a screen printer?

pubdate:2018-03-16 author:admin clicks:

What do you need to know to use a screen printer?

For screen printing machines, everyone should be familiar with it! Screen printing machines have also played a big role in our lives and have been widely used in our industrial production. The screen printing machine determines the screen printing process according to the materials to ensure the quality of the products printed by the screen printing machine. The quality of screen printing products has a certain relationship with screen printing machines, but it has a greater relationship with materials and screen printing processes. So what do you need to know to use a screen printer?

First, the thickness of the ink layer and the hiding rate of the screen printing machine

If the product printed by the screen printing machine is thick and has a good hiding rate, a thick net and a large net (ie HD level) should be selected。

Second, screen printing machine printing materials preservation conditions

When printing on screen printers or printing materials should be kept dry at room temperature, avoid ultraviolet rays or strong light, and lay flat on a smooth surface.

Third, the screen printing machine printing ink performance requirements

Before the screen printing machine prints, the screen of the appropriate ink should be selected according to the performance of the ink。

Fourth, the screen printing machine should select the screen material according to the surface condition of the substrate before printing.

For curved surfaces or undulating surfaces, a flexible nylon mesh should be used. For highly absorbent surfaces, a high-mesh screen should be selected; for smooth surfaces, high-tension screens should be used; for rough surfaces, for low-mesh screens; for insulating surfaces, Use a static elimination screen or the like.

Fifth, the screen printing machine has a good image resolution before screen printing:

The wire diameter is fine, and the number of meshes is high, and the resolution is high. The wire diameter is coarse, and the number of meshes is low, and the resolution is low. However, it is not the higher the mesh, the better. If it is too high, the amount of ink generated by screen printing will be insufficient, resulting in defective or broken print. At the same time, under the same mesh number, pay attention to the influence of the wire diameter. The width of the finest line or the diameter of the dot which can be reproduced by the two kinds of screens is: L>2d+w, d is the wire diameter, and W is open. Hole width, when d>W, the opening area of the screen is small, which affects the fluidity of the ink, causing the thread or the dot to become jagged or imprinted and damaged, and the screen printing process is too high, which will cause the printing result to be the same. The same phenomenon as the net.

In general, if the screen printing machine prints a screen with a mesh opening larger than the diameter of the mesh, the screen can be reproduced with a higher resolution than the mesh having a mesh diameter smaller than the mesh diameter. Therefore, the following points should be noted when selecting the network;

A. Mesh/wire diameter The larger the value, the better

B. The smaller the contact area between the printed surface and the substrate, the better.

C. In order to achieve the resolution requirement, the wire diameter and the opening width of the wire mesh must satisfy a certain relationship.

D. In order to meet the printing requirements, the relationship between wire diameter and ultimate tension should be considered.


This article URL:http://en.ctpanews.com/news/372.html

Related label:Screenprintingmachine

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