Spandex Fibre: 7 Things You Need to Know About

Spandex Fibre is something that is being hailed as the fiber of the future. It is not a new type of fiber but its new uses have been discovered lately and it is becoming more and more mainstream. Spandex Fiber is being used for creating multiple products including clothes, sheets, furniture covers, sportswear, and a lot of other products. Here are seven things that you need to know about the Spandex Fiber or Lycra, elastane. 

The fiber of Future:

It is being considered the fiber of the future but it is a product that was created back in the 19th century by DuPont, which is an American manufacturer. This fiber has many amazing characteristics that make it a potential candidate for the future of fiber.

Durable and Long Lasting:

This fiber is one of the most durable, and long-lasting fibers. For that reason, it is being used for the creation of durable, and long-lasting dresses. Most of this production happens in China and India, but it is also being used for creating wearables in Pakistan, the United States, and some South American countries as well. 

Breathable –  Allows Air To pass:

This fiber is not just a durable, and long-lasting product, but also a breathable one. For that reason, it makes a great choice for not just wearables, but also seat cushions, and furniture covers for home products. This fiber has so much elasticity that you can scratch it to create breathable portions on the fiber. These elastic parts are used for breathable wearables and covers.


Good For Sports Wear:

Spandex Fiber has become a favorite choice of many international sportswear manufacturing brands. This is because it allows the brands to create more comfortable, easy, and durable sportswear of high quality. Clothes made of Spandex Fiber are being worn by almost every major franchise player in the world. The lightweight fiber feels very comfortable when wearing and that has contributed towards the popularity of this fiber. 

Super Stretchable:

It is a type of fiber that is made of polyester, which is known for being highly stretchable. Similarly, this is also a super flexible and stretchable fiber that you can wear, and use for other purposes. Its stretchability allows the sportswear brands to create more breathable shirts, underpants, sports bras, and more products. Also, the super stretchability and elasticity of this fiber are very useful in making a lot of things. 

Multiple Uses:

The use of spandex fiber is not just limited to sportswear. It can be used for making a lot of products. You can create virtually any product that has needs like stretchability, breathability, and durability. For example, apart from sportswear, this fiber is being used for making seat cushions, and furniture covers. There are many similar examples of the uses of Spandex Fiber.

Lighter and Versatile:

This is also a very versatile and lighter product. It is virtually weightless as compared to polyester, and other stretchable products. This stretchability and weightlessness make it suitable for creating a ton of products. These were the seven most important things that you needed to know about the spandex fiber to better understand it, and why it is popular or why it is used. You should know that there are also multiple types of spandex fiber. Three types of it are more popular as compared to others. These include Spandex, Elastane, and Lycra. Spandex is a trademarked product, meanwhile, elastane is the most common name in Europe, meanwhile, the Lycra is a trademark sign that is owned by the creators of Spandex, the DuPont Corporation.

Also Read:  How Is Cotton Hosiery Yarn Made?

Properties of Elastane Fabric and How it’s Made?

Elastane is a fabric, and it is also known as Spandex or Lycra. Elastane and Lycra are commonly used in Europe, the UK, Australia, and the Middle East; however, Spandex is commonly used in the North American region.

It is a lightweight, synthetic fibre commonly used to make clothing such as sportswear. Elastane is primarily made up of long-chain polymers called polyurethane, which is present up to 85%. Elastane has an amazing stretching ability, and it also comes back to shape when released. The fibres are strong and versatile, normally lighter than rubber, making them superior.

Production of Elastane

Production of this fibre generally consists of six steps and three phases. Elastane can be made in 4 different ways, and they include melt extrusion and reaction spinning, solution dry spinning, solution wet spinning, and last one is solution drying spinning and solution mixing.

The three phases involved in making this fabric include polymer reaction, fabricating the fibre, and the final processing. Most of the production methods are considered inefficient, which is why dry spinning solution is better and frequently used to produce approximately 95% of the world’s elastic supply.

The process starts with producing a polymer that functions as the basis for forming elastane fabric. This step is accomplished by mixing macro-glycol with a diisocyanate monomer in a particular type of vessel.

