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رد مع اقتباسPapermaking
Papermaking has been around for a long time. The ancient Egyptians discovered the use of papyrus as a writing material around the year 5000 BC, from the papyrus plant, which grew in large numbers along the banks in delta of the River Nile
The Chinese in the 2nd century BC had a papermaking process involving a fibrous matter. In the 8th century, Arabs had learned the art of paper making, which explains the rise of their intellect and learning
Did you know that paper is made from trees? Have you ever seen splinters in wood? Look at some wood and then some brown paper towel that your school has. Can you see little splinters or small pieces of material in the paper
First, trees are cut down in the forest and are then sent to a paper mill
At a paper mill, a machine removes bark from wood
Bark is not used to make paper, but it is used for other things
Once the bark is removed from the wood, it is chopped into very small pieces with a chipper
Did you know that they cook wood so that it can be made into paper? The wood chips are cooked in sodium hydroxide and sodium sulfide
The wood chips are cooked until they turn into a soft, slippery pulp or slurry. Now the soft, slippery paper pulp or slurry is poured into a container
The container pours the slurry onto a large screen. This is where the water is drained from the paper. Next, the paper is pressed flat between two rollers
The finished paper is wound into jumbo reels, then split into smaller customer reels. The individual reels are finished with a protective wrapper for transport and storage. Congratulations, you have just learned the basic process of papermaking
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