Lateral structurein refers to the direction of the resulting tile along the structurein. Lognitudinal structurein, refers to the direction of paerboard along the production line speed for the birth of structurein. Any structurein, refers to any direction along the rugged structurein produced. Arch of the glossy paper surface is called a domed, arch in the paper surface described as negative structurein, in the paper the rugged surface is referred to as positive and negative structurein.

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