Glossary - International Paper

Density - The density of paper is its specific gravity or weight per unit
volume. Directly related to the paper’s absorbency, stiffness, opacity,
and resiliency. It is calculated from basis weight and caliper.
Diameter - Measurement of the widest point across the end of the roll.
Digester - Pressure vessels in which wood chips are cooked to
separate fibers from each other and to remove detrimental particles.
Dimensional stability - Characteristic of paper to retain its dimensions
in all directions under the stress of production and adverse changes in
humidity or moisture content.
Dirt - Dirt in paper consists of any imbedded foreign matter or specks
which contrast in color to the remainder of the sheet.
Doctor-blade - (1) Mechanism used during manufacture to clean the
surface of the paper (excess pulp and size) while on the paper machine
roll. (2) In gravure printing, used to wipe away the excess ink in the
non-printing areas of the plate.
Double- coated - A sheet that has been coated twice on the same
side.
Dryers - A series of large cylindrical steam heated rolls that dry the
paper webs to the final moisture content.
Dry-end - The section on the machine where the dryers, cutters,
slitters and reels are located.
Dry finish - Term indicating that paper or paperboard is calendered
without use of water. Also, paper with unglazed, rough finish obtained
by the dry finish process.
Dunnage bags - Protective, inflatable bag used in shipping to protect
product from transit damage due to shifting and rough handling.
Glossary
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International Paper
Coated Paperboard Business
6420 Poplar Avenue
Memphis, TN 38197
Toll Free: (888) 815-4873