A pH reading of 7.0 indicates neutrality. The book is then pressed repeatedly between steel rolls under great pressure, imparting the smoothness of the metal plate to a paper s surface. Plate surface papers are ideal for pen and ink, airbrush, and mechanical layouts. As each ply is pasted together the increased thickness and stiffness is described by the number of plies. Pulp - Cellulose fiber material extracted by chemical or mechanical means from wood, cotton or other organic or synthetic sources.
Pulp provides the fiber content in the furnish, which is used to form paper.
Rough Surface - A term used to describe a coarse, textured paper. Often used by artists when discussing the surface characteristics of watercolor paper. Sizing is applied to the paper to improve the drawing, painting or printing qualities such as moisture hold out and paper strength. Smooth Surface - A paper with a very smooth, hard finish. Ideal for pen and ink, marker, airbrush and mechanical layouts.