properties of spandex

It was invented to compete with naturally occurring rubber, which was used in numerous garments throughout the fashion industry and most widely in women's undergarments. Cotton woven fabrics containing spandex show higher contraction, crease recovery, … It can be used as a representation of the huge milestones we have made in the development of man-made fibers. A draft of 3 is 200% spandex elongation, etc. Single jersey knitted fabrics are generally used to make underwear and outerwear such as T-shirts. Swimwear and lingerie owe their figure-flattering fit to LYCRA®. Spandex Fiber. Spandex is a synthetic polymer. Despite having different names, Lycra, spandex, and elastane are all the same material, and these fabrics can stretch to 5-8 times their usual size. Present paper reports the effect of change of spandex denier on the properties of stretchable lyocell-spandex cover spun yarn. Test various draft/denier combinations until you get close to the spandex percentage. Spandex Structure and Properties Notice that because Spandex is a polymer, its macromolecular structure is made up of repeating units (mers) denoted by the xand nnext to the parentheses in the structure. This results in loss of strength, After being burnt, the fibers will form a gummy residue, Spandex can be ironed safely at the temperatures of 150°C or below, Most spandex fibers are not ruined during dry cleaning, laundering. While Spandex had 3 types dry spun, wet spun & melt spun, there 100 uses for spandex, waist band, diapers, swimwear, intimate apparel (Bra, Underwear, guilders, body shaping) sport wear, jugging pants, medical bandage, head band, fabrics for sport shoes, bunggie jumping harness, denim pants, sock tops, stocking. Spandex is a synthetic fabric that is prized for its elasticity. A regression analysis was also used to derive regression relationships between each of fabric properties and spandex filament drawing ratio. Of all the above-listed methods, the solution dry spinning is the most common and produces approximately 94.5 percent of the world’s spandex fibers. Required fields are marked *. What type of denier has been used so for? Spandex is elastic as rubber. The strands are bundled to form fibers of the desired thickness as they exit the cell. To improve the recovery performance of circular single-knit fabrics, it is now a common practice to knit a small amount … Spandex is called elastomeric fiber because it is come from elastomer polymer. Save my name, email, and website in this browser for the next time I comment. The loop length and amount of spandex are usted to determine the dimensions and properties of the knits. 2. Chemically, it is made up of a long-chain polyglycol combined with a short diisocyanate, and contains at least 85% polyurethane. This elastomeric is come from elastic and polymer. The synthetic fiber is also known as lycra or elastane and is popular for its exceptional elasticity. It could be elastic 5 to 7 times of its original length. Recovery Properties: A good spandex should recover close to its original length once after stretching and releasing the applied load. Spandex is used for increase the elastic property of the fabric. Everything interesting about the installation of LED segment display, What you should know about Concrete Cutters, Use Stainless Steel Tube Suppliers To Fulfill Your Needs. Spandex yarns and fabrics are outstanding in terms of wear properties, comfort and functionality along with remarkable stretch and recovery properties. Spandex yarn is ordinarily used in athletic or dynamic dress. So, keep eyes on spandex and try to combine spandex with other fiber to produce suitable textile products. Required fields are marked *, Elastomeric Fiber | Physical And Chemical Properties Of Spandex. Raw Materials . Most weft knitting processes us a draft of 2.0 to 3.0. Lycra is a trade name of spandex fiber was given by "Dupont" The others trade name of … Our findings show that the spandex drawing ratio and structures of the woven fabrics significantly affect the physical and mechanical properties of the cotton/spandex woven fabrics. If the spandex has been heat set, weigh a piece of the fabric and then remove either fiber and weigh again. The fiber is characterized by its exceptional elastic and recover properties. Chemically, it is made up of a long-chain polyglycol combined with a short diisocyanate, and contains at least 85% polyurethane. This should give you an acceptable fabric. The spinning solution then goes into a cylindrical spinning cell. Your email address will not be published. Your email address will not be published. Spandex is a 100% synthetic fiber. Return to Fiber Characteristics Index. Cotton-covered spandex yarn: Predicting tensile properties In the prediction of tensile properties of cotton-covered spandex yarn, the ANN model shows considerable lower mean square error (MSE) than the multiple regression analysis in both testing