When talking about covered yarn, one talks basically about elastane yarns that have at least one more yarn wrapped around. Covering however is not exclusively applied to elastane, sometimes also fine wires are covered.
There are two purposes of covering a yarn: one needs an elasticity which normal textile yarn cannot provide while one would still like to keep the apperance of the textile yarn. This is the case for covering elastane where most often a textile Polyester / Polyamide / ... is wrapped around the elastane core.
Covering a yarn can also be in order to hide something. This is most often the case when covering fine wires. The yarn that is wrapped around gives the looks whereas the core (the fine wire) still provides the functionality (like conductivity).
Single covered yarns are yarns where a second yarn is wrapped around a core yarn.
Double covered yarns are yarns where two separate yarns are wrapped around a core yarn.
The second layer of wrapping mainly serves to compensate the twist direction of the first layer.
With air covered yarns, the outer yarn is intermingled around the core yarn.
A non-elastic multilfilament yarn can for example be intermingled with an elasthane yarn that is in the core. This construction can be of help in certain embroidery applications.
In the example of Elasthane, a non elastic yarn gets wrapped around a twisted elasthane yarn. The elasthane is thus fully covered by the non elastic yarn which leads the yarn as a whole to have the look as well as the haptics of the non elastic yarn. However, the perks of elasthane are still to be noticed when wearing a fabric that is made out of such a core spun yarn by a much higher wear comfort for example.
Functional yarns that meet a growing number of customer demands
Technical yarns are materials with special resistance. Be it high chemical resistance, tensile strength, flame retardancy or functionality such as electrical conductivity. What if a piece of clothing would not only look good on you but would also keep you warm? What if it would also be water-repellent? And what if it had even more features, such as being wind-proof, able to maintain air circulation or act as an antibacterial layer? In today’s textile market, all of these attributes can be found, often even in combination with one another. This is the result if advanced technology becoming available in the textile industry, mainly in the form of functional yarns.
The advantages of functional yarns over classic ones
Functional yarn is responsible for the development of a whole range of new clothing categories that have not been known before. One of those categories is the entire line of athletic clothing, from warm-up clothes made from water-repellent fabric to stretchable sportswear that doesn’t falter and snaps back into shape when fast, dynamic movements are performed. The textiles worn by athletes in all kinds of sports often come with a range of other advantages apart from their elasticity and all of those have been made possible by the use of specialized yarns.
Enjoying the great outdoors thanks to functional yarns
It is not only clothing items where functional yarns play out their full strength, although that field is one of the most important. But yarns are also needed in many other areas and if you’re an outdoor person you will find a number of examples. Ropes for climbing, fishing lines, tents and many other items rely on yarns that can withstand adverse conditions and function fully even after many years of use. Moreover, yarns can also be found in many other applications, from compressive stockings furniture to materials needed for shielding and safety purposes.
Functional yarns come in many different varieties
One of the most sought-after commodities in the market for fabrics are elastic yarns. However, this is only one aspect of textiles that functional yarns can provide. There are also yarns that have the ability to discharge electrostatic, those that can shield from electromagnetic rays or yarns that can protect the wearer from heat or cold or even flames. All of these yarns require a meticulous manufacturing and quality monitoring process, which is why they should always be purchased from established, reputable suppliers.
A big name for functional yarns
In the world of functional yarns, buyers can choose among a large number of suppliers. However, it is important that buyers apply a rigorous quality testing regime before making a purchasing decision. For this type of yarns, it is of utmost importance that the products live up to their promises. For this reason, manufacturers such as Swiss company bäumlin & ernst ag usually are the address to go to. With proven quality, the ability to customize yarns and a long history of development experience, this supplier will reliably cater to all your needs.