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Paper Making Process |
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Storage
Recovered paper is unloaded and stored. Various paper grades are kept separate. The paper mill uses different types of fully recycled kraft paper. Recovered paper is moved from storage and placed on the conveyor by means of a forklift. |
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Pulping and Screening
The paper moves by conveyor to a big vat called a pulper, where water and chemicals are added. The paper, water and chemical mixture is pulped together. The pulp is then pumped through screens to remove contaminants, such as staples. Pulping and screening has now been completed. |
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Cleaning
Screen pulp is then cleaned, by means of centrifuge. A centrifuge is a series of cone shaped cylinders. The pulp is spun through, causing heavy particles to displace. |
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Refining
During refining, the pulp is beaten to make the recycled fibers swell, making them ideal for
Paper making. If the pulp contains any large bundles of fibers, refining separates them into individual fibers. |
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Papermaking
Now the clean pulp is ready to be made into paper. The recycled fiber
is used alone, The pulp is mixed with water and chemicals to make it 99.5% water.
This watery pulp mixture enters the headbox, a giant metal box at the beginning of the paper machine, and then is sprayed in a continuous wide jet onto a huge flat wire screen which is moving very quickly through the paper machine.
On the screen, water starts to drain from the pulp, and the recycled fibers quickly begin to bond together to form a watery sheet. The sheet moves rapidly through a series of felt-covered press rollers which squeeze out more water.
The sheet, which now resembles paper, passes through a series of heated metal rollers which dry the paper.
Finally, the finished paper is wound into a giant roll and removed from the paper machine. The roll of paper is cut into smaller rolls,or sometimes into sheets, before being shipped to a converting plant where it will be printed or made into products such as envelopes, paper bags, or boxes. |
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