Paper made from mechanical pulp, thermomechanical pulp, or chemithermomechanical pulp, and also chemical pulp. The proportions of mechanical pulp and chemical pulp vary, depending on the application. Papers, which contain a high proportion of mechanical pulp like newsprint, yellow more quickly, if exposed to light, than do wood-free papers. Therefore, they are used primarily for short-lived products. Mechanical paper was originally used only for paperbacks and other titles of passing value. Mechanical pulp improves opacity of printing papers. See also BROWNING CHEMICAL PULP LIGNIN PAPER WOOD-FREE PAPER

This paper contains mechanical pulp, thermomechanical pulp (TMP) or chemithermomechanical pulp (CTMP) and also chemical pulp. The shares of chemical and mechanical pulp vary depending on the application. Highly mechanical papers such as newsprint tend to yellow more rapidly if exposed to light and oxygen than woodfree papers so that they are mainly used for short-lived products. In printing papers the mechanical pulp improves opacity.

Paper that contains mechanical wood pulp.