What are the characteristics of yarn?
The crucial yarn properties to be considered would be twist in yarn for shortest possible gauge length, within variation of friction in yarn, yarn irregularity, torsional rigidity and flexural rigidity. Torsional properties. Elongation. The below characteristics of yarn has needed during knit fabric manufacturing or knitting.
What are the properties of a spiral yarn?
It exhibits the property of smooth spiraling of one yarn around the other. The constituent two yarns have different length. It is very similar to the structure of a marl yarn.
What are yarns used for?
Yarns are essential for knitted, woven or knotted structures and for many braided ones. 'Yarn' is defined by the American Society for Testing and Materials (ASTM) as 'A generic term for a continuous strand of textile fiber, filament, or material suitable for knitting, weaving to form a textile fabric.
What are the factors that affect the performance of yarns?
Hardness/Twist : The twist density affects the hardness of a yarn and hence the handle and the appearance of textiles. Elasticity : yarn processing and utilisation.
What is Yarn?
Yarns are referred to as the continuous, strands that are produced from a short and staple fibres. These materials differ based on their sizes and texture and form a suitable for knitting, weaving or otherwise intertwining to form textile fabrics. Moreover, they are made from both natural and synthetic fibres.
Types of Yarn
Generally, yarns are twisted tightly by the rollers in order to hold the fibres together. The size, number and the weight of the yarn differ based on the types of fibres from which they are produced. Furthermore, these yarns can be produced both from the natural or synthetic fibres.
Fibre to Yarn
Fibres can be sourced naturally from plants or animals or could be produced synthetically. Cotton and jute are the two major sources of plant-based fibres. Ginning is a traditional process of producing cotton fibres from cotton bolls and then spinning these to form yarns.
Yarn to Fabric
Strands of long and flexible fibres twisted together to form yarn. These are further processed by techniques such as knitting or weaving to produce the final fabric. Based on the source of fibre from which the yarn is spun, the size, number, weight, and properties of the strands greatly vary.
Things to Remember
Fibres are thin thread-like structures that when twisted or grouped form yarn. This yarn, in turn, is processed to produce fabric.
What are the two types of yarn?
Yarn can be made from a number of natural or synthetic fibers. Many types of yarn are made differently though. There are two main types of yarn: spun and filament.
Why are synthetic yarns used?
Yarns combining synthetic and natural fibers inherit the properties of each parent, according to the proportional composition . Synthetics are added to lower cost, increase durability, add unusual color or visual effects, provide machine washability and stain resistance, reduce heat retention or lighten garment weight.
How is spun yarn made?
Spun yarn is made by twisting staple fibres together to make a cohesive thread, or "single." Twisting fibres into yarn in the process called spinning can be dated back to the Upper Paleolithic, and yarn spinning was one of the first processes to be industrialized. Spun yarns may contain a single type of fibre, or be a blend of various types. Combining synthetic fibres (which can have high strength, lustre, and fire retardant qualities) with natural fibres (which have good water absorbency and skin comforting qualities) is very common. The most widely used blends are cotton - polyester and wool - acrylic fibre blends. Blends of different natural fibres are common too, especially with more expensive fibres such as alpaca, angora and cashmere .
Why do single ply yarns pill?
Single ply yarns or using fibers like merino wool are known to pill more due to the fact that in the former, the single ply is not tight enough to securely retain all the fibers under abrasion, and the merino wool's short staple length allows the ends of the fibers to pop out of the twist more easily.
What is embroidery thread?
Embroidery threads are yarns specifically designed for needlework.
How many metres are in a 50g skein of wool?
The actual length of the yarn contained in a ball or skein can vary due to the inherent heaviness of the fibre and the thickness of the strand; for instance, a 50 g skein of lace weight mohair may contain several hundred metres, while a 50 g skein of bulky wool may contain only 60 metres.
What is filament in fiber?
Filament is a continuous strand consisting of anything from 1 filament to many. Synthetic fiber is most often measured in a weight per linear measurement basis, along with cut length. Denier and Dtex are the most common weight to length measures. Cut-length only applies to staple fiber.
What is organic wool?
Organic wool yarns are cleaned using hot water and detergent only. The majority of organic yarns are sourced from Merino sheep and the wool is mostly used for knitting garments. The sheep that produce organic yarn are usually thought to be happy and healthy.
What is the difference between Icelandic wool and washable wool?
Icelandic wool produces soft and rustic yarn balls whereas Washable wool is wool that has been treated , either electronically or chemically, to eliminate the fuzzy fiber layer. Wool yarn is used to make both winter and summer garments. It produces great scarves, gloves, hats, sweaters, and other pieces of garment.
What is the best yarn for winter?
Wool yarn is a wonderful choice for winter clothing accessories. It offers a warm feel, even in the rain and will last you for years without losing shape. It can also be cleaned rather easily when it gets stained and this is why so many knitters around the world prefer this natural yarn fiber over others.
What is Merino wool used for?
Merino wool yarn is widely used for knitting. It produces chunky fabric accessories and comes from a special breed of sheep known as the Merino sheep. The uniqueness of Merino wool lies in the fact that it is super soft and does not cause allergic reactions.
Why do self stripping yarns come in different colors?
Self-stripping yarns come in multiple colors that have been spun together to make unique and immaculate effects. This comes from an evolved method of dyeing that results in the yarn coming out in intricate patterns.
How often do cashmere goats shed their undercoat?
Well, harvesting wool from the Cashmere Goats is a long and demanding process. You see, the goats shed their undercoat once annually. It is very near the skin and has to be separated from the outer hair. It is also taken from the back and mide-side of the goat, not the belly as in other animals.
Where does the wool from the Alpaca come from?
This fiber comes from the Alpaca (a type of Lama domesticated in South America). It is natural wool with a super warm feel and that’s why it mostly used to knit sweaters.
What is yarn made of?
The yarns may be made of spun staple or filament, and they may be stretched or textured. These yarns are processed from premium quality fiber and thus, are extensively used for weaving and knitting hosiery fabrics.
What are the properties of Hosiery yarn?
Properties of Hosiery Yar n. It is suitable for knitting for its softness. It should have less twist and hairiness. It should have less friction required. It must be regular. Continuity of each yarn. It has smooth texture. It is durable. Excellent abrasion resistance.
What is hosiery yarn?
Hosiery yarn comes from a separate spinning process, and is used with circular knitting machines to form fabric. The selection of hosiery yarn depends upon the purpose for which it is to be used. Different types of hosiery are available for sportswear and dresswear for adults and children. The yarns may be made of spun staple or filament, ...
