pulp
The mechanically and/ or chemically prepared
mixtures obtained from vegetable fibers and used
in the manufacture of paper and board. The general
classes of paper pulp are listed below. Any of the
various pulps listed may be further classified as
unbleached, semi-bleached, or bleached.
I. Wood pulp
A. Mechanical
1. Groundwood
2. Defibrated
3. Exploded
B. Chemical
1. Sulfite
2. Neutral sulfite
3. Sulfate
4. Chemical cellulose (sulfate and sulfite)
a. Papermaking alpha pulps
b. Chemical conversion pulps
5. Soda
6. Semi-chemical
7. Chemigroundwood
8. Screenings
9. Miscellaneous
11. Cotton fiber or rag pulps
III. Reclaimed papers
A. Paper stock
B. De-inked paper stock
C. Paper shavings and cuttings
IV. Other fibrous pulps
A. Manila hemp
B. Jute
C. Esparto
D. Cereal straw
E. Seed flax straw
F. Bagasse
G. Bamboo
H. Reeds
I. Leaf fibers
J. Kenaf
K. Miscellaneous fibers
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