Corrugated fiberboard is a paper-based material consisting of a fluted corrugated sheet and one or two flat linerboards.
How is corrugated cardboard made?
Manufacturing a corrugated cardboard box begins with the pulping of wood chips in the kraft (sulfate) process. First, tree trunks are stripped of bark and torn into small chips. Next, these chips are placed in a large, high-pressure tank called a batch digester, where they are cooked in a solution, or liquor, made of sodium hydroxide (NaOH) and several other ionic compounds such as sulfates, sulfides, and sulfites. These strongly alkaline chemicals dissolve the lignin, the glue-like substance that holds the individual wood fibers together in a tree trunk.When the pressure is released after several hours, the wood chips explode like popcorn into fluffy masses of fiber.
What is the primary raw material used to make cardboard?
Fast-growing pine trees provide the primary raw material used to make corrugated cardboard. The largest packaging companies own thousands of acres of land where trees are matured, harvested, and replaced with seedlings. After the trees are harvested, they are stripped of their limbs; only the trunks will be shipped by truck to a pulp mill. The trees are converted to kraft paper. At the mill, the harvested tree trunks are subjected to the kraft process, also known as the sulfate process because of the chemicals used to break down wood chips into fibrous pulp. After pulping and other processing, the fibers are sent directly to the paper machine where they are formed, pressed, dried, and rolled into the wide, heavy rolls of kraft paper sent to corrugating plants to be made into cardboard
How many cubic yards of landfill space can be saved by recycling 1 ton of cardboard?
Recycling 1 ton of cardboard saves 9 cubic yards of landfill space and 46 gallons of oil.
How many trees can be saved each year if each household used 1 roll of recycled paper towels?
one million trees would be saved if every U.S.
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