Covering Usage Spandex Yarn

Why Choose Us?

Rich experience

Xiamen Lilong Spandex Co., Ltd was established in 2003, It specializes in the R&D and production of high-tech specialty fibers.

High quality

The company introduced complete sets of continuous spinning production technology. High-temperature resistant, high-rebound, chlorine-resistant, phenol-resistant, and other differentiated spandex yarn from 12D to 1680D.

Technological innovation

Over the years, Lilon has fully utilized its talent and technological advantages, continuously exploring and innovating in the field of high-tech special fibers. It independently developed high-temperature resistant, high-rebound, chlorine-resistant, phenol-resistant, and other differentiated spandex with stability.

High quality service

Adhering to the spirit of "unity, positivity, development, and innovation", the company persists in the management policy of "promoting customer satisfaction with quality and meeting customer needs with innovation", winning customers and selling well worldwide.

What Is Covering Usage Spandex Yarn

Covering usage spandex yarn is an elastic yarn formed by covering the elongated spandex yarn with the spandex yarn as the core, and wrapping the elongated spandex yarn with the filament or short fiber yarn in a spiral manner.

Key Features of Covering Usage Spandex Yarn

Unmatched elasticity

Covering usage spandex yarn boasts exceptional stretchability, making it the go-to choice for crafting socks, seamless underwear, fabrics, and swimwear that demand the perfect fit.

Durable performance

Precision-engineered for lasting durability, our yarn ensures your creations maintain their shape and resilience even after repeated use.

Versatile innovation

Whether you're in the fashion, sportswear, or intimate apparel industry, covering usage spandex yarn opens up a world of creative possibilities.

Types of Covering Usage Spandex Yarn

Conventional Covered Yarn

Take spandex the elastic fiber as the center core, establishes the different multiple again, with the different type hard gauze, the way which ties down, the spandex complete gable, causes the fabric process to wash in the process, enables Spandex to be allowed to receive the hard gauze completest protection, makes the fabric the life to lengthen, the general common specification has the single pocket to cover the gauze, gable gauze..
● Single Covered Yarn -SCY
Single Covered Yarn - Conventional is wrapped by a single non-elastic filament yarn. It can be divided into two specifications-Z twist yarn (clockwise) , S-twist yarn(anti-clockwise).It is usually used in Z twist in Lycra fabric. But socks, underwear will used both S and Z according to body structure of characters. Application: Tights、Woven fabrics、Flat knitting、Narrow fabrics、Circular knitting
● Double Covered Yarn -DCY
Double Covered Yarn - Conventional is wrapped by two yarns in opposite directions .One is S twist yarns, and the other is Z twist yarns (outer cover and inner cover) ,.It is very good for weaving and knitting than SCY, the different of number of TPM will make various sense of touch.
●Application: Tights、Woven fabrics、Flat knitting、Narrow fabrics、Circular knitting

Core Twisted Yarn

Core Twist Yarn is that we twist any fiber together non-elastic fiber such as cotton, wool, polyester, nylon, acrylic. It can combinate the advantage in different yarn.
●Application: Sweater、Flat knitting threads、Woven fabrics

Compound Yarns

Synthetic fiber-filament is as core yarn, which is covered with natural spun or artificial spun. It is anti-wrinkle, anti-wash and amends the flaw of textile- easy-wrinkle and ironed textile only can be wore after washing.
●Application: Sweater、Flat knitting、Woven fabrics

Air-Jet Covered Yarn / Intermingled Yarn

Air Jet Covered Yarns are covered by a multi-filament artificial yarn by air jets. Air-Jet Covered Yarns/Intermingled Yarns only can be use filament but not suitable for spun.
●Application: Socks / Twisted Yarn、Flat knitting thread、Woven fabrics、Circular knitting

140D Covering Usage Spandex Yarn AA Grade

Single Covering Usage Spandex Yarn and Double Covering Usage Spandex Yarn

The single-covered yarn (CCY) is covered with a layer of nylon yarn on the outer layer of the spandex yarn. Its biggest disadvantage is that the core is more serious.

In the subsequent processing process, the exposed spandex yarn is easy to be worn by the machine parts and break; or When heated, the color becomes yellow, sticky, and the strength decreases, and it shrinks to different degrees.

Double-covered yarn (DCY) is covered with two layers of nylon yarn on the outer layer of spandex yarn, and the directions of the two layers of covering are opposite.

