Papel

Páginas: 3 (678 palabras) Publicado: 6 de abril de 2011
PaperFrom Wikipedia, the free encyclopediaJump to: navigation, search
For other uses, see Paper (disambiguation).

A stack of manila paper Wikimedia Commons has media related to: Paper

Paperis a thin material mainly used for writing upon, printing upon or for packaging. It is produced by pressing together moist fibers, typically cellulose pulp derived from wood, rags or grasses, anddrying them into flexible sheets.

Paper is a versatile material with many uses. Whilst the most common is for writing and printing upon, it is also widely used as a packaging material, in manycleaning products, in a number of industrial and construction processes, and occasionally as a food ingredient, particularly in Asian cultures.

Paper, and the pulp papermaking process, was developed inChina during the early 2nd century AD by the Han court eunuch Cai Lun, although the earliest archeological fragments of paper derive from the 2nd century BC.[1]

Contents [hide]
1 History
2Papermaking
2.1 Chemical pulping
2.2 Mechanical pulping
2.3 Deinked pulp
2.4 Additives
2.5 Producing paper
2.6 Finishing
3 Applications
4 Types, thickness and weight
5 Paper stability
6 The futureof paper
7 See also
8 References and notes
9 External links


HistoryMain article: History of paper
Further information: Science and technology of the Han Dynasty and List of Chineseinventions

Hemp wrapping paper, China, circa 100 BCE.Papermaking is considered to be one of the Four Great Inventions of Ancient China, since the pulp papermaking process was developed in China during theearly 2nd century AD by the Han court eunuch Cai Lun though the earliest archeological fragments of paper derive from the 2nd century BC.[2] China used paper as an effective and cheap alternative tosilk, letting them sell more silk, leading to a Golden Age.

The use of paper spread from China through the Islamic world and entered production in medieval Europe in the 13th century, where the...
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