Schiesser Lexicon - Yarn - Spun Yarn

SPUN YARN

Created through the wringing of individual threads of all known raw materials. The spinning process of staple fibers is:
- the eventual cleaning or washing (e.g. wool)
- the ordering (individual threads are placed in parallel)
- the stretching (depending on the required yarn strength) and
- the actual spinning (twisting)

The quality of the spun yarn depends on the
- quality and type of the raw material used
- length of the threads (the longer, the more uniform and durable the yarn is)
- fineness of the threads (the finer, the more uniform, lighter, thicker, finer and smoother the yarn is)
- twisting (lower, loose twisting results in softer, more voluminous, absorbable but less durable, and the other way round)

To determine the fineness (yarn strength), one uses a measuring system (e.g. Nm) or a weighting system (e.g. den / tex I dtex).

Nm
The so-called metric number (or even number metric) means length in meters per 1 gram, e.g. nm 55 = 55 meters = 1 gram.

den
The so-called titration system (den = Titre) always the same length = 9000 m and the weight in grams, e. g. 20 den = 20 grams with 9000 m yarn length.

Tex
Modern“ weighting system I our common decimal system customized with regard to 1000 m and grams, e.g. 20 tex = 20 grams = 1000 meters.

Dtex
(decitex) - for chemical continuous yarn and chemical staple fibers
1/10 of tex = grams per 10,000 m, e.g. 20 dtex 20 grams = 10,000 meters.

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