This would mean that the grain direction should be parallel to the printing cylinders. It is possible to compensate for this, in the circumferential direction but not laterally. While printing, this can cause problems in colour registration. Paper expands across / against the grains. Depending on whether the longer or shorter side of the sheet is in the grain direction, the sheet is called LG (Long Grain) or SG (Short Grain) What is the significance of grain direction in printing & binding? The sheets are then cut out of these reels. As you know, paper is manufactured in the form of large reels. Long grain and short grain sheets cut from reelÄuring the manufacture of paper, the paper fibre orient in the direction of flow of pulp and this is known as the grain direction or machine direction.
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