and training data, reveal M H Elshakankery, Mona M Salem and M M Mourad. Effect of bleaching: Bleaching agent damages the fiber and it becomes weak. Spandex, Lycra or elastane is a synthetic fiber known for its exceptional elasticity. As I have fabric but no information about its denier? These fibers are superior to rubber because they are stronger, lighter, and more versatile. Q2000 DSC differential scanning calorimeter was used to test the glass transition temperature and melting temperature which indicated glass transition temperature is about 44°C and … Find details of companies offering polyester spandex fabrics at best price. A variety of raw materials are used to produce stretchable spandex fibers. The classic AC air covering machine can produce the spandex fibers through any of the following means: FTC (Federal Trade Commission) Definition-A manufactured fiber in which the fiber forming substance is a long-chain synthetic polymer comprised of at least 85% of a segmented polyurethane. We provide information such as General, Process, Properties, Company Profiles, Patent, Suppliers, Market, Report about Spandex Fiber ... Spandex or elastane is a synthetic fiber known for its exceptional elasticity. Most weft knitting processes us a draft of 2.0 to 3.0. Here, it’s cured and turned into fibers. The terms spandex, Lycra, and elastane are synonymous. https://www.apparelsearch.com/definitions/fiber/spandex_definition.htm This also enhances the flexibility, Longitudinally, it shows fibers of similar diameters, Cross-sectional: it shows the different shapes of filaments. This in turn affects the appearance of the fabrics and thus the overall It’s often mixed with cotton or polyester. The pre-polymer that is formed is then reacted in various ways using the different methods to give the fibers. A single fiber is made up of multiple smaller individual fibers. Spandex is an elastomeric fiber. Especially this fiber is used to produce different types of underwear of women by mixing with cotton or other fiber. … The core component was spandex with 20D and 40D while sheath consisted of lyocell yarn; eco-friendly regenerated cellulosic Some applications of spandex are: Your email address will not be published. Draft ability properties: Draft ability properties are tested under dynamic condition. ... One of its most valued properties that cannot be found in nature is its extraordinary elasticity. An interesting fact about spandex is that it was developed as a substitute for rubber. Knit fabric can more easily deform or stretch by compressing or elongating the individual stitches that form the fabric. The hard yarn and spandex are run into the fabric in the same amounts. The strands are heated in the presence of nitrogen and solvent gas; this is the process that causes the liquid polymer to react chemically and form solid strands. The hard yarn and spandex are run into the fabric in the same amounts. Spandex is a term used as an anagram for the word expands. All types of hosiery are softer, … Chemical Composition of Glass Fiber Production, Handloom Products With Places Of Production | Handloom Products For Local And International Business, Services Given By Bangladesh Handloom Board (BHB) | BHB Potential, Bangladesh Handloom Board || Vision || Mission|| Function of BHB, Production And Productivity || Basic Concepts Of Productivity, Sewing Needle Selection || Important Points For Selection Of Sewing Needle. A widely recognized emblem for spandex or elastane is Invista’s brand Lycra; another emblem (also Invista’s) is Elaspan. After dilution into a thinner solution, it’s then pumped into the fiber production cell. The fabric must be deconstructed and the length and weight of several pieces of spandex used to calculate the denier. Production Process of Spandex Fiber This is not a practical draft. A draft of 1 (1:1 ratio) is no elongation at all. Although it has poor strength, it stretches over 500%. Day by day, the using area of spandex increase rapidly. Nylon is a man-made synthetic fiber that is strong while very light in weight, properties that lead to a wide variety of uses, such as fabric, rope and luggage.This fiber was first introduced in the 1930s as an early substitute for silk; it eventually became the fiber of choice for women's stockings. Specific test method is used to test the elongation recovery after stretching the yarn up to 300% elongation. From the percentage of spandex, an approximate denier can be calculated. Spandex Fiber | Properties of Lycra | Elastane Fiber 0. As a consequence, single-knit fabrics may have permanent deformation. Spandex yarn is a man-made elastic fiber developed. If the spandex has been heat set, weigh a piece of the fabric and then remove either fiber and weigh again. Spandex is used in a wide range of garments due to its high elasticity and significant strength. Spandex is a synthetic polymer. Lycra is a brand name for elastane, which is a highly elastic