Glossary

Taffeta weave

Plain weave

Tangential cross-flow filtration

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.

Tensocheck 200

Digital tension measuring instrument by Sefar

Textured yarn

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

Thread count

See 'Mesh count'

Thread diameter

The thread diameter respectively thread thickness is specified as nominal value, referring to the diameter of the raw and unwoven thread in mm.

Throughput

The amount of solution that will pass through a filter prior to it becoming clogged.

Twill weave

Formed by passing the warp or weft fiber over two or more fibers.

Twist

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')