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Factors that must be taken into account in selecting a screen mesh

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Factors that must be taken into account in selecting a screen mesh
Factors that must be taken into account in selecting a screen mesh

To achieve the purpose of screen printing, screen selection is not a single factor, must be considered together. Usually consider the following four factors.
1.the resolution of the image: wire diameter fine, high mesh is high resolution. Wire diameter, mesh is low resolution is low. But not the higher the better the mesh, too high due to screen printing caused by the lack of ink, resulting in imprinted incomplete or damaged. At the same time, under the same screen mesh, we should pay attention to the influence of wire diameter. The width or diameter of the most fine lines that the two kinds of wire mesh can reproduce are: L> 2d + w, d is wire diameter, W is on Hole width, when d> W, the screen opening area is small, the impact of ink mobility, resulting in silk or mesh into a serrated or imprinted incomplete, damaged, the screen mesh is too high, the result will be printed with the wire Network-like phenomenon.
In general, wire mesh openings greater than the wire diameter of the wire mesh mesh diameter is smaller than the mesh wire mesh can reproduce a higher resolution. So the network should pay attention to the following points;
A. Mesh / Silk diameter value the greater the better
B. printing surface and substrate contact area as small as possible
C. To achieve the resolution requirements, wire mesh diameter and the width of the hole to meet a certain relationship
D. To meet the printing requirements, the relationship between the wire diameter and the ultimate tension must be considered

Factors that must be taken into account in selecting a screen mesh
2.ink layer thickness and coverage rate For ink thick, cover rate is good, should choose thick net, hole big net (namely HD grade)

Factors that must be taken into account in selecting a screen mesh
3. according to the substrate surface conditions to choose wire mesh material: curved surface or undulating surface to use a good elastic nylon mesh, absorbent surface should be elected a large amount of ink screen; smooth surface should use high tension mesh ; Rough surface with a low number of mesh; insulation surface to use in addition to static wire and so on.

Factors that must be taken into account in selecting a screen mesh
4. the ink performance requirements: According to the performance of ink to select the appropriate ink screen.

Factors that must be taken into account in selecting a screen mesh

Pub Time : 2016-10-24 11:37:16 >> News list
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