Research Progress of Domestic Heated Tobacco Core Material Preparation Technology
In this paper,according to the type of products,the patents applied by domestic enterprises in recent years on the process technol-ogy of heated tobacco core material preparation were counted,analyzed,sorted out and summarized,focusing on the research progress of do-mestic heated tobacco core material preparation process technology from the perspective of patents.The analysis indicated that the number of patents for the preparation of heated tobacco core material based on four processes including papermaking method,thick pulp method,roller pressing method and dry method,totaled 52 patents,among which the roller pressing method had the largest number,papermaking method and dry method had similar numbers,and thick pulp method had the smallest number,and the applications from the tobacco industry ac-counted for 92.3%.