Textile

History

Textiles themselves are too fragile to survive across millennia; the tools used for spinning and weaving make up most of the prehistoric evidence for textile work. The earliest tool for spinning was the spindle, to which a whorl was eventually added. The weight of the whorl improved the thickness and twist of the spun thread. Later, the spinning wheel was invented. Historians are unsure where; some say China, others India.

The precursors of today's textiles include leaves, bark, fur pelts, and felted cloths.

The Banton Burial Cloth, the oldest existing example of warp ikat in Southeast Asia, is displayed at the National Museum of the Philippines. The cloth was most likely made by the native Asian people of northwest Romblon. The first clothes, worn at least 70,000 years ago and perhaps much earlier, were probably made of animal skins and helped protect early humans from the elements. At some point, people learned to weave plant fibres into textiles.

The discovery of dyed flax fibres in a cave in the Republic of Georgia dated to 34,000 BCE suggests that textile-like materials were made as early as the Paleolithic era.

The speed and scale of textile production have been altered almost beyond recognition by industrialization and the introduction of modern manufacturing techniques. However, for the main types of textiles, plain weave, twill, or satin weave, there is little difference between the ancient and modern methods.

Textile industry

The textile industry grew out of art and craft and was kept going by craft guilds. In the 18th and 19th centuries, during the Industrial Revolution, it became increasingly mechanized. In 1765, when a machine for spinning wool or cotton called the spinning jenny was invented in the United Kingdom, textile production became the first economic activity to be industrialized. In the 20th century, science and technology were driving forces. The textile industry exhibits inherent dynamism, influenced by a multitude of transformative changes and innovations within the domain. Textile operations can experience ramifications arising from shifts in international trade policies, evolving fashion trends, evolving customer preferences, variations in production costs and methodologies, adherence to safety and environmental regulations, as well as advancements in research and development.

The textile and garment industries exert a significant impact on the economic systems of numerous countries engaged in textile production.

Naming

Most textiles were called by their base-fibre generic names, their place of origin, or were put into groups based loosely on manufacturing techniques, characteristics, and designs.

Bearskin (bearskin cloth) may have received its name from its "shaggy nap".

"Nylon", "olefin", and "acrylic" are generic names for some of the more commonly used synthetic fibres.

Related terms

The related words "fabric" and "cloth" and "material" are often used in textile assembly trades (such as tailoring and dressmaking) as synonyms for textile. However, there are subtle differences in these terms in specialized usage. Material is an extremely broad term basically meaning consisting of matter, and requires context to be useful. A fabric is a material made through weaving, knitting, spreading, felting, stitching, crocheting or bonding that may be used in the production of further products, such as clothing and upholstery, thus requiring a further step of the production. Cloth may also be used synonymously with fabric, but often specifically refers to a piece of fabric that has been processed or cut.

• Greige goods: Textiles that are raw and unfinished are referred to as greige goods. After manufacturing, the materials are processed and finished.
• Piece goods: Piece goods were textile materials sold in cut pieces as specified by the buyer. Piece goods were either cut from a fabric roll or made to a specific length, also known as yard goods.

Types

Textiles are various materials made from fibres and yarns. The term "textile" was originally only used to refer to woven fabrics, but today it covers a broad range of subjects. Textiles are classified at various levels, such as according to fibre origin (natural or synthetic), structure (woven, knitted, nonwoven), finish, etc. However, there are primarily two types of textiles:

Consumer textiles

Textiles have an assortment of uses, the most common of which are for clothing and for containers such as bags and baskets. In the household, textiles are used in carpeting, upholstered furnishings, window shades, towels, coverings for tables, beds, and other flat surfaces, and in art. Textiles are used in many traditional hand crafts such as sewing, quilting, and embroidery.

Technical textiles

Textiles produced for industrial purposes, and designed and chosen for technical characteristics beyond their appearance, are commonly referred to as technical textiles. Technical textiles include textile structures for automotive applications, medical textiles (such as implants), geotextile (used for reinforcement of embankments), agrotextiles (textiles for crop protection), and protective clothing (such as clothing resistant to heat, radiation, or molten metals, and clothing resistant to puncture (for example, stab-resistant or bulletproof clothing)).

