Paper deterioration impurities

The potential permanence is built into paper at the time of manufacture it is determined by the materials used and the processes of manufacture. Three important factors are recognized (1) deterioration of the cellulose fibers prior to manufacture into paper and the presence of noncellulose components (2) the introduction of additives (sizing, loading, etc.) to the papermaking stock and (3) the presence of deleterious impurities originating from the fiber furnish, additives, process water, and mill equipment. 

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