When the conditions are favourable, these two chemicals interact with each other to form a prepolymer. You should maintain the ratio between these two substances, and this is the most critical step; most commonly, a glycol to diisocyanate ratio of 1:2 is used. After using the dry spinning process, the prepolymer is then reacted with a diamine acid, and this is done by a method known as a chain extension reaction. Later on, this solution is diluted with the solvent making it easy to handle.

Then, it is placed inside a fibre production cell—the cell Spence for producing fibres and covering the elastane material. The mixture is pushed through a spinneret, a device similar to a showerhead and has many tiny holes.

Converting the solution into fibres which are later on heated with nitrogen and solvent gas solution. It is done for performing a chemical reaction that forms liquid polymers into solid strands. They have then collected altogether as they leave the cylindrical spending cell and are compressed also.

Fibres get twisted and converted into different thicknesses and can be used in clothing and other applications. In addition, magnesium stearate or a different polymer is also used to treat the elastic material as a finishing agent. It is mainly done to prevent the fibres from sticking with each other.

Then the fibres are transferred to a spool where they are dyed or woven. Properties of Elastane Important characteristics of this fabric are that it is extremely lightweight, smooth, soft, and that is why it is used in making clothes, particularly sportswear. In closing, this fibre prevents sagging and bagging and is also very scratch-resistant. The fibre is very strong, durable, and more stretchable than rubber.



Elastane is very resistant to damage by body oils, lotions, sweat, or detergent, so the outfits are made up of fabric we use for strenuous exercise. The most amazing ability of the fibre is that you can stretch it repeatedly, and it can recoil very easily to the original shape.

You can dye elastane very easily and in different colours of your choice. Elastane is widely used in making athletics sportswear, including swimwear, exercise wear and cycling suits. It is also used for making accessories like belts and gloves, socks and tights. In addition to this, you can also find skinny jeans, shorts, ski pants, and yoga leggings made up of elastane in the market.

Read More: Is Spandex The Same As Neoprene?

Application of Core Spun Yarn

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In the apparel and garment industry, denim has been a huge attractiveness with excessive capacity that makes use of it a stylish fashion everywhere. Fabrics used for denim are flexible and durable.

Denim marketplace has an awesome marketplace length at the cost of $57,312. Five million and it’s far has predicted that the denim marketplace could have an annual boom price of about6.4% as time passes by.

The denim region with the biggest contribution price to the worldwide sales with better foremost merchandise many people of all age groups will be predicted to retain in developing within the destiny jean marketplace.

With a lot of preference, the denim region has to continuously evolve the material homes to fulfill client wishes consisting of flexibility, form preservation, abrasion resistance, as well as snug to put to use in any respect times. High aggressive capacity in this region pushes the agencies to provide possibilities of various fibers; practical yarns use that makes contributions to material homes.

Core Spun Yarn is a type of fabric that is mostly used to create the majority of denim apparel. Core spun yarns are a type of fabric that is typically made by wrapping a staple polyester or cotton wrapper around a non-stop filament package deal of polyester fibers at some point of spinning, then plying those yarns into a stitching thread. The non-stop filament polyester middle makes up about 60% of the thread construction.


Why Use Core-Spun Yarn?

Core spun yarn is one of the finest fabrics out there. There are several superior fabric properties that core-spun yarn possesses, which makes it a perfect fabric to use in denim. These properties include:

  • High level of tenacity, which means higher strength per length
  • The strength, size, and other physical characteristics are uniformly distributed.
  • A better preliminary modulus or resistance to stretching contributing to higher loop formation and decreased seam puckering.
  • Superior abrasion resistance & durability
  • Better ply security – less unravel-type thread breaks.

The manufacturing of fabrics like Core-spun yarns is mostly accomplished efficiently through numerous systems used to spin the fabric continuously. Each gadget has its own personal features. The traditional ring spinning, easiest and economic systems; however, the middle positioning within the center is often seen to be a bit on the tough side. Most importantly, in the next technique, strip lower back trouble may also rise, and the middle filaments get tangled up. Nevertheless, the middle positioning may be set appropriately and mostly used to supply the commercial yarns.

