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Environmental
Paper Definitions
About Bleaching
The Paper Industry
Standards and
Environmental Logos  |
Environmental
Paper Definitions |
t is important to remember that not
all recycled papers are the same. The best way to
be sure that you are purchasing real recycled paper
is to ask your supplier for specific information
about fibre content and bleaching methods. The following
definitions may help answer some of the questions
you or your customer's may have.
Pre-consumer fibre
... is a broad category of paper
fibre that basically includes all sources of reused
fibre including mill broke and forest waste, like
wood chips and sawdust.
Post-commercial fibre
... is any waste recovered after
commercial processing but before reaching the end
user. (ie. envelope clippings, printing waste)
Post-consumer fibre
... is paper that has gone through
its intended use (been purchased by a consumer)
and then recovered through a recycling program.
Hydrogen Peroxide
... is a non-chlorine bleaching alternative
used to whiten paper. It has no toxic by-products,
but requires longer processing to achieve the same
brightness levels as chlorine.
Process Chlorine Free (PFC)
... means no chlorine or chlorinated
compounds are used in the manufacture of a recycled
sheet.
Sodium Hypochlorite
... is the most benign of the chlorine
compounds. Because it is an inert salt it does not
break down into organochlorines during the paper
making process.
Chlorine Dioxide
... is a bleaching method that can
reduce organochlorines by up to 40% as compared
with straight chlorine. However, it does still produce
toxic compounds. Beware of products that claim to
be elemental chlorine free because they are probably
bleached with this method.
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