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Lint is the common name for visible accumulations of textile fibers, hair and other materials, usually found on and around clothing. Certain materials used in the manufacture of clothing, such as cotton, linen, and wool, contain numerous, very short fibers bundled together. During the course of normal wear, these fibers may either detach or be jostled out of the weave of which they are part. This is the reason why heavily used articles such as shirts and towels become thin over time and why such particles accumulate in the lint screen of a clothes dryer. Because of their high surface area to weight ratio, static cling causes fibers that have detached from an article of clothing to continue to stick to one another and to that article or other surfaces with which they come in contact. Other small fibers or particles also accumulate with these clothing fibers, including human and animal hair and skin cells, plant fibers, and pollen, dust, and microorganisms. The etymology of the modern word "lint" is related to "linting", the term used for the cultivation of the shorter fibers from the cotton plant (Gossypium), also called "lint", from which lower-quality cotton products are manufactured. Lint is composed of threads of all colors, which blend hues and may appear to be a uniform grey. Varieties of lint Cotton lint Cotton lint refers to the fibrous coat that covers the cotton seeds. Cotton lint is ginned cotton. The term Linter: these are veritably short fibers which are not removed from seeds in the ginning process but are in special delinters machines at cotton ginning mill. The lint that is delivered to the spinning mill contains a variety of extraneous materials, including seed pieces, dust, and motes, which are collectively referred to as trash. Dryer lint Dryer lint is lint generated by the drying of clothes in a clothes dryer; it typically accumulates on a dryer screen. Underwriters Laboratories recommends cleaning the lint filter after every cycle for safety and energy efficiency. Failure to clean the lint filter is the leading cause of home clothes dryer fires. Navel lint Navel lint (also known by names such as navel fluff, belly button lint, belly button fluff, and dip lint) is an accumulation of fluffy fibers in the navel cavity often found at the beginning and end of the day. Cloth fibers are scraped by body hair via friction, which ratchets the fibers in the direction of hair growth. One hypothesis is that hair travels along a lint highway defined as integral curves of the vector field given by the direction of growth of the hair, which must end at a vanishing point according to the hairy ball theorem. Another is that rubbing of navel hairs and clothing contributes to a build-up of static electricity, resulting in the collection of clothing fibers and to a lesser extent, dead skin cells. Pocket lint Pocket lint (also known as gnurr) is debris including bits of fabric as well as small shreds of paper and tissue that are often found in pockets. It may sometimes be caused by running the clothing through a washing machine one or more times, causing the pocket lining or contents to compact and shred. As pocket lint is an amalgamation of the contents of the pockets, pocket lint can be helpful when determining whether drugs have been previously stored in the pockets, by testing it with various drug tests. In a survival situation, pocket lint can be used as tinder for starting a fire. The Infocom game, The Hitchhiker's Guide to the Galaxy, was sold with a collection of "props" that included a small bag of "pocket fluff". Problems related to lint Biological problems Inhalation of excessive amounts of lint, as observed in early textile workers, may lead to diseases of the lungs, such as byssinosis. Lint shed from clothing during the course of wear may also carry bacteria and viruses. For this reason, the presence of lint presents a danger during surgery, when it might carry microorganisms into open wounds. It has been demonstrated that due to the abrasive contact between clothing and skin, "a person wearing a standard cotton scrub suit actually sheds more bacteria than without clothing". Lint is also a component of "toe jam", described as "that gunk located between your toes", which can result due to not properly cleaning feet and toes. Like ear wax, mucus, and many other bodily residues (...). But the issue can have several different causes—some of them more serious than others — so it pays to give your feet special attention." Lint also presents a threat to the environment in spaces that generally do not experience human contact, constituting "one of the primary polluters" in cave exploration. Mechanical problems Lint contamination also presents what may be the most serious threat of damage to delicate mechanical devices. In order to prevent lint contamination, workers entering clean rooms are generally required to wear an outer layer of clothing made from artificial fibers that are longer and thicker, and therefore much less likely to shed any material. Lint-resistant clothing materials include, elastic fabrics like spandex (or Lycra), for which the fibers will tend to stretch rather than break, and longer, stronger non-woven polyolefin fibers. Other problems Lint on clothing is generally considered unattractive and unprofessional. Furthermore, lint may be abrasive and may damage the clothing itself. For these reasons, visible lint is often removed with a lint remover or clothes brush. The accumulation of lint during clothes cleaning can be reduced with the use of a fabric softener, which reduces the amount of static electricity on clothing surfaces and therefore prevents the lint from sticking to the clothes. Dryer lint, which collects on the lint screen of a clothes dryer, is highly flammable and therefore presents a fire hazard. However, because of this flammability, dryer lint may be collected for use as tinder, although burning human-made fibres can produce toxic fumes. Uses of lint Composting It is possible to compost lint retrieved from the lint screen on a dryer by adding it to other materials being composted. The texture of the material allows the organic matter within it to compost quickly and easily, but depending on the source, it may include inorganic fibers and materials which never break down. Forensic science Lint is useful to examine in forensic science because it is accumulated over time, and because the fibers shed from clothing adhere to not only that clothing, but also other particles to which the carrier is exposed. The lint on a person's clothing is therefore likely to contain material transferred from the various environments through which that person has passed, enabling forensic examiners to collect and examine lint to determine the movements and activities of the wearer. Examiners may use various chemicals to isolate lint fibers from different articles of clothing based on differences in color and other characteristics. Tinder D.... Discover the Eric Kleinert popular books. Find the top 100 most popular Eric Kleinert books.