Applications of Core-Spun Yarn

There are numerous applications of core-spun yarn. As threads, it can be used in leather products, mattresses, and quilts such as women’s shoes, handbags, etc. The immense strength and durability make the core-spun yarn used widely in rice bags too. There are various spinning methods of the core-spun, such as self twist spinning, vortex spinning, electrostatic spinning, ring spinning.

How are Such Yarns Made?

Core Spun Yarn threads are made by spinning 100% Polyester staple fibers into yarns, after which plying those yarns into a stitching thread. Spun Polyester threads are usually made in or three-ply structures relying on the yarn size. As a result, spun polyester threads normally have an awful lot less single give up breaking energy than this particular type of Yarns. Dual core-spun yarn, made with its own twist, is changed into a ring spinning gadget, which changed into the design using a further gear for facilitating each fiber feeding simultaneously.  core-filament-yarnNext, each PET filament is pushed with the aid of using an advantageous feed curler separately. These additives are then made to enter the nip factor through a V-grooved curler, and each time, cotton fibers are passed in such a way that cover up those additives.

  The most common approach of core-spun yarn manufacturing is via way of integrating and combining several filament packages in the shape of a ring. A spool of filament opens up on its own to enter into the filament into the tip of the drafting rollers present on the front. This method is mostly used to supply polyester or cotton stitching threads. 

To produce yarns that are made stretch-to-match garments, a filament that is elastomeric is passed below. The need for such a filament yarn within the center, including cotton fiber, is broadly utilized in garb applications. Some latest trends encompass the usage of multiple center filaments included via means of cotton.

The Best Ways To Style Your Denim Jeans This Holiday Season

StretchDenimThe holiday season is commonly a really packed social calendar, so what to put on is the pinnacle of mind. With a lot on the agenda, it is a laugh time of 12 months to get a touch playful together along with your non-public fashion. 

Jeans, or cotton spandex denim, are arguably one of the most flexible and long-lasting clothes in any wardrobe. They are available in myriad exclusive hues, shapes, sizes, styles – you call it. And even as it’s smooth to pair your preferred denim with an image tee for an informal look, identifying the way to get dressed up denim as a way to lead them to ideal for any event takes a touch bit of extra creativity. 

Luckily, there are such a lot of road fashion mavens, style bloggers and influencers who’ve cracked the code for us. So, during our occasional loss of sartorial imagination, we are able to flip to those fashionistas and allow them to encourage us with their effects of cool and conventional ensembles.

Ways to Dress and Style Up with Jeans:

Keep the appearance easy together, along with your preferred snug striped top. Wear snug heels and your preferred clutch. One of the very best approaches to get dressed up a traditional pair of black thin denim and cotton spandex denim is with a sublime blazer. So have a few laughs with it and pick out a sample in place of a strong for a touch little bit of an assertion this season. This is an exceptional manner to boost an easy white tee, too.

DenimSpandexFabricThe system of a dressy jacket plus tapered-leg light-wash denims is constantly an awesome idea. This appearance is a tasteful nod to the ’80s, and we’re definitely right here for it. To play up the female factor, strive for a luxe velvet hair bow and knee-excessive boots.DenimPuff-sleeved pinnacle is a laugh manner to feature a bit of aptitude to any cotton spandex denim look. If you’ve been given a couple of longer denim in your closet, strive to include a puffy sleeve and dependent lower back for a clean and polished ensemble. Add in a few heels or heeled booties for even greater elegant vibes.CottonSpandexDenimSlim fit denim may be worn with the entirety from equipped tees to collared shirts and informal suits. Men with longer legs may also discover that slender denim is tighter around their calves or thighs. If that is the case, you could pass up a size – simply make certain to modify the hem and duration accordingly. These also are famous these days, so locating a couple of reasonably-priced denim in slender reduction shouldn’t be too hard. Given the extra tailor-made appearance of thin jeans, they’re favored for extra clever informal looks. Think thin jean combinations with knitwear, collared shirts, and informal blazers and ties. They also can paint with extra informal portions like an easy tee and bomber jacket. Conclusion: Holidays are the perfect time to socialise with people. When you do so, you wish to look the absolute best. Wearing denim is one of the most comfortable attire one can go for. There are different ways one can style denim wear. Here in this article, We talked about four such ways of designing and styling ourselves while wearing denim. Read More: The 10 Most Comfortable Denim that Offers Overarching Confidence & Energy

