In screen printing, the screen is a network, in screen printing, the skeleton of a plate, which ACTS as a supporting plate film and oil
The substrate determines the surface performance, ink leakage performance, position accuracy and printing resistance, etc.It’s passed by the fibers
Formed by a certain weaving method.Therefore, the mechanical properties of the fibers determine the printing suitability of the screen.
Common types of silk mesh include silk mesh, nylon mesh, polyester silk mesh, metal mesh, etc.There are colored screen such as yellow screen.In general, require a high tensile strength of the mesh, nylon mesh tensile strength and polyester mesh (often said polyester mesh) close.The tensile strength of polyester mesh is slightly stronger than that of nylon mesh, while the tensile strength of nylon mesh is higher.Different wire mesh material in addition to the tear strength and tensile strength of different, for a material and the same material of the wire mesh, the two strength values are roughly proportional to the cross-sectional area of the mesh.That is, if the diameter of mesh A is twice that of mesh B, and the two mesh materials are the same, the tearing strength and tensile strength of mesh A are 4 times that of mesh B.Therefore, increasing the diameter of the mesh will increase its strength according to its square number.
The screen by stretching the network, made of screen frame before the use of screen printing, its performance (in addition to the frame deformation and adhesive factors) mainly depends on two aspects, appearance quality and internal quality.Before stretching the network, measuring the distribution density of the wire mesh with a linear density meter can analyze the density uniformity and deviation of the wire mesh products, namely the appearance quality.Screen roughness (surface roughness) to evaluate the screen appearance quality.