Introduction to paper technical terms
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Basis Weight - The weight of the paper indicates the basic unit "g/m2" expressed in grams per square meter.
Order - The unit for calculating the number of papers, generally referred to as 500.
A bundle - each flat sheet of paper packaging unit, may have a bundle of 100, 250, 500.
Weight - The weight of each paper is converted to pounds by base weight by paper size.
Thickness - The system is generally indicated by a bar, 1 bar = 0.01 mm, and the thickness of the paper indicates the unit.
Coated paper - Paper that has been coated and calendered on the surface, the paper is smooth and lint-free, and the stretchability is low for color and fine screen printing.
Uncoated paper - The surface is sizing, the uncoated paper, the paper is thicker and the ink absorption is strong, and it is generally used for printing on lines or thick lines.
Recycled paper - Remanufactured from recycled paper, uncoated paper on paper.
Cardboard - A paper with a basis weight of 200 g/m2 or more, called thick cardboard.
Dimensions - expressed in metric mm by mm or in inches of paper.
The commonly used flat sheet size specifications are as follows:
English notation: 25"X35" Metric notation: 635mmX889mm
English notation: 31"X43" Metric notation: 788mmX1092mm
Web - The paper is packaged in roll-to-roll format and is suitable for use in commercial printing rotary machines. The markings are wide-width, length m, weight Kg, and paper basis weight g/m2.
Silk direction - The direction of arrangement of the fibers is affected by the speed of the paper machine, the flow of water and the moisture of the press. There will be a phenomenon in which the longitudinal direction is parallel along the direction of the paper machine, which is called the wire direction.
Straight silk paper - the direction of the filament flow parallel to the long side of the paper, called straight wire.
Cross-web paper - the direction of the filament flow parallel to the short side of the paper, called the horizontal thread.