Significance of Air Pressure in Air Covered Yarns

Air-covered yarn production incorporates the usage of two different materials, one is elastic and the other is non-elastic. Of the two, the non-elastic yarns are the one that has filament such as polyester, which accounts to enrich the evenness, durability, aesthetics, and functional properties of the fabrics. While for the elastic yarn, lycra is used as a core material. Elastic core yarns usually have greater uniformity in size, strength, and elongation. 

These yarns have the advantage of uniformity in length, plus the used fabrics are cover and abrasion-resistant. The higher initial modulus and stretch resistance contribute to a better loop formation, excellent abrasion resistance and durability, which are the added advantages of the air-covered yarn.

Air Covered Yarn can be divided into two categories:

  • Nylon ACY
  • Polyester ACY

Yarn manufacturing companies produce air-covered yarn, which is further used to make different types of clothes including comfortable wear such as socks, underwear, and swimwear. Additionally, the air-covered yarns possess significant elasticity and can be designed for knitted, sewed, and woven fabrics depending on the properties.

Air Pressure effect on the yarn production 

As mentioned earlier, the production of air-covered yarn leverages an elastic yarn such as lycra and a non-elastic yarn such as polyester.  The polyester yarn contains filaments that aid in enriching the abrasion resistance and uniformity in length for the Air covered Yarn. On the other hand, while testing the effects of air pressure on air-covered yarn, elastic core-spun yarns are used and lycra remains the core material of inelastic yarn. 

The usual parameters of the air-covering machine are as follows:

  • Delivery speed- 110 meters/min
  • Air pressure- 4,6,8 kg/cm2
  • Elastic draw ratio- 2
  • Overfeed to jet %- 5

Given that the air pressure is the most crucial aspect of Air Covered Yarn production, there are a few characteristics that are tested for in the air covered yarn:

  • Denier of air covered yarn

The denier of the air-covered yarn is nothing but the unit of measurement for the linear mass density of used fiber.

The denier of fiber is measured by preparing lea on hank meter and weighing it on weighing pan. This is done by preparing the lea by wrapping the reel for 80 revolutions of a 120 yards long and then the denier calculated.

The pressure is increased from 4kg/cm2 to 8kg/cm2 and it is obvious that the denier of the yarn increases with the increase of the pressure. On the whole, the increase in denier is a consequence of the increase in the bulkiness of the air-covered yarn.

  • Loop density

The properties of the air-covered yarn are directly associated with the number of loops, thus it is very important to measure the number of loops per 1m of yarn when it’s in an ideal state.

It should be noted that the loop density increases with the increase in pressure. This is due to the fact that the height of the loop changes as the air pressure changes, which results in an increased number of loops when the length of the yarn remains the same.

  • Contents of the components in the yarn

Lycra and polyester are the two components of the air-covered yarn, Hence it’s vital to separately calculate the amount of both. It is done by weighing 1m of air-covered yarn. Then, Lycra is separated from the yarn and is being weighed. Now weighing the leftover part gives the weight of the available polyester.

Also, it is usually observed that as the by increasing pressure, the lycra content decreases while the polyester content increases. Hence, it’s clear that the percentage of both the components i.e lycra and polyester changes as per the pressure variations.


The combination of two or more yarns is used in the usual process of air covering yarn, which results in the formation of yarns having unique characteristics. Air pressure plays a vital role in the formation of these characteristics by the adjusting the air pressure between 4 to 6 and 8 kg/cm2.

By all apperances, the change in the pressure has a notable effect on the air covered yarn’s characteristics including loop density, loop stability, denier of the yarn,and the lycra and polyester content. Also, it results in a decrease in the lycra content and loop instability.