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General
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Soybean
oil, also known as vegetable oil, is mainly used for human consumption.
Soybean oil can also be used as a carrier for printing inks.
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Soy ink is
a kind of ink made from soybeans. As opposed to traditional petroleum-based
ink, soy-based ink: is more environmentally friendly, is available in
brighter colors, improves the life span of the printers, makes it easier to
recycle paper, is more economic in the long run.
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The
soybean oil is blended with pigments, resins and waxes to make ink.
Process
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Soy ink is
a helpful component in paper recycling because the soy ink can be removed
more easily than regular ink from paper during the de-inking process and
this allows the recycled paper to have less damage to its paper fibers and
have a brighter appearance. The waste that is left from the soy ink during
the de-inking process is not hazardous and it can be treated easily through
the development on modern processes.
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The
process for soybeans typically consists of five steps: oilseed
handling/elevator operations, preparation of soybeans for solvent
extraction, solvent extraction and oil desolventizing, flake desolventizing,
and oil refining.
Applications
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Soy ink
may be the solution to the environmental health and safety concerns of the
printing industry.
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Soy ink is
naturally low in VOCs (volatile organic compounds, chemical compounds that
evaporate and react to sunlight) and its usage can reduce emissions causing
air pollution.
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Soy ink is
available for newspapers, magazines, commercial printing, packaging,
business forms and many other uses.
Market
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Today,
one-third of America’s nearly 10.000 newspaper printers use it. More than
90% of the nation’s daily newspapers are printed with color soy ink. Most
newspapers use soy ink for color printing because its price is comparable
with that of conventional color ink and it has many advantages: its superior
performance, its environmental friendliness and its vibrant colors.
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Currently,
production of the ANPA soy-based ink uses 5 to 10 million bushels of
soybeans yearly.
- Soy ink's US. market
share has quadrupled from less than 5 percent to 22.5 percent today. US.
soybean oil use in printing inks has increased from virtually nothing to
103 million pounds (46.4 million kilograms) annually.
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