In the workplace, textiles can be used in industrial and scientific processes such as filtering. Miscellaneous uses include flags, backpacks, tents, nets, cleaning rags, and transportation devices such as balloons, kites, sails, and parachutes; textiles are also used to provide strengthening in composite materials such as fibreglass and industrial geotextiles.

Due to the often highly technical and legal requirements of these products, these textiles are typically tested to ensure they meet stringent performance requirements. Other forms of technical textiles may be produced to experiment with their scientific qualities and to explore the possible benefits they may have in the future. For example, threads coated with zinc oxide nanowires, when woven into fabric, have been shown capable of "self-powering nanosystems", using vibrations created by everyday actions like wind or body movements to generate energy.

Smart textiles

Smart textiles are fabrics incorporating sensing, communication, or responsive functions, such as wearable health monitoring garments,temperature-regulating fabrics, conductive textiles, and textile-based sensors.This could potentially be applied in fields such as healthcare, sports monitoring, military equipment, and fashion technology. However, the unique composition and embedded electronic elements of these e-textiles present significant challenges in end-of-life management, particularly in recycling and sustainable design.

Significance

Textiles are component of basic needs like food and shelter. Textiles meet clothing needs, keeping people warm in the winter and cool in the summer. There are several applications for textiles, such as medical textiles, intelligent textiles, and automotive textiles.

Serviceability in textiles

The term "serviceability" refers to a textile product's ability to meet the needs of consumers. The emphasis is on knowing the target market and matching the needs of the target market to the product's serviceability. Serviceability or performance in textiles is the ability of textile materials to withstand various conditions, environments, and hazards. Aesthetics, durability, comfort and safety, appearance retention, care, environmental impact, and cost are the serviceability concepts employed in structuring the material.

Components

Fibres, yarns, fabric construction, finishes and design are components of a textile product. The selection of specific components varies with the intended use, therefore the fibres, yarns, and fabric manufacturing systems are selected with consideration of the required performance.

Use and applications

Other uses

Textiles, textile production, and clothing were necessities of life in prehistory, intertwined with the social, economic, and religious systems. Other than clothing, textile crafts produced utilitarian, symbolic, and opulent items. Archaeological artifacts from the Stone Age and the Iron Age in Central Europe are used to examine prehistoric clothing and its role in forming individual and group identities.

Source of knowledge

Artifacts unearthed in various archaeological excavations informs us about the remains of past human life and their activities. Dyed flax fibres discovered in the Republic of Georgia indicate that textile-like materials were developed during the Paleolithic period. Radiocarbon dates the microscopic fibres to 36,000 years ago, when modern humans migrated from Africa.

Several textile remnants, such as the Inca Empire's textile arts remnants, which embody the Incas' aesthetics and social ideals, serve as a means for disseminating information about numerous civilizations, customs, and cultures.

There are textile museums that display history related to many aspects of textiles. A textile museum raises public awareness and appreciation of the artistic merits and cultural significance of the world's textiles on a local, national, and international scale. The George Washington University Museum and Textile Museum in Washington, D.C., was established in 1925.

Narrative art

The Bayeux Tapestry is a rare example of secular Romanesque art. The art work depicts the Norman Conquest of England in 1066.

Decorative art

Textiles are also used for decorative art. Appliqué work of pipili is decorative art of Odisha, a state in eastern India, used for umbrellas, wall hangings, lamp shades, and bags. To make a range of decorative products, coloured cloth in the shapes of animals, birds, flowers, are sewn onto a base cloth.

Architextiles

Architextiles, a combination of the words architecture and textile, are textile-based assemblages. Awnings are a basic type of architectural textile. Mughal Shahi Lal Dera Tent, which was a movable palace, is an example of the architextiles of the Mughal period.