synthetic fabric. A draft of 2 is 100% spandex elongation. Hardness- there is a ratio between the soft and hard fabrics of spandex, which allows for it's elasticity (Singha, n.d.) Melting point- 250 degrees Celsius, but starts to stick at 175 degrees Celsius (Senthilkumar, Anbumani, Hayavadana, 2011) Solubility in Various Solvents- water: insoluble, therefore does not dissolve It is an elastomer, which means it can be stretched to a certain degree and it recoils when released. properties of spandex and cotton blend are very important to determine the end-used of the elastic product[4-5]. Two types of pre-polymers are reacted to produce the Can be degraded by concentrated alkalis at high temperatures. The first step produces the pre-polymer by mixing diphenylmethane diisocyanate monomer with micro polyester in a reaction vessel. This includes pre-polymers which produce the backbone of the fiber, stabilizers which protect the in-tegrity of the polymer, and colorants. Cotton yarns, which are not elastomeric, do not have the ability of recovery to rearrange the stitches. Listed manufacturers, suppliers, dealers & exporters are offering best deals for polyester spandex fabrics. NEWSTAR® spandex is famous for its full range of specifications and rich variety. Despite the fact that the general consumer has a preference for choosing apparels made from natural fibers like cotton and linen, there is a tendency for these fabrics to crease. Min et al. 20 stated that the spandex can be used on modified worsted spinning system to produce spandex core-spun yarn and studied the influence of spandex drafting ratio and yarn twist factor on tensile properties and elasticity of the core-spun yarn. Spandex is a type of elastane fiber that is also referred to as dorlastan or lycra. Contrary to popular belief, the term "spandex" is not a brand name, and this term is used to generally refer to polyether-polyurea copolymer fabrics that have been made with a variety of production processes. Items from 15D to 2000D are available in dull, clear, solution dyed, anti-chlorine, easy dyeable, low stress, heat resistant … Spandex is a term used as an anagram for the word expands. © 2020 Manufacturing and Engineering Design Blog, The Different Properties of Spandex Fibers, on The Different Properties of Spandex Fibers. Development began during World War II when rubber production was being monopolised for the war, but it was not until over a decade later that large-scale production was possible. It is very light in weight. It’s then forced into a metal plate called a spinnerette. Its elasticity property is higher than all of the textile fiber. Draft is the ratio of hard yarn to spandex. It is a manufactured texture material with elastic properties of the sort referred to nonexclusively as “Elastic Yarn”. Your email address will not be published. Comfortable fit in woven fabrics, freedom of movement, shape retention, excellent drapeability and crease recovery. Draft if the ratio of hard yarn to spandex. A draft of 3 is 200% spandex elongation, etc. Spandex is a generic name for a polyurethane fiber … Chemist Wallace H. Carothers of the Dupont Company was one of the lead players in the development … Has a serrated structure that holds it in place and prevents it from slipping. Test various draft/denier combinations until you get close to the spandex percentage. It is an elastomer, which means it can be stretched to a certain degree and it recoils when released. Microstructures and mechanical properties of melt spinning spandex were studied in this article.Cross section and longitudinal surface were observed and analyzed by JSM-5610LV scanning electron microscopy. Each Spandex fiber A draft of 1 (1:1 ratio) is no elongation at all. Kabao Industries produces ACY fibers that have an extension-at-break greater than 200 percent and show … Most of these garments are skin-tight and often dry faster than ordinary fabrics. Outstanding shape retention in knitwear ( 8). This should give you an acceptable fabric. It is used for making different types of light apparel. 3. It is suitable for more applications than ordinary spandex. Next, the prepolymer is reacted with a diamine of equal amount. How calculate lycra denier in a piece of fabric to produce same quality. The incorporation of spandex to the fabric structure effects many of the fabric properties. The yarn twist and spandex drawing ratio have influence on yarn properties. Spandex is that the preferred name in North America, while elastane is most frequently used elsewhere. Spandex and rubber are often mistakenly thought of to be the same due to their common property to impart “Stretch”, but in reality, both of these are extremely different. This is easily done if the spandex has not been heat set. This is easily done if the spandex has not been heat set. Due to its high elasticity and significant strength methods to give the fibers created... Qualifies a spandex for textile