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Glossary of Terms

A  

Absolta

Five layer sintered product for filtration

Aperture size

Distance between neighbouring warp or weft wires

B  

Betamesh

Further development of smooth weave mesh with increased dirt removal capabilities and good backwashing properties

Blinding Blockage or restriction of the apertures of a sieve or filter by particles
C  
Calendering Milling

Chromatography

Separation of mixed particles into individual components

D  

Differential pressure

Pressure ratio upstream and downstream from the filter

Distribution curve

Graphical presentation of the results from a sieve analysis

Drawing

Passing the warp wire through the heddle

Drawing die

Component with a diamond embedded which determines the wire diameter when drawing wire

Drop Releasing the screen printing mesh from the printed surface
Dry screening Screening powdered materials without liquid

Duplex

Mesh offering high flow rates at increased mechanical loadings

E  

Elastic limit

Tensioning up to which a material by uniaxial tensile load shows no plastic deformation

Eu (Eulerzahl)

Absolute figure measuring the relationship between pressure and inertia

F  
Fabrication Processing the mesh into finished and semi finished goods
G  

Geometric pore size

Diameter of the largest spherical bead capable of passing  through the mesh

L  

Laminate

Multi layer bonded mesh

M  

Mesh analysis

Separation of a bulk material sample and analysis of particle size

Mesh counter

Optical device used to establish mesh count

Mesh fineness Number of wires per inch (Imperial measure)
Mesh thickness Calculated according to wire diameter and mesh type
O  

Open area

Sum of the apertures across the total mesh area

P  

Perforated plate

Plates/metal discs with regularly spaced holes, often used as support for mesh

Poreflo

Plate-like two or three layer laminate produced using offset layered twilled meshes

Poremet

Plate-like filter medium produced using five different mesh layers

Pressure drop/fall off

Difference in pressure caused by filter resistance

R  

REACH

European Union regulation concerning the Registration, Evaluation, Authorisation and registration of Chemicals

Registration Layering of individual colours in full colour printing

Robusta (armoured weave)

Meshes with greater porosity and very high flow rates, extremely robust

Roll card

The ‘identity card’ for each roll of mesh

S  

Screen printing meshes

Precision woven meshes specially developed for screen printing applications

Service life

Operational life of a screen/mesh until it requires replacement

Sieve plate

Wire mesh or perforated plate with identical, regularly spaced openings

Smooth weave

Type of mesh with textured surface for high flow rates

Square weave mesh

Mesh woven with wires spaced at a distance, giving open apertures

Squeegee (screen printing)

Spatula-style component that presses the substrate through openings in the mesh onto the printing surface

T  

TETKOmat

Branded tension meter for measuring screen tension

Theoretical ink deposit

Volume of open area calculated against the area of the substrate

Topmesh

Two or three layer combination of filter and support meshes

Twilled weave

Mesh type giving small filter pores with monofilaments

W  

Warp/warp wire

Wires running in a longitudinal direction

Warping

Transferring the wire from the warp wire reel to the warp beam

Weft/weft wire Wires running at right angles to the warp wire
Wire diameter Diameter of wires used in mesh production
Wire mesh Different types of mesh produced from metals