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Beginning of Paper
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History of Papermaking
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 dur ....
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Middle of Paper
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.... 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 ....
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SUBJECTS
