Dunk (footwear)

After the crowds dispersed, knives, baseball bats, even machettes were found laying in the streets. Some manufacturers, notably AMD, have started using a new, slightly more environmentally friendly alternative to expanded plastic packaging made out of paper, known commercially as "paperfoam." The packaging has very similar mechanical properties to some expanded plastic packaging, but is biodegradable and can also be recycled with ordinary paper. The police department called taxi cab services to escort those lucky few who actually were able to recieve the sneaker. The type of cotton fibres used for making paper are discarded as unusable waste from the textile industry, and can be manufactured using fewer chemicals and less energy. At one specific store in New York during the release of the infamous "Pigeon" dunk a riot formed. Their reasons for doing this are that the cotton based tissue papers are less abrasive, less likely to cause allergic reactions, and far more environmentally friendly than wood papers, as they are made from renewable materials. (Some of the more rare, hyped shoes are going for over a thousand dollars a pair.) During many releases of limited release dunks long lines have been known to form. However, at least one company (Cloudy Bay Cotton) has recently tried to introduce cotton based tissue papers to westernised countries as an alternative to wood based ones.

This is due to the fact that Nike has lowered the quality of materials and manufacturing for the Nike SB Dunk since the first generation shoes were released, yet the prices of these shoes sold by stores raises higher and higher. Paper made in the west since the industrial revolution has been almost exclusively wood based, except for a few specialized papers like those used in banknotes. Hype is considered dangerous by many sneaker enthusiasts. The majority of modern book publishers now use acid-free paper. This happens when a shoe is "hyped" up, or is overly talked about and is bought at much higher prices by the masses. Documents written on more expensive rag paper were more stable. However, since they are popular among collectors, stores tend to raise the prices on the shoes based on how popular they are in the sneakerhead culture. Unfortunately, the original wood-based paper was more acidic and more prone to disintegrate over time, through processes known as slow fires.

The SB Dunk is sold to stores for a fairly low price, below $100. The office worker or the white-collar worker was slowly born of this transformation, which can be considered as a part of the industrial revolution. However, fakes, often Chinese-made, are plaguing the online auction site and tricking less educated sneaker enthusiasts into buying them for high prices. Cheap wood based paper also meant that keeping personal diaries or writing letters ceased to be reserved to a privileged few. This shoe quickly became popular all over the world, specifically in Japan, the United States, Europe and Korea. With the gradual introduction of cheap paper, schoolbooks, fiction, non-fiction, and newspapers became slowly available to nearly all the members of an industrial society. The Nike Dunk's attractive design and technological implementation caused the shoe to quickly make its way into the sneakerhead subculture. Before this era a book or a newspaper was a rare luxury object and illiteracy was the norm.

Nike currently collaborates with many designers to create special edition and collectable dunks. Together with the invention of the practical fountain pen and the mass produced pencil of the same period, and in conjunction with the advent of the steam driven rotary printing press, wood based paper caused a major transformation of the 19th century economy and society in industrialized countries. Since then, the SB Dunk has become a popular subcultural icon for so-called sneakerheads. Although older machines predated it, the Fourdrinier paper making machine became the basis for most modern papermaking. The SB Dunk features a puffy tongue and an improved Air insole. Paper remained a luxury item through the centuries, until the advent of steam-driven paper making machines in the 19th century, which could make paper with fibres from wood pulp. This new shoe is known as the SB Dunk. According to this theory, Chinese culture was less developed than the West in ancient times because bamboo, while abundant, was a clumsier writing material than papyrus; Chinese culture advanced during the Han Dynasty and preceding centuries due to the invention of paper; and Europe advanced during the Renaissance due to the introduction of paper and the printing press.

After some time, Nike had created a Dunk specifically for skaters. Some historians speculate that paper was the key element in global cultural advancement. The Nike Dunk soon became a popular shoe for riders due to the improved stability and lower profile sole which improved grounding performance. The oldest known paper document in the West is the Missel of Silos from the 11th century. Nike's basketball shoe line was fairly popular in skate culture. They used hemp and linen rags as a source of fiber. Michael Jordan wore the Dunks before he went and created his own shoe dynasty (the Air Jordan). After further commercial trading and the defeat of the Chinese in the Battle of Talas, the invention spread to the Middle East, where it was adopted in India and subsequently in Italy in about the 13th century.

The following universities were elected by Nike to be part of the College Colours programme:. The technology was first transferred to Korea in 600 and then imported to Japan by a Buddhist priest, Dam Jing (曇徴) from Goguryeo, around 610, where fibres (called bast) from the mulberry tree were used. In simple terms, the deal meant that each colored pair of Dunks matched their jerseys. Instruction in the manufacturing process was required, and the Chinese were reluctant to share their secrets. They signed some of the average college basketball teams (and their coaches) to an exclusive Dunk sponsorship deal. It spread slowly outside of China; other East Asian cultures, even after seeing paper, could not figure out how to make it themselves. The Dunk was used to spearhead what Nike called the ’College Colors’ program. Other sources trace the invention of this type of papermaking to China in 150 BC.

