Try to use horizontal strands when printing

Paper is divided into horizontal and vertical strands. In the papermaking part of the papermaking process, since the pulp (plant fiber) flows vertically to the moving screen, the fibers are suddenly accelerated, and most of them are connected along the moving direction of the screen, forming what we call Vertical and horizontal strands of silk. The plant fibers in the paper are hollow and translucent tubes. We can say it vividly: the length of the fiber itself is what we call the longitudinal strands, and the direction between the fibers and the fiber is the horizontal strands. The experimental results show that the cohesive force of the fiber itself is greater than the bonding force between the fibers (mainly hydrogen bonding force). After the paper is damp, the expansion and contraction in the longitudinal direction is smaller than the expansion and contraction in the transverse direction, and the two are roughly 1:2. Therefore, products with more accurate overprinting must consider the deformation relationship of the vertical and horizontal strands of the paper. Therefore, when printing, make the paper's longitudinal yarn direction parallel to the cylinder axis, and keep the same batch of printing paper in the same direction.