Method for determining tensile strength of reproduced tobacco leaves of papermaking method by near-infrared diffuse reflection spectrum

Abstract

The invention discloses a method for determining the tensile strength of reproduced tobacco leaves of a papermaking method by a near-infrared diffuse reflection spectrum. The method comprises the following steps: (1) collecting and preparing a sheet-shaped sample with representativeness; (2) collecting an original spectrum; (3) selecting a correction sample set and a verification sample set; (4) determining a sample reference value; (5) pre-treating the spectrum; (6) establishing a PLS model; (7) verifying the model; and (8) determining the tensile strength. The method disclosed by the invention is simple, feasible and rapid; the analysis efficiency can be improved and the cost is saved by adopting a near-infrared spectrum nondestructive testing technology; the detection efficiency for accurately determining the tensile strength of the reproduced tobacco leaves is improved; and the product quality is objectively reflected and the practicability is obvious. The method has the advantages of rapid detection speed, no pollution, greenness and environmental pollution, high accuracy, good repeatability and the like, and is suitable for field analysis and rapid detection of the tensile strength of the reproduced tobacco leaf products, and online monitoring of the fluctuation of the product quality.

Description

technical field [0001] The invention relates to a method for measuring the tensile strength of reconstituted tobacco leaves by a papermaking method by near-infrared diffuse reflectance spectroscopy, and belongs to the field of reconstituted tobacco leaves by a papermaking method. Background technique [0002] Papermaking reconstituted tobacco is a product made by recombining and processing tobacco waste such as tobacco stems, tobacco powder and debris with the help of papermaking technology and equipment. It effectively uses tobacco waste and can reduce cigarette production costs. , promote the reduction of harm and coke in cigarette products, improve the quality of smoking, and improve the overall quality of cigarette products. [0003] The tensile strength of reconstituted tobacco leaves by papermaking method is one of its important physical indicators. Tensile strength refers to the maximum tension that a sample of unit width can withstand before breaking under the condit...

AI Technical Summary

Problems solved by technology

After the near-infrared diffuse reflection light enters the sample, it undergoes countless reflections, refraction, diffraction, and absorption, and then returns to the incident surface. This kind of analytical light loads the structure and composition information of the sample, and is a fast and environmentally friendly method. Detection technology. At present, there have been reports on the application of near-infrared diffuse reflectance spectroscopy to determine the chemical composition, style, and uniformity of tobacco, but there has been no report on the method for the determination of the tensile strength of reconstituted tobacco leaves by papermaking.

Images