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Dec 22
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The grain on paperboard refers to the direction in which the fibers in the paperboard are aligned. When paperboard is manufactured, the fibers are typically aligned in one direction, either the machine direction (MD) or the cross direction (CD).
Mar 23
Paperboard point thickness is another way to express the caliper or thickness of paperboard. It refers to the thickness of a single sheet of paperboard in thousandths of an inch or "points." One point is equal to 0.001 inches or 0.0254 millimeters.
The caliper and GSM (grams per square meter) are both measurements used to describe the thickness and weight of paperboard, but they are not the same thing
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