This chemical cooking dissolves the lignin, freeing the individual cellulose fibers to form a strong, flexible mat known as pulp. Finally, the paper is trimmed into specific sizes and packaged for distribution.
Enhancing Paper Strength and Lightness Through Lignin Removal
Paper manufacturers typically rely on softwood species like spruce, pine, and fir, as their long cellulose fibers provide the necessary strength and flexibility. This coating fills the gaps between the fibers, resulting in a smoother, more opaque surface that improves ink holdout and image sharpness.
The diluted pulp stream, called the "furnish," is spread onto a rapidly moving wire mesh belt. This is done using chlorine or oxygen-based chemicals to remove any residual coloring agents while maintaining the integrity of the fiber structure.
Enhancing Paper Strength and Lightness Through Lignin Removal
Coating and Finishing To enhance the printing surface, the paper may undergo a coating process. Following refinement, the pulp may be bleached to achieve a bright white color.
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