Currency

Textiles had been used as currency as well. In Africa, textiles were used as currency in addition to being used for clothing, headwear, swaddling, tents, sails, bags, sacks, carpets, rugs, curtains, etc. Along the east–west axis in sub-Saharan Africa, cloth strip, which was typically produced in the savannah, was used as a form of currency.

Votive offering

Textiles were among the objects offered to the gods [votive offering] in ancient Greece for religious purposes.

Fibre

The smallest component of a fabric is fibre; fibres are typically spun into yarn, and yarns are used to make fabrics. Fibres are very thin and hair-like structures. The sources of fibres may be natural, synthetic, or both.

Global consumption

Global fibre production per person has increased from 8.4 kilograms in 1975 to 14.3 kilograms in 2021. After a modest drop due to COVID-19 pandemic in 2020, global fibre output rebounded to 113 million tons in 2021. Global fibre output roughly doubled from 58 million tons in 2000 to 113 million tons in 2021 and is anticipated to reach 149 million tons in 2030.

The demand for synthetic fibres is increasing rapidly. This has numerous causes. Reasons include its low price, the demand-supply imbalance of cotton, and its [Synthetic fibres'] versatility in design and application. Synthetic fibres accounts for 70% of global fibre use, mainly polyester. By 2030, the synthetic fibre market will reach 98.21 billion US dollars. From 2022 to 2030, the market is anticipated to increase by 5.1% per year.

Fibre sources

• Natural fibres are obtained from plants, animals and minerals. Since prehistoric times, textiles have been made from natural fibres. Natural fibres are further categorized as cellulosic, protein, and mineral.
• Synthetic or manmade fibres are manufactured with chemical synthesis.
• Semi-synthetic: A subset of synthetic or manmade fibres is semi-synthetic fibre. Rayon is a classified as a semi-synthetic fibre, made with natural polymers.

Monomers are the building blocks of polymers. Polymers in fibres are of two types: additive or condensation. Natural fibres, such as cotton and wool, have a condensation polymer type, whereas synthetic fibres can have either an additive or a condensation polymer type. For example, acrylic fibre and olefin fibres have additive polymers, and nylon and polyester are condensation polymers.

Types

Fibre properties

Fibre properties influence textile characteristics such as aesthetics, durability, comfort, and cost. Fineness is one of the important characteristics of the fibres. They have a greater length-to-width ratio [100 times the diameter]. Fibres need to be strong, cohesive, and flexible. The usefulness of fibres are characterized on the basis of certain parameters such as strength, flexibility, and length to diameter ratio, and spinnability. Natural fibres are relatively short [staple] in length. Synthetic fibres are produced in longer lengths called filaments. Silk is the only natural fibre that is a filament. The classification of fibres is based on their origin, derivation, and generic types.

Certain properties of synthetic fibres, such as their diameter, cross section, and colour, can be altered during production.

Cotton: Cotton has a long history of use in the clothing due to its favourable properties. This fibre is soft, moisture-absorbent, breathable, and is renowned for its long durability.

Blends (blended textiles)

Fabric or yarn produced with a mixture of two or more types of different fibres, or yarns to obtain desired traits. Blending is possible at various stages of textile manufacturing. Final composition is liable for the properties of the resultant product. Natural and synthetic fibres are blended to overcome disadvantage of single fibre properties and to achieve better performance characteristics and aesthetic effects such as devoré, heather effect, cross dyeing and stripes pattern etc. Clothing woven from a blend of cotton and polyester can be more durable and easier to maintain than material woven solely from cotton. Other than sharing functional properties, blending makes the products more economical.

Union or Union fabrics is the 19th century term for blended fabrics. While it is no longer in use. Mixture or mixed cloth is another term used for blended cloths when different types of yarns are used in warp and weft sides.

Blended textiles are not new.

• Mashru was a 16th-century fabric, is one of the earliest forms of "mixed cloth", a material composed of silk and cotton.
• Siamoise was a 17th-century cotton and linen material.

Composition

Fibre composition the fibre blend composition of mixtures of the fibres, is an important criterion to analyse the behaviour, properties such as functional aspects, and commercial classification of the merchandise.

