know about how the paper on which we write is processed and how the industry carries out the process

1. INFORMATION
ABOUT
PAPER
AND
PULP
INDUSTRY

2. PAPER
MAKING
PROCESS

3. The wooden logs from trees are cut down.

4. Then the logs are debarked ( i.e.
removing the bark of the tree ) using
log debarker.

5. The debarked logs are then sent through a
series of chippers equipped with whirling
blades which break them down into
smaller and smaller pieces.

6. The tiny fragments are then pressure
cooked with chemicals in a large vat
called a digester to separate the fibers.

7. The wood pulp is cleaned, refined,
bleached.

8. SOME EXAMPLES
OF
CHEMICALS USED
IN
PAPER PULP

9. CAUSTIC SODA
Its often used in paper pulp for
maintaining pH of the paper.

10. SILICATE OF MAGNESIA
This chemical gives paper a greasy feel
and enable it to take high finish.

11. HYDROGEN PEROXIDE
Used in pulp bleaching.

12. TITANIUM DIOXIDE
This is the chemical used to increase
the brightness of paper.

13. The wood pulp is run through a series
of beaters until it is a fine slush.

14. When the preparation of paper is complete , the paper slush is pumped onto a
fast moving wire screen where it will start to become a continuous sheet of
paper