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    Jimenez - (How Paper Is Made)

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    NATSOKO XP
    Wood chips and recycled paper are converted into pulp, which is then formed into a paper sheet on screens within a paper-making machine. The paper sheet is dried through heated rollers and wound into large rolls. Recycling paper fibers helps reduce waste and uses trees efficiently, though recycled paper eventually requires new fibers as recycled fibers degrade after multiple uses.

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    © All Rights Reserved
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    Jimenez - (How Paper Is Made)

    Uploaded by

    NATSOKO XP
    20 views5 pages
    Wood chips and recycled paper are converted into pulp, which is then formed into a paper sheet on screens within a paper-making machine. The paper sheet is dried through heated rollers and wound into large rolls. Recycling paper fibers helps reduce waste and uses trees efficiently, though recycled paper eventually requires new fibers as recycled fibers degrade after multiple uses.

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    Jimenez_(How Paper is Made)

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    Wood chips and recycled paper are converted into pulp, which is then formed into a paper sheet on screens within a paper-making machine. The paper sheet is dried through heated rollers and wound into large rolls. Recycling paper fibers helps reduce waste and uses trees efficiently, though recycled paper eventually requires new fibers as recycled fibers degrade after multiple uses.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    20 views5 pages

    Jimenez - (How Paper Is Made)

    Uploaded by

    NATSOKO XP
    Wood chips and recycled paper are converted into pulp, which is then formed into a paper sheet on screens within a paper-making machine. The paper sheet is dried through heated rollers and wound into large rolls. Recycling paper fibers helps reduce waste and uses trees efficiently, though recycled paper eventually requires new fibers as recycled fibers degrade after multiple uses.

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    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    You are on page 1of 5

    How Paper is Made

    Over the centuries, paper has been made from a wide variety of materials — wood
    pulp, rice, water plants, cotton, even old clothes! But no matter what you use to make
    paper — you need “fiber.” Today’s paper fiber comes mainly from three sources —
    byproducts from the sawmilling process, pulpwood logs and recycled paper products.
    In fact, much of the paper we use every day is a blend of new and recycled fiber.
    From Log to Pulp
    • Much of the paper produced in Idaho is
    made from “waste” — the tree parts
    from logging and sawmill operations
    that can’t be made into lumber. After
    harvesting, trees are cut into logs and
    are transported to the mill. At the mill, a
    debarker removes the bark from each
    log. The log is cut into boards of varying
    sizes. The wood that’s left over is then
    converted into wood chips, about the
    size of corn flakes.
    Pulp Digesters
    • The wood chips are then put into “pulp
    digesters” where they are broken down by
    steam and chemicals into a gloppy pudding of
    cellulose fibers and other wood components. In
    another process, the chemicals, wood resins,
    and wood lignin (sort of a natural glue in the
    wood) are removed. The cellulose fibers are
    cleaned and screened many times to get them
    ready to be made into paper. Some
    papermakers use a mechanical pulping process
    instead, where the wood chips are literally
    “beaten to a pulp.”
    From Pulp to Paper
    • The paper pulp (from wood chips, recycled paper, or
    both) is fed into the paper-making machine. A pump
    sprays a thin layer of the liquid paper pulp onto a
    moving wire screen. This screen can be up to 20 feet
    wide, and can travel at speeds of 60 miles per hour.
    • As the pulp is carried along by the screen, the water in
    it is removed, and the cellulose fibers become bonded
    together, forming paper. While the paper is still damp,
    it is fed through a series of heated rollers which press
    it and dry it. The paper is then spooled into huge rolls,
    cut into various sizes, and converted into paper
    products.
    From Paper to More
    Paper
    • Recycling paper helps make sure we get
    the most out of every tree we use. And it
    helps keep paper from clogging up our
    landfills. Each time paper is recycled, the
    cellulose fibers get shorter, until eventually
    the paper won’t hold together. That’s why
    most “recycled” papers contain some new
    paper fibers mixed in with the old.

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