Ramie external fiber for tobacco sheet and preparing method thereof

Abstract

The invention discloses a ramie outer fiber used for tobacco sheets and a preparation method thereof, and belongs to the technical field of papermaking sheets in the tobacco industry. The ramie outer fiber of the present invention is a kind of ramie fiber extracted from ramie with a length of ≤ 6mm and has a relatively high fibrillation structure. Among the ramie fibers, fibers with a length greater than or equal to 2mm and less than or equal to 6mm account for 85% of the total fiber amount. above. Preparation method: 1) Preparation of raw materials Cut hemp meat into 20mm length sections; 2) Refining and drying twin-screw refiner for secondary refining; 3) Crushing in a blade mill with a 6mm aperture sieve plate Carry out pulverization; The following steps are pulp washing, dehydration and drying to obtain the product ramie outer fiber. The ramie outer fiber of the invention has moderate length, good taste absorption, no miscellaneous gas, can increase the softness of the sheet, reduce the loss rate, and has a high retention rate. The preparation method is simple and easy to implement, and is an environment-friendly preparation method.

Description

technical field [0001] The invention belongs to the technical field of papermaking sheets in the tobacco industry, in particular to a ramie outer fiber used for tobacco sheets and a preparation method thereof. Background technique [0002] In the prior art, the quality of imported flakes is better, but the price is high, and the flakes are only a kind of auxiliary material blended in tobacco, and should not occupy a relatively high cost ratio. Compared with imported flakes, domestic flakes have defects such as roughness and stiffness, uneven distribution of internal fibers, and large difference between the two sides. At the same time, there are technical problems such as low retention rate of fine fibers and low product yield. In the prior art, no matter at home or abroad, in order to improve the performance of the sheet, a certain amount of additional fiber is often added to the sheet, which is called external fiber. The materials used as outer fibers are mostly wood pulp,...

AI Technical Summary

Problems solved by technology

The materials used as outer fibers are mostly wood pulp, bamboo pulp and raw hemp pulp (hemp pulp made of hemp stalks, that is, hemp bone). Bad rate and other issues

Moreover, most of the above-mentioned pulps are pulp sheets produced by other companies. When tobacco companies use these pulp sheets, they need to be refined. The process of refining is to crush the fibers again. The pulp sheets are broken again. The length of the rear fiber cannot be controlled, which further affects the decline of the retention rate