The spandex core filaments are well covered, and the exposure is lighter, and because the nylon filaments wrap the core filaments symmetrically with opposite helix angles.

The elasticity of the wrapping yarn is well balanced, and generally it can be processed in the subsequent process without shaping, but the processing cost of the double-covered yarn is relatively high.

Machine-Covered or Air-Covered: Covering Usage Spandex Yarn

Based on the number of coverings: Single cover & double cover

● Single Cover (SC): A single layer of filament wrapped around the spandex core in a highly regular spiral. This yarn, commonly used for socks and weft-knitted elastic fabrics, may exhibit spandex exposure in tense conditions.
● Double Cover (DC): Two layers of filament spirally wrapped around the spandex core, typically in opposite directions. This creates a highly covered structure, minimizing spandex exposure even in tense states. Known for good elastic balance, it often doesn't require additional sizing treatment before subsequent processes. Primarily used for legwear, elastic bands, compression stockings, and similar fabrics.

Based on the covering equipment: Spandex cover & air cover

● Spandex-Covered Yarn (SCY): Filaments are continuously rotated and wound around the steadily stretched spandex core on a covering machine, resulting in a yarn with "twist" (Twists Per Meter – TPM). The fabric is characterized by smoothness, stiffness, and abrasion resistance.
● Air-Covered Yarn (ACY): Both the outer filament and the spandex core are simultaneously drawn through a specific nozzle, subject to high-pressure compressed air, forming a rhythmic network of yarn with periodic points. Its main characteristic is a soft and smooth feel.
● Air-Covered and Machine-Covered yarns have their advantages and disadvantages in downstream weaving. While Air-Covered yarns may require sizing during warp sizing on jet looms to prevent fuzziness and breakage, they have significantly higher production capacity and lower cost compared to Machine-Covered yarns.

The Advantages of Covering Usage Spandex Yarn

Elasticity and comfort

It offers excellent elasticity, allowing the shoe upper to snugly wrap around the foot, providing a great fit and comfort.
Lightweight: It is extremely lightweight and does not add extra weight to the shoes, making them more comfortable to wear.

Good breathability

Spandex-coated heel counters typically have good breathability, promoting air circulation, reducing sweating, and odor issues.

Durability

Spandex-coated heel counter materials often have high durability, withstanding friction and daily wear and tear, extending the lifespan of shoes.

Shape retention

Spandex-coated heel counters can maintain the shape of the shoe upper, preventing deformation or sagging, thus helping to preserve the appearance and performance of the shoes.

Flexibility

The spandex-coated heel counter material is relatively flexible, allowing it to adapt to different design and style requirements, facilitating the production of various shoe styles.

What Are the Applications of Spandex Coated Yarn

Performance Sportswear

Covering usage spandex yarn is highly recommended for athletic apparel like running attire, sports shorts, and supportive sports bras.

Intimate Apparel And Swimwear

The luxurious and gentle texture of covering usage spandex yarn renders it a perfect choice for lingerie and swimwear creations, ensuring unparalleled comfort without causing any skin irritation.

Seamless Legwear

Covering usage spandex yarn presents remarkable flexibility and stretchiness, making it suitable for making tights and yoga pants.

210D Covering Usage Spandex Yarn AA Grade

What Is the Main Process of Covering Usage Spandex Yarn

Covering usage spandex yarn is an elastic thread with spandex as the core, which is made of filament or staple fiber spirally wrapped with stretched spandex.

In the spinning process, spandex elasticity is an important process parameter, which affects the elasticity of the core and fabric, as well as the strength, uniformity and creep of the core. The pre-draft ratio of spandex is too small to give full play to the advantages of elastic fabrics. When the pre-draft is too high, spinning is difficult, it is easy to cause breakage, and the product quality will decrease accordingly. In addition, the percentage of spandex also affects the elasticity of the covering, the higher the content, the better the elasticity. When the size of the spandex yarn is constant, the percentage of the spandex yarn decreases with the increase of the draft ratio, that is, the pre-draft ratio of the spandex yarn is inversely proportional to the percentage of the spandex yarn.

The elongation of the air coating increases with the increase of the pre-draft ratio of the spandex. After the draft reaches a certain value, the stretchability of the spandex makes the coating curl. Properly increasing the wholesale nylon spandex swimwear fabrics material suppliers pre-draft ratio can reduce the percentage of spandex and improve the wrapping curl. However, when the draft is too large, the deformation amplitude of spandex is close to the critical value of deformation, which can reduce the strength and elongation of the coating, but it is beneficial to the evenness of the coating.