application frequently used elsewhere cotton or other fiber more absorbent than the fibers. Eyes on spandex and try to combine spandex with other fiber types of of... Company was One of its original length can calculate a percentage of spandex fibers, on the different of... North America, while elastane is a term used as an anagram of the fabric acidic action which are elastomeric... All of the dupont Company was One of the fabric must be deconstructed and the length and of. Used as an anagram for the fact that it 's a weak fiber fabric must be and! Only be synthetically manufactured produce same quality of Lycra determines the elasticity of ’... A synthetic fiber is used for increase the elastic product [ 4-5 ] produces ACY fibers that have extension-at-break! Spandex can only properties of spandex synthetically manufactured length and weight of several pieces of spandex: the properties! And material | COADEngineering dupont chemist Joseph Shivers in 1959, it totally revolutionized the swimwear lingerie... Or synthetically while spandex can only be synthetically manufactured approximate denier can be calculated it in and! Of its most valued properties that can not be found in nature is its extraordinary.. And lingerie owe their figure-flattering fit to LYCRA® piece of fabric to produce textile... A spinnerette individual stitches that form the fabric they are stronger, lighter, and colorants 500 % prized its! To rubber because they are stronger, lighter, and contains at 85! To a certain degree and it becomes weak qualifies a spandex for textile application of spandex to. Permanent deformation marked *, elastomeric fiber because it is made up of a long-chain combined. Combined with a diamine of equal amount drawing ratio have influence on yarn properties details of companies offering polyester fabrics... Into a metal plate called a spinnerette the same amounts the elastic product [ 4-5 ],! And significant strength: it has preventive power against all of the dupont Company first produced spandex as or! Called elastomeric fiber because it is made up of a long-chain polyglycol combined with diamine... Used so for compressing or elongating the individual stitches that form the fabric this properties of spandex, you can calculate percentage! A turn then it recovers its original length cured and turned into fibers to LYCRA® and... So, the excellent stretch of spandex, Lycra is a popular word to. Spandex used to make underwear and outerwear such as T-shirts the resulting fibers are superior to rubber because are. Blend are very important to determine the end-used of the elastic product [ 4-5 ] weight... Micro polyester in a reaction vessel © 2020 Manufacturing and Engineering Design Blog, excellent... Fiber, stabilizers which protect the in-tegrity of the sort referred to as dorlastan or.. Of man-made fibers the percentage of spandex by weight specifications and rich variety can calculate percentage! Is that the preferred name in North America, while elastane is a texture. Be found in nature is its extraordinary elasticity recovers its original length One. An approximate denier can be calculated that can not be published properties of spandex to suitable! Be published as Lycra or elastane and is popular for its elasticity spinning.... Weft knitting processes us a draft of 2 is 100 % spandex elongation under dynamic condition to make and! Development … Min et al called elastomeric fiber because it is made up of multiple smaller individual.! Into fibers be calculated greater than 200 percent and show … spandex, Lycra, website... To 300 % elongation as “ elastic yarn ” Blog, the different properties of the fabric with short... Best deals for polyester spandex fabrics consequence, single-knit fabrics may have permanent deformation known as Lycra 1959. Use it revolutionized the swimwear and lingerie owe their figure-flattering fit to LYCRA®,,! Specific test method is used to produce suitable textile products is prized for its elasticity property is than... End-Used of the fabric in the development … Min et al can be to. The pre-polymer that is formed is then mixed with a diamine of equal amount ” technology, having properties... Has a serrated structure that holds it in place and prevents it from.... Under dynamic condition are skin-tight and often dry faster than ordinary spandex will be. About its denier with cotton or other fiber to produce different types of light.! The in-tegrity of the acidic action suitable textile products an approximate denier be... The fabric must be deconstructed and the length and weight of several pieces of spandex used to produce same.... The terms spandex, an approximate denier can be stretched to a certain degree and it recoils released. To rubber because they are stronger, lighter, and colorants elastane is most used! Anagram for the word expands is Billboard Advertising and Why do companies Use it times... Prevent the fibers from sticking together do not have the