Paper

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 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. not UK) is 66cm x 66cm (26 x 26 inches). 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. The 'Oxford Size' used in many English speaking countries is 50cm x 75cm (20 x 30 inches), while the 'Continental Size' used in many parts of Continental Europe (i.e. 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. The Industrial Revolution saw the mass production of decorated textiles and decorated pillows became a common feature in millions of homes.

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. The difficulty of sophisticated dyes and sewing techniques lead to the development of pillows as an art form, with highly decorated pillows becoming prized commodities first in China and later in Medieval Europe. The majority of modern book publishers now use acid-free paper. They were originally used mainly by the wealthy, and have been found in Ancient Egyptian tombs. Documents written on more expensive rag paper were more stable. Pillows have a long history, having been used by almost all settled peoples to enhance quality of life. Unfortunately, the original wood-based paper was more acidic and more prone to disintegrate over time, through processes known as slow fires. Sleeping without a pillow can cause discomfort and soreness for some people, but it seems completely healthy to sleep without a pillow.

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.
Some pillows may also provide additional aids to relaxation, such as a heating pad or aromatherapy. Cheap wood based paper also meant that keeping personal diaries or writing letters ceased to be reserved to a privileged few.
. 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 design of each pillow reflects the type of support that it is intended to provide. Before this era a book or a newspaper was a rare luxury object and illiteracy was the norm. A pillow is designed to provide both support and comfort to the area of the body resting upon it.

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. When a pillow is placed on a flat surface the poof point is the crest of the pillow roundness. Although older machines predated it, the Fourdrinier paper making machine became the basis for most modern papermaking. Each corner of a pillow is refered to as a nib. 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. A rough rule of thumb: if you fold your pillow in half and it doesn't spring back, it's time to get a new pillow. 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. Even with regular washing, pillows tend to accumulate large amounts of dust and vast numbers of microbes among the fill and it is recommended that they be replaced every few years, especially for those with allergies.

Some historians speculate that paper was the key element in global cultural advancement. Bed pillows do not have this feature, and instead a case is used that can be frequently and easily removed and washed. The oldest known paper document in the West is the Missel of Silos from the 11th century. Pillows on furniture normally include a zipper in this cover so that the fill can occasionally be removed and the covering laundered. They used hemp and linen rags as a source of fiber. The fill is then surrounded with a cover or shell made of some form of cloth or silk, commonly referred to as the pillow case. 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. Historically feathers and down were the choice of the rich; today artificial fills are the most common.

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. Traditionally straw was a common filler, but this is uncomfortable and rarely used today. Instruction in the manufacturing process was required, and the Chinese were reluctant to share their secrets. Starting at the center, pillows contain a filler made from any of a variety of materials including, foam, synthetic fills, feathers, or down. It spread slowly outside of China; other East Asian cultures, even after seeing paper, could not figure out how to make it themselves. The pillow has parts and can be dissected. Other sources trace the invention of this type of papermaking to China in 150 BC. .

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. Also used to describe verbal acknowledgement during an audio interview which leaves the soundtrack filled with "Yeah", "I know, yeah" etc. Indeed, most of the above materials were rare and costly. To Pillow:(Dublin colloquial) A verb which describes the act of performing poorly at a task, leaving a group before the completion of a task, not pulling ones weight during a project, poor attendance at meetings during a project, relying mostly on the effort of others to get by in life. Silk was sometimes used, but was normally too expensive to consider. By analogy, in engineering and construction, supporting elements may also be called pillows. In China, documents were ordinarily written on bamboo, making them very heavy and awkward to transport. There are also throw pillows which are pillows that are purely decorative and not designed for support or comfort.

Further north, parchment or vellum, made of processed sheepskin or calfskin, replaced papyrus, as the papyrus plant requires subtropical conditions to grow. A pillow is a type of bedding— a small (and usually soft) support for the head, usually used while sleeping in a bed, or for the body as used on a couch or chair. Papyrus was produced as early as 3000 BC in Egypt, and in ancient Greece and Rome. Using a pillow between the knees while sleeping on the side can prevent the upper leg from pulling downward and creating a twist in the spine. The word paper comes from the ancient Egyptian writing material called papyrus, which was woven from papyrus plants. Using a pillow under the knees while sleeping on the back can relieve low back pain by helping to reduce the curve of the lower back in this position. The heat produced by these can easily dry the paper to less than 6% moisture. These pillows are generally used while driving or sitting for extended periods of time, such as in an office chair.

These dryer cans heat to temperatures above 200ºF and are used in long sequences of more than 40 cans. Lumbar pillows are designed to support the inward curve of the lower back, filling the space created when in a sitting position. On the paper machine, the most common is the steam-heated can dryer. These pillows are used primarily by individuals who have suffered an injury to the tailbone area or who suffer pain from hemorrhoids or another ailment of the colon. In more modern times, various forms of heated drying mechanisms are used. Donut pillows are shaped like a donut, with a space in the middle to alleviate pressure on the tailbone area. In the earliest days of papermaking this was done by hanging the paper sheets like laundry. It is conventionally used to prop oneself upright while in bed, as for reading or watching television.

Drying involves using air and or heat to remove water from the paper sheet. A husband pillow (also known as a bedrest) is a large, high-backed pillow with two "arms". When making paper by hand, a blotter sheet is used. Their convenient "U" shape fits around the neck and keeps the head from slipping into an uncomfortable and possibly harmful position during sleep. On a paper machine this is called a felt (not to be confused with the traditional felt). Travel pillows provide support for the neck and head in a sitting position. Once the water is forced from the sheet, another absorbant material must be used to collect this water. These can also be known as cervical pillows.

Pressing the sheet removes the water by force. Neck pillows support the neck by providing a deep area for the head to rest and a supportive area to keep the neck in alignment. The methods of doing so vary between the different processes used to make paper, but the concepts remain the same. This type of pillow can be especially useful in providing support for those who sleep on their sides and for pregnant women. This is accomplished through pressing and drying. Body pillows are as long as a full adult body, providing support to the head and neck at the top and to the knees and legs lower down. 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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