Wednesday 24 July 2013

Paper (also known as Papyrus)

The Invention Of Paper

Paper was invented by the ancient Chinese in the 2nd century BC during the Han Dynasty and spread slowly to the west via the Silk Road. Papermaking and manufacturing in Europe started in the Iberian Peninsula, today's Portugal and Spain and Sicily in the 10th century by the Muslims living there at the time, and slowly spread to Italy and South France reaching Germany by 1400. Earlier, other paper-like materials were in use like papyrus, parchment and vellum.

In medieval Europe, the hitherto handcraft of papermaking was mechanized by the use of waterpower, the first water paper mill in the Iberian Peninsula having been built in the Portuguese city of Leiria in 1411, and other processes. The rapid expansion of European paper production was truly enhanced by the invention of the printing press and the beginning of the Printing Revolution in the 15th century.
The word "paper" is etymologically derived from papyrus, Ancient Greek for the Cyperus papyrus plant. Papyrus is a thick, paper-like material produced from the pith of the Cyperus papyrus plant which was used in ancient Egypt and other Mediterranean cultures for writing long before the making of paper in China. 

Papyrus however is a "lamination of natural plants, while paper is manufactured from fibers whose properties have been changed by maceration or disintegration.
AD 105 is often cited as the year in which papermaking was invented. In that year, historical records show that the invention of paper was reported to the Chinese Emperor by Ts'ai Lun, an official of the Imperial Court.

Recent archaeological investigations, however, place the actual invention of papermaking some 200 years earlier. Ancient paper pieces from the Xuanquanzhi ruins of Dunhuang in China's northwest Gansu province apparently were made during the period of Emperor Wu who reigned between 140 BC and 86 BC.
Whether or not Ts'ai Lun was the actual inventor of paper, he deserves the place of honor he has been given in Chinese history for his role in developing a material that revolutionized his country.

Early Chinese paper appears to have been made by from a suspension of hemp waste in water, washed, soaked, and beaten to a pulp with a wooden mallet. A paper mold, probably a sieve of coarsely woven cloth stretched in a four-sided bamboo frame, was used to dip up the fiber slurry from the vat and hold it for drying. Eventually, tree bark, bamboo, and other plant fibers were used in addition to hemp.
The first real advance in papermaking came with the development of a smooth material for the mold covering, which made it possible for the papermaker to free the newly formed sheet and reuse the mold immediately. This covering was made from thin strips of rounded bamboo stitched or laced together with silk, flax, or animal hairs. Other Chinese improvements in papermaking include the use of starch as a sizing material and the use of a yellow dye which doubled as an insect repellent for manuscript paper.


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