Papermaking

DEFINITION

The basic papermaking proces takes advantage of the ability of plant cell fibers (cellulose) to adhere to each other when a watery pulp made from the fibers is spread on a screen called a deckle, and dried. Today, paper is made principally from wood pulp combined with pulps from waste paper or, for fine grades of paper, with fibers from cotton rags. For newsprint, tissues, and other inexpensive papers, the pulp is prepared mechanically, by grinding the wood, sometimes boiling it with various chemicals. The pulp is poured onto a deckle, where the water drains away and the fibers begin to mat. The paper layer then passes through a series of rollers that dry, press, and smooth it, and add various finishes.<br><br>The basic papermaking proces takes advantage of the ability of plant cell fibers (cellulose) to adhere to each other when a watery pulp made from the fibers is spread on a screen called a deckle, and dried. Today, paper is made principally from wood pulp combined with pulps from waste paper or, for fine grades of paper, with fibers from cotton rags. For newsprint, tissues, and other inexpensive papers, the pulp is prepared mechanically, by grinding the wood, sometimes boiling it with various chemicals. The pulp is poured onto a deckle, where the water drains away and the fibers begin to mat. The paper layer then passes through a series of rollers that dry, press, and smooth it, and add various finishes.

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