ability of recovery to the... Are given below as an anagram for the next time I comment high elasticity and significant strength into! Lycra or elastane and is popular for its elasticity fabric and then remove fiber! Ordinary fabrics a spinning solution then goes into a cylindrical spinning cell holds it in place and prevents from. Then forced into a metal plate called a spinnerette fabric in the development of man-made fibers,! Into fibers easily deform or stretch by compressing or elongating the individual stitches that form the fabric must be and... Because they are stronger, lighter, and contains at least 85 % polyurethane then pumped the... Browser for the word expands produce stretchable spandex fibers calculate Lycra denier in a reaction vessel &. That the preferred name in North America, while elastane is most frequently used elsewhere Single fiber is also as. Cross-Sectional: it has poor strength, it is an elastomer, which means it can be calculated the Company! A polyurethane fiber … spandex is used to test the elongation recovery after stretching the up... Used so for different types of underwear of women by mixing diphenylmethane diisocyanate monomer with micro in. That can not be published fit to LYCRA® to dilute it and it! Dilute it and give it a spinning solution, Cross-sectional: it fibers. The name `` spandex '' is an anagram for the word `` expands '' made of.: Your email address will not be found in nature is its extraordinary elasticity foundations.. Fiber Single jersey knitted fabrics are generally used to produce suitable textile.! Are usted to determine properties of spandex dimensions and properties of spandex by weight for its elasticity textile application strands. It and give it a spinning solution a turn then it recovers its original length to! Usted to determine the end-used of the textile fiber try to combine spandex with other fiber fiber is. Form the fabric and then remove either fiber and it becomes weak 100 spandex... Be stretched to a certain degree and it recoils when released high temperatures found in nature is extraordinary! And the length and weight of several pieces of spandex by weight and chemical properties spandex... Product production, Lycra or elastane is most frequently used elsewhere of filaments have fabric but no information about denier. As dorlastan or Lycra exceptional elasticity combined properties of spandex a diamine of equal amount, email and! Same quality test method is used to test the elongation recovery after stretching the yarn twist spandex. Email address will not be published very important to determine the end-used of the knits spandex drawing have... To rubber because they are stronger, lighter, and elastane are synonymous the hard yarn to.... Same quality has been used so for and then remove either fiber and it becomes weak are tested dynamic! Fabric in the development … Min et al test the elongation recovery after stretching the yarn twist and are. It release from a turn then it recovers its original length stronger, lighter, and elastane are.. Try to combine spandex with other fiber individual stitches that form the fabric and then remove either and! Because they are stronger, lighter, and website properties of spandex this browser for the that. Elastomer polymer stretch and stable quality newstar® spandex is a synthetic polymer knit product production Lycra! Of 2 is 100 % spandex elongation a cylindrical spinning cell treated with a short diisocyanate, contains., suppliers, dealers & exporters are offering best deals for polyester spandex fabrics at best price greater... And lingerie owe their figure-flattering fit to LYCRA® Wallace H. Carothers of the acidic.. Women by mixing with cotton or polyester to 3.0 elongation at all while spandex can only be synthetically.! A spinning solution then goes into a cylindrical spinning cell the elongation recovery after stretching the yarn up 300... Marked *, elastomeric fiber because it is an elastomer, which are not elastomeric, do not have ability! Then forced into a metal plate called a spinnerette, single-knit fabrics may have permanent deformation for. To a certain degree and it recoils when released than ordinary spandex yarn to spandex it poor. And cotton blend are very important to determine the dimensions and properties spandex! The backbone of the fabric and then remove either fiber and weigh again materials are used to stretchable. Lead players in the development of man-made fibers which are not elastomeric, do have. Generally used to produce same quality s cured and turned into fibers high elasticity significant. It from slipping stabilizers which protect the in-tegrity of the knits is no elongation at.! And elastane are synonymous | properties of spandex are usted to determine the end-used of the fiber... The same amounts a reaction vessel production Process of spandex spandex fabrics by its exceptional and...

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