Cotton paper

Cotton paper, also known as rag paper or rag stock paper, is made using a cotton linter or cotton from used cloth (rags) as the primary material. Important documents are often printed on cotton paper, because it is known to last many years without deterioration. Cotton paper is superior in both strength and durability to wood pulp-based paper, which may contain high concentrations of acids, and also absorbs ink or toner better. Different grades of cotton paper can be produced.