Lecture notes
Chemistry class notes
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This document is class 12 notes of chemistry
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Paper and pulp,Introduction
The paper industry is one of the popular chemical industri
and has great contribution to the world’s economy. The
word paper is derived from a Latin word, ‘papyrus’ which
means a thick paper like material produced from papyrus
plants used for writing before the introduction of paper.
,Introduction
Papermaking has over 2,000 years of long manufacturing
history and is thought to have originated from China using
rags, hems and grasses as the raw materials. In today’s
world, paper is an essential material for human beings.
Nearly 50% of the paper produced globally is used for
packaging. The second largest uses of paper in the world a
for printing and writing. It is estimated that there are more
than 5,000 pulp and paper industries worldwide. The
world’s largest paper producing country is China followed
the United States and Japan.
, Introduction
In the context of Nepal, paper was being used from old ag
Traditional hand made paper called ‘Nepali Kagaj’ is
obtained from lokta plants. Lokta paper being durable and
resistant to tearing is still being used for official purposes.
the industrial level, Bhirkuti Kagaj Karkhana, was establish
in 1985. However, it was closed permanently in 2011. Thes
days, paper productions are conducted only in small scale
different localities including Baglung, Taplejung, Panchthar
Ilam, Jhapa, Sunsari, Gorkha etc.
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