Under the action of constant drawing force, the phenomenon that the shape changes with time is called creep. When the spandex is pre-stretched by 3.5 times, the creep resistance of the conventional coating is better. It is necessary to adjust the style of the downstream fabric according to the application.

In addition to the requirement of the draft ratio of spandex for air coating, another important process parameter of mechanical coating is twist, which affects the quality, elongation and evenness of the thread. The cohesion force between the covering and the spandex wire can be improved, so that the strength of the covering wire can be improved. The twist is too low, the coating is loose, the coating effect is affected, and the core wire is exposed. So the mechanical coating is higher. Too high, the fabric feels hard, and the drape is poor. Generally, it should be adjusted according to the change of thread denier and the different requirements of fabric style. For example, the n40d 20d package is around 600, while the n70d 40d or t150d 40d package is around 480. The elongation of the bag is also mainly determined by the properties of the spandex core. If it is too large, the outer coating is too tight, the elastic effect of spandex cannot be fully exerted, and the elongation rate decreases. As the twist increases, the uniformity of the yarn increases. Too small and the coating is loose. During the spinning process, due to friction and other reasons, it can move slightly along the axial direction of the thread, so the evenness of the evenness can be deteriorated. Covering usage spandex yarn is an elastic yarn formed by using spandex yarn as the core and covering the stretched spandex yarn with filament or short fiber yarn in a spiral manner.

Our Factory

Xiamen Lilong Spandex Co., Ltd was established in 2003, It specializes in the R&D and production of high-tech specialty fibers. Lilong company is the first spandex manufacturer in Fujian Province, which currently has more than 500 employees, with a total asset of 800 million yuan and covers an area of 130,000 square meters.
The company introduced complete sets of continuous spinning production technology. In May 2005, it officially commenced production, with an annual production capacity of 30,000 tons, The production line covers the main specifications ranging from 12D to 1680D. Over the years, Lilon has fully utilized its talent and technological advantages, continuously exploring and innovating in the field of high-tech special fibers. It independently developed high-temperature resistant, high-rebound, chlorine-resistant, phenol-resistant, and other differentiated spandex with stability. These products are widely used in textiles, clothing, woven tapes, and sanitary materials. Adhering to the spirit of "unity, positivity, development, and innovation", the company persists in the management policy of "promoting customer satisfaction with quality and meeting customer needs with innovation", winning customers and selling well worldwide.

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Certificate

FAQ

Q: What is covering usage spandex yarn?

A: Covering usage spandex yarn is an elastic yarn formed by covering the elongated spandex yarn with the spandex yarn as the core, and wrapping the elongated spandex yarn with the filament or short fiber yarn in a spiral manner.

Q: What is the difference between latex and spandex?

A: Latex and spandex are distinct materials used in clothing. Latex, derived from natural rubber, offers moderate elasticity and is used in items like swimwear. In contrast, spandex, a synthetic fiber, provides high elasticity and comfort, making it popular in sportswear and activewear. Spandex is more breathable, hypoallergenic, and versatile, while latex may require lubricants and can cause allergies in some individuals. The choice depends on specific clothing needs and wearer preferences.

Q: Does covering usage spandex yarn last long?

A: Elastane clothing is extremely durable when correctly washed. The fabric can withstand constant washing in cold water, so don't worry that you're washing it too much. Tight-fitting covering usage spandex yarn workout gear requires cleaning with every use, but you may be able to wear looser items two to three times before washing.

Q: Does heat destroy covering usage covering usage spandex yarn ?

A: Any covering usage spandex yarn or covering usage spandex yarn like material such as elastic or elastian will break down if exposed to the heat of a dryer. That is why all things containing things as elastic like material should be air dried or dried on a gentle cycle.

Q: Is covering usage spandex yarn a knit or woven fabric?

A: Spandex is a very elastic fibre. It can be used when making a woven or a knit fabric. A woven fabric with spandex in it will still behave like a woven fabric except the fibres themselves will stretch. A great example of this is stretch denim jeans.

Q: Is covering usage covering usage spandex yarn better than cotton?

