解纤预处理对烟梗浆料以及基片性能的影响

Effect of Defibration Pretreatment on Tobacco Stems and Physical Properties of Reconstituted Tobacco Sheets

关键词:  烟梗  解纤  纤维形态  松厚度  匀度

Key Words:tobacco stems  defibration  fiber morphology  bulk  sheet formation

摘要:在解纤电流80、100、120 A的条件下分别对烟梗浆料进行轻度、中度和重度解纤，研究了在烟草薄片生产中的解纤预处理对烟梗浆料性能及基片松厚度和匀度的影响。结果表明，解纤预处理可以提高浆料的打浆性能，但解纤程度过低或者过度，都不利于纤维长度和粗度的保持。适度的解纤预处理可显著降低后续打浆过程段数，节约能耗。解纤预处理后的浆料打浆段数宜保持在二段到三段。在二段打浆后，随着解纤预处理程度的加深，烟梗基片的匀度系数从336.1降低到277.8，匀度提升了17.35%；同时基片的松厚度从2.15 cm³/g降低到1.91 cm³/g，减少了11.16%。为满足再造烟叶匀度和松厚度的要求，需采用中度解纤预处理。

Abstract:The effect of defibration pretreatment on the reconstituted tobacco pulp and the bulk and uniformity of the reconstituted tobacco sheet was analyzed. The tobacco stems were treated with mild， moderate and heavy defibrillation under the current of 80， 100 and 120 A， respectively. The results showed that defibration could improve the beating performance of tobacco pulp. However， insufficient or excessive defibration was not conducive to the maintenance of fiber length and coarseness. A moderate defibration could significantly reduce the number of beating stages and save energy consumption. Two to three stages beating should be suitable after defibration. Using two stages beating， along with deepening the defibrillation degree， the formation coefficient of the tobacco sheet reduced from 336.1 to 277.8， and the formation increased by 17.35%， at the same time， the bulk reduced from 2.15 cm³/g to 1.91 cm³/g， reduced by 11.16%. Moderate defibrillation pretreatment was used to meet the requirements of bulk and formation of the reconstituted tobacco.