Cotton is the dominant material used in terry towels production.
Towels are made from many kinds of cotton yarns. Here are the main technical indexes of yarn:
Fineness indexes of yarn
The coarseness or thickness of yarn is an important index . Tex is the conventionally statutory index of linear density of fiber and yarn. Besides, there are some indexes such as metric count, English count, denier, etc. These indexes can be classified as constant-length system and constant-weight system. Constant-length system indicates the weight of fiber or yarn of fixed length.The larger the number of weight is , the more coarse the yarn is. The frequent used indexes are Tex (1 Tex= 1 gram peer 1000 meters,1 dtex = 10,000 meters) and Denier(1 denier= 1 gram per 9000 meters,0.11 milligrams per meter)
). Denier is often to indicate the fineness of natural fiber silk or artificial filament.Constant-weight system is used to indicate the length of yarn of fixed weight. The larger the number of length is , the finer the yarn is.The English count is the most used measuring unit, denoted by Ne(1 Ne = 840 yards per pound). In practice we indicate cotton yarn by such as 2/21s or 21s/2, what does it mean?
It means yarns weight 21×840/2 yards per pound when double ply , that denote fineness or coarseness or thickness of cotton yarn, as said before bigger number mean finer yarn.
In our toweling industry, there are three sizes of cotton yarn are general : 21s/2 – 21s 2ply, 21s/1 – 21s single ply, 32s/2 – 32s 2ply and 16s/1 -16s 1 ply. Here I want to emphasize that yarn size have nothing to do with quality, but style. The yarns used dominantly are ring spun yarns, because they are more straight, more durable than open-end spun yarn.
Additionally, 16s 1ply has a variation spiral ring spun yarn, that makes the yarn more luxurious and has wonderful water absorbency.