The most common blend is cotton and polyester. Regular blended fabric is 65% polyester and 35% cotton. It is called a reverse blend if the ratio of cotton predominates—the percentage of the fibres changes with the price and required properties.

Blending adds value to the textiles; it helps in reducing the cost (artificial fibres are less expensive than natural fibres) and adding advantage in properties of the final product. For instance, a small amount of spandex adds stretch to the fabrics. Wool can add warmth.

Uses of different fibres

Natural fibres

Plant

• Grass, rush, hemp, and sisal are all used in making rope. In the first two, the entire plant is used for this purpose, while in the last two, only fibres from the plant are used. Coir (coconut fibre) is used in making twine, and also in floormats, doormats, brushes, mattresses, floor tiles, and sacking.
• Straw and bamboo are both used to make hats. Straw, a dried form of grass, is also used for stuffing, as is kapok.
• Fibres from pulpwood trees, cotton, rice, hemp, and nettle are used in making paper.
• Cotton, flax, jute, hemp, modal, banana, bamboo, lotus, eucalyptus, mulberry, and sugarcane are all used in clothing. Piña (pineapple fibre) and ramie are also fibres used in clothing, generally with a blend of other fibres such as cotton. Nettles have also been used to make a fibre and fabric very similar to hemp or flax. The use of milkweed stalk fibre has also been reported, but it tends to be somewhat weaker than other fibres like hemp or flax.
• The inner bark of the lacebark tree is a fine netting that has been used to make clothing and accessories as well as utilitarian articles such as rope.
• Acetate is used to increase the shininess of certain fabrics such as silks, velvets, and taffetas.
• Seaweed is used in the production of textiles: a water-soluble fibre known as alginate is produced and is used as a holding fibre; when the cloth is finished, the alginate is dissolved, leaving an open area.
• Rayon is a manufactured fibre derived from plant pulp. Different types of rayon can imitate feel and texture of silk, cotton, wool, or linen.

Fibres from the stalks of plants, such as hemp, flax, and nettles, are also known as 'bast' fibres. Hemp fibre is yellowish-brown fibre made from the hemp plant. The fibre characteristics are coarser, harsher, strong and lightweight. Hemp fibre is used primary to make twine, rope and cordage.

Animal

Animal textiles are commonly made from hair, fur, skin, or silk (in the case of silkworms).

• Wool refers to the hair of the domestic sheep or goat, which is distinguished from other types of animal hair in that the individual strands are coated with scales and tightly crimped, and the wool as a whole is coated with a wax mixture known as lanolin (sometimes called wool grease), which is waterproof and dirtproof. The lanolin and other contaminants are removed from the raw wool before further processing. Woollen refers to a yarn produced from carded, non-parallel fibre, while worsted refers to a finer yarn spun from longer fibres which have been combed to be parallel.
  • Other animal textiles which are made from hair or fur are alpaca wool, vicuña wool, llama wool, chiengora, shatoosh, yak fibre and camel hair, generally used in the production of coats, jackets, ponchos, blankets, and other warm coverings.
  • Cashmere, the hair of the Indian cashmere goat, and mohair, the hair of the North African angora goat, are types of wool known for their softness. Pashmina is a type of very fine cashmere wool. Used in the production of sweaters and scarfs.
  • Angora refers to the long, thick, soft hair of the angora rabbit. Qiviut is the fine inner wool of the muskox.
• Silk is an animal textile made from the fibres of the cocoon of the Chinese silkworm which is spun into a smooth fabric prized for its softness. There are two main types of the silk: 'mulberry silk' produced by the Bombyx mori, and 'wild silk' such as Tussah silk (wild silk). Silkworm larvae produce the first type if cultivated in habitats with fresh mulberry leaves for consumption, while Tussah silk is produced by silkworms feeding purely on oak leaves. Around four-fifths of the world's silk production consists of cultivated silk. Silk products include pillow covers, dresses, tops, skirts, bed sheets, curtains.

Microbes

Bacterial cellulose can be made from industrial organic and agricultural waste, and used as material for textiles and clothing.

