Kraftpulpitus

Kraftpulpitus is a term used in the paper and pulp industry to describe a hypothetical deterioration of kraft pulp fibers during storage or processing, with effects similar to inflammation in biological tissues. It is not a medically recognized condition but a conceptual label for process-related quality issues.

Etymology and status: The name combines kraft pulp, the chemical pulping method, with the suffix -itis. In industrial literature it serves to discuss how environmental and processing factors can compromise fiber integrity.

Causes and mechanism: Key factors include elevated moisture and temperature in storage, microbial contamination, enzymatic activity, and aggressive bleaching steps. The proposed mechanism involves hydrolysis and oxidative attack on cellulose and lignin, producing shorter fibers and increased fines, which weaken paper strength.

Symptoms and indicators: Indicators in pulp testing include higher fines content, reduced fiber length distribution, increased energy requirements for beating, lower tensile strength in resulting paper, and sometimes color changes or odor in storage.

Diagnosis and management: Diagnosis relies on standard pulp-quality tests (fiber length, fines, brightness, kappa), microscopy for colonies. Prevention emphasizes proper storage (low moisture, cool temperature), rapid processing, clean equipment, and controlled chemical exposure; treatment focuses on moisture control, adjusting processing parameters, and addressing contamination.

See also: Kraft process, chemical pulping, pulp bleaching. Note: Term usage varies and is illustrative rather than an official diagnosis.