|
Paper Terminology
What is recycled paper?
Recycled paper can have several meanings, but the most consistent definition is
derived from our federal government's guidelines. Almost all state and local
government and business procurement specifications now reference the Environmental
Protection Agency's guidelines on recycled paper. The EPA guidelines require a
minimum of 30% post-consumer content for uncoated printing and writing paper,
and a minimum of 10% post-consumer content for coated papers. Other forms of
paper, such as newsprint, corrugated packaging, tissue, and others, also
require post-consumer content. The EPA doesn't consider mill broke, the
unprinted trimming and converting scrap from paper mills themselves, recycled
content.
What is pre-consumer waste?
Pre-consumer materials are those that have not met their intended end-use by a
consumer and include allowable waste left over from manufacturing, converting,
and printing processes. Examples: mill-converting scraps, pre-consumer
deinking material, pulp substitutes. Magazines and newspapers that were never
bought also are termed pre-consumer.
What is deinked pre-consumer waste?
This paper has been printed but not used by consumers, such as waste from
printers and unsold magazines and publications. It is processed like post-
consumer waste and is deinked for reuse.
What is post-consumer waste?
This is paper that has already been used and returned through a recycling program,
thereby diverting it from a landfill or incinerator. It is usually
deinked and then processed to make new paper. Office paper waste makes up
the majority of post-consumer waste content that is used to make recycled copy
and printing papers.
How is recycled paper made?
Recycled paper, either pre or post-consumer materials needs to be washed and is
often deinked prior to being pulped. The pulp goes through a bleaching process
to make it whiter. There are many bleaching processes; New Leaf Paper chooses
a processed chlorine free process. Once the pulp is bleached, it enters a
series of phases including the following: the paper forming section; the press
section where water is removed by pressing the wet paper between rolls and felts;
and the drying section where the moisture content is reduced to the desired level;
and the calendering section where the paper is compacted and smoothed
progressively as it travels down a stack of steel rolls. Once completed the
paper is stored in either rolls or cut into sheets.
What is deinking?
The deinking process removes applied inks, finishes, glues, and other
contaminants from wastepaper in order to extract the cellulose fiber. Typically
this requires extensive processing through a variety of pulping, screening,
cleaning, washing, and/or floatation equipment.
What does processed chlorine free mean?
Processed chlorine free refers to recycled paper in which the recycled content
is unbleached or bleached without chlorine or chlorine derivatives. Dioxins
and other toxins and pollutants created by chlorine and its derivatives are
often referred to as chlorinated organic compounds. The dioxins have been
associated with adverse affects on the immune and reproductive systems of
human as well as those of fish and wildlife species. New Leaf 's papers are
processed chlorine free.
What is elemental chlorine free?
Elemental chlorine fee applies to paper processed without elemental chlorine
but with a chlorine derivative such as chlorine dioxide. Although less harmful
than using chlorine, it is still considerably worse than totally chlorine free.
What is totally chlorine free?
Totally chlorine free applies to virgin fiber papers that are unbleached or
processed with a sequence that includes no chlorine or chlorine derivatives.
What is virgin fiber?
Virgin fiber is fiber that has never been used before in the manufacture of
paper or other products.
What is agricultural byproduct?
Agricultural byproducts are fibrous byproducts of agriculture, such as cereal
straws and corn stalks, which have previously been treated as a waste stream.
These materials are routinely burned or flooded from fields, wasting hundreds
of thousands of pounds of a valuable resource and damaging the environment.
Using agricultural byproducts means turning a waste stream into a resource and
New Leaf is actively researching the ability to use them.
What is non-wood or tree-free fiber?
Non-wood or tree-free fiber refers to fiber that comes from sources other than
trees, such as agricultural byproducts, kenaf, and hemp. These fiber sources
are commonly used in other parts of the world, and can be cultivated here to
help reduce pressure on forest lands.
What is sustainably harvested virgin fiber?
No matter how well we recycle, the paper industry will always require some
virgin fiber. Both trees and non-wood fibers can be cultivated as sustainable
sources of virgin fiber, reducing the need to destroy old growth forests for
paper. Additionally, the per-acre fiber yield from some non-wood virgin fibers
appears to be higher than that from tree farms.
What is the Forest Stewardship Council?
Recently, some United States commercial forests have undergone a sustainable
harvest certification process overseen by the Forest Stewardship Council (FSC),
a non-profit organization set up to encourage the use of sustainable practices
in forestry worldwide.

©2008
archive
|