Mineral

• Asbestos and basalt fibre are used for vinyl tiles, sheeting and adhesives, "transite" panels and siding, acoustical ceilings, stage curtains, and fire blankets.
• Glass fibre is used in the production of ironing board and mattress covers, ropes and cables, reinforcement fibre for composite materials, insect netting, flame-retardant and protective fabric, soundproof, fireproof, and insulating fibres. Glass fibres are woven and coated with Teflon to produce beta cloth, a virtually fireproof fabric which replaced nylon in the outer layer of United States space suits since 1968.
• Metal fibre, metal foil, and metal wire have a variety of uses, including the production of cloth-of-gold and jewellery. Hardware cloth (US term only) is a coarse woven mesh of steel wire, used in construction. It is much like standard window screening, but heavier and with a more open weave.

Minerals and natural and synthetic fabrics may be combined, as in emery cloth, a layer of emery abrasive glued to a cloth backing. Also, "sand cloth" is a US term for fine wire mesh with abrasive glued to it, employed like emery cloth or coarse sandpaper.

Synthetic

In the 20th century, they were supplemented by artificial fibres made from petroleum. Textiles are made in various strengths and degrees of durability, from the finest microfibre made of strands thinner than one denier to the sturdiest canvas.

Synthetic textiles are used primarily in the production of clothing, as well as the manufacture of geotextiles. Synthetic fibres are those that are constructed by humans through chemical synthesis.

• Polyester fibre is used in all types of clothing, either alone or blended with fibres such as cotton.
• Aramid fibre (e.g. Twaron) is used for flame-retardant clothing, cut-protection, and armour.
• Acrylic is a fibre used to imitate wools, including cashmere, and is often used in replacement of them.
• Nylon is a fibre used to imitate silk; it is used in the production of pantyhose. Thicker nylon fibres are used in rope and outdoor clothing.
• Spandex (trade name Lycra) is a polyurethane product that can be made tight-fitting without impeding movement. It is used to make activewear, bras, and swimsuits.
• Olefin fibre is a fibre used in activewear, linings, and warm clothing. Olefins are hydrophobic, allowing them to dry quickly. A sintered felt of olefin fibres is sold under the trade name Tyvek.
• Ingeo is a polylactide fibre blended with other fibres such as cotton and used in clothing. It is more hydrophilic than most other synthetics, allowing it to wick away perspiration.
• Lurex is a metallic fibre used in clothing embellishment.
• Milk proteins have also been used to create synthetic fabric. Milk or casein fibre cloth was developed during World War I in Germany, and further developed in Italy and America during the 1930s. Milk fibre fabric is not very durable and wrinkles easily, but has a pH similar to human skin and possesses anti-bacterial properties. It is marketed as a biodegradable, renewable synthetic fibre.
• Carbon fibre is mostly used in composite materials, together with resin, such as carbon fibre reinforced plastic. The fibres are made from polymer fibres through carbonization.

Production methods

Textile manufacturing has progressed from prehistoric crafts to a fully automated industry. Over the years, there have been continuous improvements in fabric structure and design.

Important parameters in fabric selection:

The primary consideration in fabric selection is the end use. The fabric needs vary greatly depending on the application. Similar types of fabric may not be suitable for all applications.

Fabric weight is an important criteria while producing different fabrics. A carpet requires a fabric with 1300 GSM, but a robe may be made with 160 GSM. Certainly, fabrics for clothes and carpets have distinct weights.

Stretchable fabrics have greater movability and are thus more comfortable than fabrics with no stretch or less stretch.

Textile exports

According to the UN Commodity Trade Statistics Database, the global textiles and apparel export market reached $772 billion in 2013.

Changing dynamics of the market

China is the largest exporter of textile goods. Most of China's exports consist of apparel, apparel accessories, textile yarns, and textile products. The competitive advantages of the China are low prices and abundant labor, lowered commercial obstacles, and a ready supply of raw materials. China, along with the United States and India, is a major producer of cotton.

