How is paper made out of trees?

Question

I have to do homework on it!!!

Answer 1

This link explains the paper-making process in 5 steps. For example, it says there:

To begin the process, logs are passed through a debarker, where the bark is removed, and through chippers, where spinning blades cut the wood into 1" pieces.   Those wood chips are then pressure-cooked with a mixture of water and chemicals in a digester.

Continuing further it says:

The pulp is washed, refined, cleaned and sometimes bleached, then turned to slush in the beater.  Color dyes, coatings and other additives are mixed in, and the pulp slush is pumped onto a moving wire screen.

Then later on it says:

As the pulp travels down the screen, water is drained away and recycled.   The resulting crude paper sheet, or web, is squeezed between large rollers to remove most of the remaining water and ensure smoothness and uniform thickness.  The semidry web is then run through heated dryer rollers to remove the remaining water.

And so on.

Answer 2

The trees are 'pulped', meaning they are softened and mashed into fibers.  Water with the fibers is run through a screen which forms a 'matrix' of interlocking fibers.   The water is pressed out of this and it's dried, and then it's paper.

You can make paper yourself the same way.  It's a lot of trouble to pulp trees, but you can tear up paper (newspaper or even used xerox or computer printer paper) and grind it up in a blender with some water.  You put this 'slurry' in a big tank.  You make  a screen by stretching porous cloth (like windowscreen) on a wooden frame.  You slip this frame under the pulpy water and pull it up.  It gets a layer of the pulp spread evenly on it.  Then you dump it on a piece of felt. You can just dry it like this or you can stack up pieces of felt, press the excess water out, and let them dry.

There are artists who make very beautiful paper this way, for greeting cards or calligraphy projects, including leaves and seeds and things in it for texture.

Answer 3

cut and mash