Tobacco stem pressing and shredding technology

The invention discloses a tobacco stem pressing and shredding technology and belongs to the technical field of tobacco processing. The technology comprises the steps of conducting high-temperature high-pressure and decompression preprocessing on tobacco stems, conducting microwave expansion on tobacco stems, humidifying and storing tobacco stems, heating and humidifying tobacco stems, pre-pressing tobacco stems, conducting secondary stem pressing, conducting ternary stem pressing, feeding stems, shredding stems, shaping and drying stem shreds, and perfuming and storing stem shreds. The technology has the advantages that the quality consistency of stem shreds is good, the physical property of stem shreds is closer to that of leaf shreds, organoleptic quality and padding value are high, the uniformity, stability and blending ratio of stem shreds blended with leaf shreds are improved, cigarette quality is improved, the application range and utilization rate of stem shreds in cigarettes are increased, and tar reduction, harm reduction, cost reduction and benefit increasing are realized.