Yarn, in simple words, represents few plies of textile stranded together. The piece of yarn has plies which form a filament. Longer plies demand additional stranding or texturing to form the yarn.
Yarn fabric is commonly made of wool, cotton and acryl. It is used for weaving into stronger and thicker fabric using crochet or knitting.Yarn is available in skeins (single long strands) which can be spanned into balls for easier usage.
The fibers, from which yarn is made, are of different origin including plant, animal and vegetable. Cotton, linen and ramie yarns are produced from the vegetable fibers. Wool, angora, silk, cashemere, llama, alpaca, mohair are made of animal fibers such as goats or sheep.
The features of spun yarn (long thin string made by twisting together from two to four untwisted yarns) are determined by the amount of twists established to the fibers during the process of spinning.
The more twists are produced, the stronger yarn is. To have softer yarn, there is a need for low twist. Very tight twists give crepe yarn.
The types of yarns depend on the number of parts being twisted together. A fraction of filament makes single yarn. Plies are produced by stranding two or more yarns and cords are made from several twisted strands.
Large percent of spun yarn is made from cotton. The yarn which is textured is among the most expensive because of chemical processing needed for its production. Bulked yarn is manufactured from fibers that are basically bulky and cannot be densely stranded. Thermoplastic filaments of strained shapes are required for making crimped yarn.
Yarn fabrics are made of different types of yarns utilizing processes of knitting, felting, weaving.
Natural fibers such as cotton, flax, wool and silk are valuable and represent natural fibers used for yarn production. The synthetic yarn is made of nylon, acryl and various forms of polyester. More than 14 types of fibers are used to make yarn.
The fiber differs in origin and can be divided into two main groups: natural and synthetic. Natural fibers, acquired from different animals and plants are utilized in weaving fabrics.
Cotton is the plant number one traditionally used for making fabrics. The plant flax is also used to make fabric called linen.
Silkworms are used to produce natural silk which is the material for silk yarn production.
Wool from sheep, mohair from goat, angora from rabbits and goats, llama fiber from llama are all animal fibers used for making yarn.
Different polymeric chemicals are used to produce synthetic fabrics including acryl, nylon, polyester, rayon, spandex and other fibers.
Yarn is available in different colors. So you can choose from multi-color according to your own needs. Yarn can be also obtained undyed or of natural color. You can dye it at home with special dyes or use in a natural color.
Skeins of yarns have labels with certain types of information. Skein labels inform you about weight (grams) to determine the amount needed for the hand-made works. The thickness gives the information about the yardage in of a skein. Besides, with thickness the manufacturer usually gives recommendations for needle and crochet hook size.
You can also read about gauge or tension on the label. This informs you about stitches and rows needed for the pattern of yarn.