China's apparel market share has declined in recent years due to various reasons and a shift toward high-end, sophisticated products. Additionally, the investors from China made stakes in Myanmar, Vietnam, and Cambodia. Last year, its market share was 36.7%, or $161 billion, a decline of 8% year-over-year. In other words, China lost $14 billion in garment work orders to other countries in a single year. In 2016, Bangladesh's apparel market share was valued at $28 billion, increasing 7.69 percent from the previous year.

In 2016 the leading exporters of apparel were China ($161 billion), Bangladesh ($28 billion), Vietnam ($25 billion), India ($18 billion), Hong Kong ($16 billion), Turkey ($15 billion), and Indonesia ($7 billion).

Garment exports from Bangladesh reached record high in the 2021–2022 fiscal year; China ($220,302 billion), Bangladesh ($38.70 billion), India ($8.127 billion), Pakistan ($19.33 billion).

Finishing

The fabric, when it leaves a loom or knitting machine, is not readily usable. It may be rough, uneven, or have flaws like skewing. Hence, it is necessary to finish the fabric. Finishing techniques enhance the value of the treated fabrics. After manufacturing, textiles undergo a range of finishing procedures, including bleaching, dyeing, printing, as well as mechanical and chemical finishing.

Coloration

Textiles are often dyed, with fabrics available in almost every colour. The dyeing process often requires several dozen gallons of water for each pound of clothing. Coloured designs in textiles can be created by weaving together fibres of different colours (tartan or Uzbek Ikat), adding coloured stitches to finished fabric (embroidery), creating patterns by resist dyeing methods, tying off areas of cloth and dyeing the rest (tie-dyeing), drawing wax designs on cloth and dyeing in between them (batik), or using various printing processes on finished fabric. Woodblock printing, still used in India and elsewhere today, is the oldest of these dating back to at least 220 CE in China. Textiles are also sometimes bleached, making the textile pale or white.

Colour matching

In textiles, colour matching extends beyond selecting the appropriate dyestuffs or pigments and combining them in precise proportions to achieve the desired end product colour. Meeting criteria for fastness, cost, and quality is also essential. This process plays a critical role in materializing a designer's concept into an actual product.

Finishes

Textile finishing is the process of converting the loomstate or raw goods into a useful product, which can be done mechanically or chemically. Finishing is a broad term that refers to a variety of physical and chemical techniques and treatments that finish one stage of textile production while also preparing for the next. Textile finishing can include aspects like improving surface feel, aesthetical enhancement, and adding advanced chemical finishes. A finish is any process that transforms unfinished products into finished products. This includes mechanical finishing and chemical applications which alter the composition of treated textiles (fibre, yarn or fabric.)

Since the 1990s, with advances in technologies such as permanent press process, finishing agents have been used to strengthen fabrics and make them wrinkle free. More recently, nanomaterials research has led to additional advancements, with companies such as Nano-Tex and NanoHorizons developing permanent treatments based on metallic nanoparticles for making textiles more resistant to things such as water, stains, wrinkles, and pathogens such as bacteria and fungi.

Textiles receive a range of treatments before they reach the end-user. From formaldehyde finishes (to improve crease-resistance) to biocidic finishes and from flame retardants to dyeing of many types of fabric, the possibilities are almost endless. However, many of these finishes may also have detrimental effects on the end user. A number of disperse, acid and reactive dyes, for example, have been shown to be allergenic to sensitive individuals. Further to this, specific dyes within this group have also been shown to induce purpuric contact dermatitis.

Eisengarn, meaning "iron yarn" in English, is a light-reflecting, strong material invented in Germany in the 19th century. It is made by soaking cotton threads in a starch and paraffin wax solution. The threads are then stretched and polished by steel rollers and brushes. The result of the process is a lustrous, tear-resistant yarn which is extremely hardwearing.

Environmental and health impacts

After the oil industry, the fashion industry is the second biggest polluter of agricultural land, which has several harmful impacts on the environment. As the industry grows, the effect on the environment is worsening. Textile manufacturing is one of the oldest and most technologically complicated industries. This industry's fundamental strength stems from its solid manufacturing base of a diverse range of fibres/yarns ranging from natural fibres such as jute, silk, wool, and cotton, to synthetic or manufactured fibres that include polyester, viscose, nylon, and acrylic.