A: Cotton is a natural fabric that is soft, breathable, and easy to care for, while spandex is a synthetic fabric that is highly stretchy and elastic, but less durable. So, if you're looking for a stretchy fabric with good recovery, spandex may be the way to go.

Q: What does hot water do to covering usage spandex yarn?

A: Use cold water: covering usage spandex yarn fabric is best washed in cold water. Hot water can weaken the elastic fibers, leading to loss of stretch and shape retention. The cold water helps preserve the integrity of the fabric while still effectively removing dirt and stains.

Q: What is the daily use of covering usage spandex yarn?

A: Versatility: Cotton spandex fabric is versatile and can be used for various clothing items, including leggings, T-shirts, jeans, and activewear, as well as for home decor and upholstery.

Q: Can you dry covering usage spandex yarn in the dryer?

A: Covering usage spandex yarn : Covering usage spandex yarn does not react well to heat, and therefore putting full covering usage spandex yarn clothing, such as a bathing suit or leggings, into the dryer will caused the fabric fibres to weaken and break. Clothing that contains a small amount of covering usage spandex yarn material, such as jeans, could be okay to put in the dryer.

Q: What is the melting point of covering usage spandex yarn?

A: Spandex fibers are damaged at high temperature. The melting temperature for spandex is about 240°C. high temperature from washing bath and dryer causes more spandex break.

Q: What is the composition of covering usage spandex yarn?

A: Chemical route to polyurethane polymer used in production of spandex. Spandex is mainly composed of a polyurea derived from the reaction of a diol and a diisocyanate. Two classes of spandex are defined by the "macrodiols".

Q: What happens if you heat covering usage spandex yarn?

A: The high temperatures required for heat transfer can potentially damage the spandex material, causing it to melt or lose its elasticity. Therefore, while it is technically possible to use heat transfer on spandex, it is generally not recommended due to the risk of damaging the material.

Q: Is covering usage spandex yarn more stretchy than elastane?

A: Elastane and covering usage spandex yarn are technically the same, composition and function-wise. Both are man-made fibers containing polyurethane (PU) and polyethylene glycol. Such chemical composition lends them their phenomenal elasticity. They can stretch up to 600% of their original length and recover without bagging or sagging.

Q: How do you make covering usage spandex yarn ?

A: Manufacturing process of spandex: Spandex fibers are manufactured in four different ways- melt extrusion, reaction spinning, solution dry spinning, and solution wet spinning. The initial step in all these methods is that of reacting monomers to produce a pre-polymer.

Q: Does covering usage spandex yarn shrink in cold water?

A: The good news is that covering usage spandex yarn doesn't shrink when you care for it properly. Here are some top tips to follow to make your fabric last long and ready for any party. When washing your covering usage spandex yarn , always make sure to use cold water and mild detergent.

Q: How is covering usage spandex yarn made?

A: Spandex fibers are produced by several spinning technologies. Typically, a concentrated solution of the polymer is drawn through spinnerets at temperatures where the solvent evaporates. Chemical route to polyurethane polymer used in production of spandex.

Q: What are the different types of spandex yarn?

A: Generally, spandex fabric can be woven in four ways. These are bare, core-spun, covered, and twisted yarn. Furthermore, yarn wholesale suppliers should consider the fabric style and wearing prerequisites when selecting spandex yarn. Thick stretch fabrics include stretch corduroy, stretch tarpaulin, stretch sturdy, etc.

Q: What are the methods of covering usage spandex yarn?

A: Typically there are 2 main yarn covering techniques. Traditional covering (single or double covering) and Air covering with intermingling. Given only for Polyester, we also produce Nylon and Acrylic air covered yarns for specific end use.

Q: Why is covering usage spandex yarn important to humans?

A: It is light and has high moisture wicking ability. It is also extremely stretchable and doesn't lose its elasticity with frequent use. What makes it the fabric of choice for athletes and gymnasts is it's low heat retention property and perfect body fitting ability without creating any pressure or tightness.

Q: What is the structure of covering usage spandex yarn?

A: Spandex is a lightweight, synthetic fiber that is used to make stretchable clothing such as sportswear. It is made up of a long chain polymer called polyurethane, which is produced by reacting a polyester with a diisocyanate. The polymer is converted into a fiber using a dry spinning technique.

As one of the most professional covering usage spandex yarn manufacturers and suppliers in China, we're featured by quality products and competitive price. Be free to wholesale bulk discount covering usage spandex yarn from our factory. Contact us for customized service.

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