2012年1月12日星期四

Canada goose down coat of all metal they go onto the next

Since then, paper production and the uses for it have astronomically increased. Below you will find a description of how the wood pulp is extracted and made into paper.Although most paper is made from the pulp some is made from recycled paper, special cloth and sometimes from grass. However; most paper is made from wood. There are farms that are specifically set up to plant trees for the sole purpose of producing paper products and they grow two different types for these products, softwood and hardwood. The reason they grow these two types is because a lone neither one of these woods will make a very good paper so they need to combine the two for good quality. The most common trees grown for paper are spruce and pine. These trees are well maintained and once they reach the right age they are cut down and brought in to begin the process of paper production.


The first thing that is done to the tree is remove the bark and then wash it. Once it has been washed, it is then chopped into small blocks. The next thing that is done is to test the wood for any type of particles that might be metallic. They do this by using a strong magnet to run over the blocks of wood and then they make sure all metal is removed from it.Once it is free of all metal they go onto the next step and that is removing the pulp from the trees. There are a few different ways of doing this. One is by using a grinder, they also will use what they call a digester. Sometimes chemicals will be used to extract it from the blocks along with steam and water. The important parts needed for the paper are wood fibers and cellulose.When the cellulose and fibers are ready they move onto the next step which is the most important step and that is the bleaching process.

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