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GLASSINE
Translucent, cellulose based paper.
GRAIN
The direction in which most of the fibers lie in a finished sheet
of paper. Paper folds more easily with the grain.
GRAIN LONG
A term used to designate that the grain of the paper is parallel
to the longest measurement of a sheet of paper.
GRAIN SHORT
Grain of paper runs at right angel to the longest dimension of the
sheet.
GUM
The adhesive that seals an envelope. The most common envelope gums
are: Seal Flap Gum, Back Seam Gum, Patch Gum and Latex Gum.
GUMMER "SEAL"
A rubber roller that rolls on an envelope's seal gum.
GUMMER "SEAM"
Made of brass or block synthane material, seam gummers apply gum
to the side flaps of envelopes. The newest applicators are high
speed spray nozzles that are triggered by an electronic eye.
GUMMER "WINDOW"
Window gummers are made to fit the window size and patch. They allow
the window material to be applied at high speed.
GUSSETS
Envelopes with expanding accordion pleats for extra capacity.
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