machine direction
The direction in which the greater number of the
fibers of a sheet of paper tend to be oriented as
a result of the forward motion of the wire of the
papermaking machine. The paper so produced is
stronger in the machine direction, and also
experiences less dimensional variation in the
machine direction due to changes in humidity. The
direction at right angles to the machine direction
is known as the CROSS
DIRECTION . Also called grain or "grain
direction." (82 )
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