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History Of Papermaking - College Essay

History Of Papermaking

Papermaking goes as far back as 105 A.D. when Ts'ai Lun, an official
at the Imperial Court of China, made a sheet of paper using mulberry and
other fibres along with fish nets, rags and hemp waste. The first paper
was made in 793 A.D. in Baghdad during Harun-ar-Raschid's rule, with the
golden age of Islamic culture that brought papermaking to Europe.

By the 14th century paper mills existed all over Europe, particularly
in Spain, Italy, France and Germany. During the 1450's paper printing(by
machines) was introduced and the demand for paper increased all over the
world. Papermaking remained unchanged till the 18th century, with linen
and cotton rags used for raw materials. This ...

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two main
kinds of pulping processes used in the 18th century and they were,
mechanical or groundwood pulping and chemical pulping. Mechanical pulping
contains certain wood components and therefore, it is not suitable for
paper in which high whiteness and permanence are required. Mechanical pulp
was first made in Germany in the 1840's, but was not used much until 1870.
Chemical wood pulp is used when high whiteness, strength and permanence are
required. VAT SIZING: A sheet of paper composed of cellulosic fibres is
water absorbent. Thus, aqueous liquids will penetrate it and spread in it.
Impregnation of the paper with various substances that require this wetting
and penetration is called vat sizing. During the 18th century paper sheets
were impregnated with animal glue which was an expensive and tedious
process. In 1807 Moritz Friedrich Illig of Germany discovered paper that
could be sized in vats with rosin and alum, but his methods were not
commonly used till 1840.

...

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History Of Papermaking. (2008, June 22). Retrieved January 31, 2025, from http://www.essayworld.com/essays/History-Of-Papermaking/85662

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PAPER DETAILS

Added: 6/22/2008 09:54:25 PM
Category: Miscellaneous
Type: Free Paper
Words: 534
Pages: 2

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