Textile mills and their wastewater have grown in proportion to the increase in demand for textile products, generating a severe pollution concern around the world. Numerous textile industry chemicals pose environmental and health risks. Among the compounds in textile effluent, dyes are considered significant contaminants. Water pollution generated by the discharge of untreated wastewater and the use of toxic chemicals, particularly during processing, account for the majority of the global environmental concerns linked with the textile industry.

Environmental impacts

Clothing is necessary to meet the fundamental needs of humans. Increased population and living standards have increased the need for clothing, enhancing the demand for textile manufacturing; wet processing needs more water consumption. Conventional machinery and treatment procedures use enormous quantities of water, especially for natural fibres, which require up to 150 kg of water per kg of material. The textile sector is accountable for a substantial number of environmental impacts. However, the discharge of untreated effluents into water bodies is responsible for the majority of environmental harm produced by the textile sector.

The textile sector is believed to use 79 trillion litres of water per year and to discharge around 20% of all industrial effluent into the environment. Reportedly, aromatic and heterocyclic compounds with colour-display and polar groups make up most of the dyes used in textile coloration processes. The structure is more complex and stable, making it more difficult to degrade printing and dyeing wastewater.

In addition, textiles constitute a significant percentage of landfill waste. In 2023, North Carolina State University researchers used enzymes to separate cotton from polyester in an early step towards reducing textile waste, allowing each material to be recycled.

Textiles containing various kinds of plastics like polyesther, polyamide, elastan, polyacrylonitrile, aramid, polypropylene, etc. are also a significant source of environmental pollution and impose health risks through the emission of microplastics.

Health impacts

Many kinds of respiratory diseases, skin problems, and allergies may be caused by dyes and pigments discharged into the water.

Although formaldehyde levels in clothing are unlikely to be at levels high enough to cause an allergic reaction, due to the presence of such a chemical, quality control and testing are of utmost importance. Flame retardants (mainly in the brominated form) are also of concern where the environment, and their potential toxicity, are concerned.

Chemicals use, advantage and health impacts

Certain chemical finishes contain potential hazards to health and the environment. Perfluorinated acids are considered to be hazardous to human health by the US Environmental Protection Agency.

Testing

Testing for these additives is possible at a number of commercial laboratories. It is also possible to have textiles tested according to the Oeko-tex certification standard, which contains limits levels for the use of certain chemicals in textiles products.

Laws and regulations

Different countries have certain laws and regulations to protect consumers' interests. The Textile Fiber Products Identification Act is a law that protects consumers in the United States. The act protects producer and consumer interests by implementing labelling (required content disclosure) and advertising requirements on textile products. The Textile Fiber Products Identification Act applies to all textile fibre products besides wool, which is governed by the Wool Product Label Number. The law prohibits misinformation about the fibre content, misbranding, and any unfair advertising practice, as well as requires businesses to operate in a particular manner.

Testing of textiles

Testing occurs at various stages of the textile manufacturing process, from raw material to finished product. The purpose of testing is to evaluate and analyse the regulatory compliance, the product's quality and performance, as well as to measure its specifications. Textile testing encompasses a wide range of methodologies, procedures, equipment, and sophisticated laboratories. Local governments and authorized organization's such as ASTM International, International Organization for Standardization, and American Association of Textile Chemists and Colorists establish standards for testing of textiles.

Some examples of tests at different stages:

For fibre: Fibre identification is a necessary test for determining fibre content and classifying products. The labelling of items with their fibre content percentage is a regulatory requirement. Using microscopy, solubility, and burn tests, fibres are distinguished from one another. More fibre relating tests include fibre length, diameter, Micronaire.

For yarn: Yarn count, denier, Strength, evenness.

For fabric: Dimensional stability, colour fastness, thread count, G.S.M, pilling, flammability.

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