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Membrane

A thin polymeric film having pores.




Mesh count

The number of threads in a linear centimeter or inch of fabric/wire cloth.




Mesh geomety

The mesh geometry describes all two- and three-dimensional aspects of the mesh structure. The basic factors in fabric geometry are mesh count and thread diameter.




Mesh number

Indication of number of threads per cm or inch and thread diameter




Mesh opening

Mesh opening is the open area between wires/yarns in the warp and weft direction in the projected plane of the wire mesh.




Mesh tension gauge

Measuring and checking instrument to control the mesh tension. Modern Instruments operate electronically with digital display.




Mesh thickness

The mesh thickness is measured on the unstretched mesh in mm




Monofilament

Single extruded filament




Multifilament

Several monofilaments are bundled together to form a single textile yarn.




Non-woven

A porous web or sheet produced by mechanical, chemical or thermal bonding polymers, fibers or filaments.




Off-contact

The off-contact is the distance between the screen and the substrate before printing, i. e. before the squeegee is pressing down the screen to the substrate.




One circuit stretching system

The one circuit stretching system works pneumatically and is equipped with one control circuit only for all clamps. It is used for screen printing frames with shanks up to approx. 150 cm (also see 'two circuit stretching system').




Open area

The proportion of total screen area that is open space, expressed as a percentage.




Open weave

These fabrics are constructed such that, when viewed at right-angles to their surface, the spaces between the interwoven fibers are visible.




Particle

A relatively small subdivision of matter ranging in diameter from a few angstroms (as with gas molecules) to a few millimeters (as with large raindrops). A particle can have various shapes and dimensions.




Permeability

Ability of a membrane or other material to permit substances to pass through it.




pH value

Used to describe the hydrogen ion concentration of a solution. A pH of 7 is neutral.
Below 7, acidity increases – above 7 alkalinity increases.
The pH value is a non-dimensional figure. It is the negative logarithm of the hydrogen ion activity.




Plain Reverse Dutch weave (PRD)

It has a high thread count in the warp direction and a low thread count in the weft direction.




Plain weave (PLN)

Most basic weave – over and under pattern.




Pneumatic stretching system

Pneumatic stretching systems are consisting of individual clamps and a central control unit. Depending on the system, they are operated with air pressure and one or two air control circuits. The number of clamps is depending on the frame size.




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