打浆工艺对造纸法再造烟叶基片松厚度的影响

The Influence of Beating Process on Bulk of Uncoated Reconstituted Tobacco Sheet Produced by Papermaking Process

关键词:  造纸法再造烟叶  PFI磨  打浆  松厚度  纤维形态

Key Words:papermaking reconstituted tobacco  PFI mill  beating  bulk  fiber morphology

摘要:采用PFI磨对烟草浆进行打浆，分别研究了磨浆转数、磨齿间隙和打浆浓度对造纸法再造烟叶基片松厚度的影响，同时通过对不同打浆参数条件下得到的烟草浆纤维形态的对比，探讨了打浆工艺对造纸法再造烟叶基片松厚度的影响。结果表明，烟草浆打浆过程中，随着磨浆转数的减少，磨齿间隙的增加以及打浆浓度的提高，纤维数量下降、平均长度上升、粗度增加，与木浆、轻质碳酸钙混合抄造出的基片松厚度提高；在本实验打浆工艺范围内，磨浆转数和磨齿间隙对烟草浆纤维形态以及抄造出的基片松厚度的影响大于打浆浓度的影响；由于烟草浆纤维本身的特点，不同的打浆工艺对其帚化效果影响很小；适宜的PFI磨打浆工艺为：磨浆转数10000~15000转，磨齿间隙0~0.5 mm，打浆浓度10.0%~11.7%。

Abstract:Influence of the gap between the beater roll and bed plate of PFI mill, beating time and consistency of tobacco pulp on bulk of uncoated reconstituted tobacco sheet produced by papermaking process was researched using PFI mill as the beating equipment. Meanwhile through the comparison of fiber morphologies under different beating process parameters, the reason for the influence of beating process on bulk of uncoated reconstituted tobacco sheet produced by papermaking process was also researched. The results showed that in the beating of tobacco pulp, fiber number decreased, mean fiber length increased, fiber coarseness increased, bulk of paper base made with wood pulp and PCC was improved with decreasing beating time, increasing beating interstice and pulp consistency. Within the ranges of beating parameters studied, compared with consistency of pulp, beating time and beating interstice had greater effect on fiber morphology and bulk of paper base. Because of the characteristics of tobacco pulp, different beating process parameters had little effect on fibrillation of fiber. The optimized beating process parameters with PFI mill was: beating time 10000～15000 round, beating interstice 0～0.5 mm and pulp consistency 10.0%～11.7%．