In addition to this, the paneling was made to improve basketball game performance during pivoting and blocking. The Chinese court official Cai Lun described the modern method of papermaking in AD 105; he was the first person to describe how to make paper from cotton rags. This was implemented for a lighter weight and a closer to the ground shoe. Indeed, most of the above materials were rare and costly. The Nike Dunk has a lower profile outer sole that glows in the dark as does the snuggles bear. Silk was sometimes used, but was normally too expensive to consider. . In China, documents were ordinarily written on bamboo, making them very heavy and awkward to transport.

. Further north, parchment or vellum, made of processed sheepskin or calfskin, replaced papyrus, as the papyrus plant requires subtropical conditions to grow. Since then the Dunk has been transformed into a subcultural icon and even as an inspiration for fashion and art. Papyrus was produced as early as 3000 BC in Egypt, and in ancient Greece and Rome. The Dunk was the Terminator’s fraternal twin, with every color for every school and in any size - Dunk Hi or Dunk Low. The word paper comes from the ancient Egyptian writing material called papyrus, which was woven from papyrus plants. The Dunk was first introduced in 1985 by Nike Inc. The heat produced by these can easily dry the paper to less than 6% moisture.

University of Nevada, Las Vegas. These dryer cans heat to temperatures above 200ºF and are used in long sequences of more than 40 cans. University of Michigan. On the paper machine, the most common is the steam-heated can dryer. University of Maryland, College Park. In more modern times, various forms of heated drying mechanisms are used. University of Kentucky. In the earliest days of papermaking this was done by hanging the paper sheets like laundry.

University of Iowa. Drying involves using air and or heat to remove water from the paper sheet. Syracuse University. When making paper by hand, a blotter sheet is used. Georgetown University. On a paper machine this is called a felt (not to be confused with the traditional felt). Once the water is forced from the sheet, another absorbant material must be used to collect this water.

Pressing the sheet removes the water by force. The methods of doing so vary between the different processes used to make paper, but the concepts remain the same. This is accomplished through pressing and drying. After the paper web is produced, the water must be removed from it in order to create a usable product.

Standard sheet sizes are prescribed by governing bodies such as the International Organization for Standardization (ISO). When dried, this continuous web may be cut into rectangular sheets by slicing the web vertically and horizontally to the desired size. Most mass-produced paper is made using the continuous Fourdrinier process to form a reel or web of fibers in a thin sheet. The paper may then be removed from the mould, wet or dry, and go on to further processing.

Pressure may be applied to help remove additional water. In the mould process, a quantity of pulp is placed into a form, with a wire-mesh base, so that the fibers form a sheet on the mesh and excess water can drain away. This moving web is pressed and dried into a continuous sheet of paper. A watermark may be impressed into the paper at this stage of the process.

This dilute slurry is drained through a fine-mesh moving screen to form a fibrous web. The pulp mixture is further diluted with water resulting in a very thin slurry. For example, Kaolin (or calcium carbonate) is added to produce the glossy papers typically used for magazines. Once the fibers have been extracted, they may also be bleached, dyed, or have additional ingredients added to alter the appearance of the final product.

These fibres have already been treated once, so instead they need a more gentle process to break the fibers apart while preserving their integrity. Recycled fibres do not need to be pulped in the conventional sense. Removing the lignin from wood chips also serves to break them apart into the fibers that compose pulp. Pulp that is broken down chemically is known as "chemical pulp." The main purpose of a chemical pulping process is to break down the chemical structure of lignin and render it soluble in a liquid (most often water) so it may be washed from the remaining fibers.

However, because the lignin will cause this paper to yellow, mechanical pulp is most often used for newspapers and other non-permanent goods. Since the lignin is not removed from mechanical pulp, yields are relatively high, approximately 90-98%. Pulp that has been broken down mechanically is often known as "groundwood pulp." The mechanical process to break down wood chips into pulp requires no chemicals. If the lignin is retained in the pulp, the paper will yellow when exposed to air and light.

These processes are not needed when breaking down recycled fibers, as the lignin has already been removed from the source material. This is done via a chemical process. When natural materials are used to make paper, it is usually necessary to break down the lignin inside of the plant's cell walls. The source of fiber is often natural (softwood or hardwood trees or other plants) or recycled, such as old corrugated boxes, newsprint, or mixed paper.

The material to be used for making paper is first converted into pulp, a concentrated mixture of fibers suspended in liquid. Whether done by hand or with a paper machine, the paper making process has three simple steps:. . Though generally considered a flexible material, the edges of paper sheets can act as very thin, fine-toothed saws, leading to paper cuts.

A stack of 500 sheets of paper is called a ream. However, other vegetable fiber materials including cotton, hemp, linen, and rice may be used. The most common source of these fibers is wood pulp from pulpwood trees, (largely softwoods) such as spruce. The fibers used are usually natural and composed of cellulose.

Paper was invented in Ancient China by a man named Ts'ai Lun in AD 105.Paper is a thin, flat material produced by the compression of fibers (or fibres). paper machines- paper-engineering. origami. papier-mâché.

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