新型齿磨盘解纤烟草薄片浆料的打浆工艺探究

Beating Performance of Reconstituted Tobacco Leaf Slurry Defibrated by the Refiner with a New Type of Plate

关键词:  打浆度  湿重  烟草薄片  PFI打浆  纤维筛分

Key Words:beating degree  wet weight  reconstituted tobacco leaf  PFI beating  fiber sieve

摘要:针对烟草薄片浆料的特殊性，研究了新型齿磨盘解纤烟草薄片浆料的打浆性能。研究表明，经新型齿磨盘解纤的烟草浆，呈现易打浆状态，在浆浓为8.0%、PFI磨打浆转数为1200 r时，打浆度可达到70°SR，湿重为1.3 g。浆料在匀度方面有了极大改善，纤维的质量分数比例分布呈两端小中间大的趋势，近似正态分布。打浆转数的增加对纤维长度和宽度的影响均较小，纤维粗度呈显著下降。随着打浆度的提高，烟草薄片的裂断长则是快速上升到一定数值后下降；松厚度和透气度均呈不断下降趋势。

Abstract:Aiming at the particularity of reconstituted tobacco leaf slurry， the beating performance of reconstituted tobacco leaf slurry defibrated by the refiner with a new type of plate was studied. Studies showed that the tobacco leaf slurry was easy to be beaten after defibrating. When beating with a PFI mill and beating concentration was 8.0%, beating time was 1200 r， the beating degree could reach 70°SR and the wet weight was 1.3 g. The proportion distribution of the mass fraction of the fiber was approximately normal distribution， it greatly improved the formation of the tobacco sheets. The increase of beating time had a low effect on the length and width of the fibers， and the fiber coarseness of the slurry decreased significantly. As the beating degree increasing， the breaking length of the tobacco sheet rapidly increased to a certain value then declined, the bulk and the air permeability continuously decreased．