Process where the feed stream 'sweeps' the membrane surface and the particulate debris is expelled, thus extending filter life. The filtrate flows through the membrane. Most commonly used in the separation of high and low molecular weight matter in such applications as ultrapure reverse osmosis, ultra-filtration, and submicron microfiltration processes.
Digital tension measuring instrument by Sefar
A yarn that has been geometrically altered to increase bulk or moisture absorption, add resiliency, etc.
Theoretical ink volume Vth
Calculated Value of the ink volume 'Vth' from open area ('ao') in % and the mesh thickness 'D' in mm: Vth = ao x D/100
See 'Mesh count'
The thread diameter respectively thread thickness is specified as nominal value, referring to the diameter of the raw and unwoven thread in mm.
The amount of solution that will pass through a filter prior to it becoming clogged.
Formed by passing the warp or weft fiber over two or more fibers.
Turns imparted to a length of yarn. Usually expressed in tpi (turns per inch).
Two circuit stretching system
A two circuit stretching system works pneumatically and is equipped with two independent air circuit controls, one each for the parallel frame shanks. It is used for frames with shanks exceeding 150 cm (see also 'one circuit stretching system')