How Paper Is Made
Most paper starts as wood from trees. Many of the trees are grown on tree farms. Trucks carry the logs to a paper mill, where machines strip off the bark and chop the wood into small chips.
Next, the chips are cooked in water with chemicals until they break down into soft fibers. The mixture is called pulp. It looks like thick, lumpy oatmeal. The pulp is washed, and if the paper will be white, it is also cleaned to make it brighter.
Then the pulp is sprayed onto a moving screen. Most of the water drains away through tiny holes, and the fibers tangle together into a thin, wet sheet. Heavy rollers squeeze the sheet to press out more water, and hot rollers dry it. At the end, the paper is wound onto giant rolls and cut into sheets.
Paper can be recycled. Old paper is mixed with water and broken into pulp again, so it can be made into new sheets. Recycling helps save trees and energy.