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Decibel (dB) A unit that expresses the relative difference in power, usually between acoustic or electromagnetic signals. One dB equals ten times the common logarithm of the ratio of incident and transmitted power; or twenty times the common logarithm of the ratio of incident and transmitted field strength. |
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Decitex (dtex) The mass in grams of 10'000 m of fiber or yarn.
A direct yarn numbering system used to define the size of fiber or yarn. The higher the number, the coarser (larger) the yarn. |
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Degreasing Before making a stencil, the mesh should be degreased with a suitable degreasing agent, unless it has a special surface treatment like e.g. SEFAR PET 1500.
Please do not use household detergents! |
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Deionized water Water that goes through an ion exchange process in which all positive and negative ions are removed. |
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Denier The mass in grams of 9000 m of fiber or yarn.
A direct yarn numbering system to define size of fiber or yarn. The higher the number, the coarser (larger) the yarn. |
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Depth filter A filter medium consisting of randomly distributed particles or fibers resulting in openings having a non-uniform and tortuous path. |
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Differential pressure The difference in pressure between two points of a system, such as between two sides of an orifice. |
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Direct emulsion UV - sensitive Emulsion layer for screen printing stencils |
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Double layer fabric By combining a fine filter layer and an open, coarser mesh layer, these fabrics combine high flow capacity and fine particle capture efficiency with the extremely durable construction needed for large-scale process filtration. |
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Downstream side The side of a product stream that has already passed through a given filter system; portion located after the filtration unit. |
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Dual chamber test method Measures near-field shielding
effectiveness by indicating the signal attenuation caused by passage through a test material. |
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Dutch weave Warp and weft wire diameters are different in size: the weft wires are closer together, thus providing excellent strength and high density. |
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Dyeing The process of adding color to textiles in fiber, yarn or fabric form. |
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