Screen weave dependence

The overall thickness of the screen mesh will be approximately two times that of the wire diameter, but may be slightly smaller or larger tiian 2X, depending on the technique used in the weaving process. In weaving processes where a great deal of pressure is applied to the mesh, the mesh thickness is slightly less than 2X and the mesh is referred to as a hard mesh. A hard mesh is not as pliable as a soft mesh and is less desirable in most applications. 

As speculated in Chapters 4 and 5 it is believed that the shape of the actual pore structure is a secondary influence (the primary influence being the fineness of the screen) on the effective pore diameter. For example, for Dutch Twill meshes, these openings are complex 3D structures. The equilibrium L/V interface shape is complex and it depends on the size and packing of the wires. If it were possible to observe microscopically a L/V interface within a Dutch Twill weave, it might be possible to imderstand why the 450 X 2750 outperforms the 510 x 3600. Meanwhile, it is much more efficacious to look at deeper correlations between the pore diameter and geometrical properties of the mesh like the warp and shute wire diameters. Since the warp and shute diameters are a maj or factor in determining the pore shape it is likely that they have a relationship with the pore diameter. 

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