Tang L.,Zhejiang University of Technology |
Ji Y.-P.,Zhejiang University of Technology |
Qian J.-H.,Minfeng Special Paper Co. |
Gao C.-L.,Zhejiang University of Technology |
Shan W.-G.,Zhejiang University of Technology
Chinese Traditional and Herbal Drugs | Year: 2013
Objective: To explore the advantages of decompression extraction applied in the preparation of Sansheng Hehuang Decoction (SHD). Methods: The process parameters of decompression extraction of SHD were optimized using synephrine and magnolol as indexes, the active components content, extract yield, extract powder characteristics, and volatile components by decompression extraction and atmospheric extraction were compared, and the microcosmic structures of synephrine and magnolol were observed. Results: The optimum extraction parameters were as follows: vacuum degree of 0.08 MPa (60°C), extracting twice for 30 min each time, and solid-liquid ratio of 1:10. Compared with the extraction at normal pressure by water, the content of synephrine increased by 13%, the extracting rate of magnolol increased by 10% while the extracting rate of timosaponin BII was almost the same, and the yield of the dried extract decreased by about 33%. The kinds of volatile components by decompression extraction were almost the same as those by atmospheric extraction, but the yield was lower than that by atmospheric extraction. Besides, the powder characteristics including flowability and hygroscopicity of the extract prepared by decompression extraction were similar to those by water extraction and alcohol precipitation at normal pressure. Scanning electron microscopy showed that the decompression extraction did not break the cell wall, and the cells presented arrangement disorder and shrinkage, while the cell integrity was better than that extracted at normal pressure. Conclusion: In regard to energy consumption, extraction effectness, and convenience to the subsequent preparation, the decompression extraction method is superior to the traditional atmospheric extraction method, and it could be applied in the extraction process for Chinese materia medica preparations.
Jin S.,Huzhou Teachers College |
Lu H.,Minfeng Special Paper Co. |
Jia Y.,Huzhou Teachers College |
Cheng G.,Huzhou Teachers College
Advanced Materials Research | Year: 2012
After analyzing the movement requirements of the manipulators, we selected the movement form and control system of the manipulators, and do the PLC programming according to the movement flowchart of the manipulators. The manipulators can continue working under the poor working conditions, so that improve the working conditions for the workers, reduce labor intensity, and Raise the level of automation. The material of the manipulator clamping device was required that has good durability and abrasion resistance, hardenability carburizing steels 20CrNi3 is selected. After carburizing, quenching and low-temperature tempering, the alloy element and the carbon come together to form a sufficient number of carbide and martensite when heat treatment, guaranteeing high hardness, abrasion resistance and hot hardness, high alloy element content also improves the hardenability and temper resistance to ensure enough strength and toughness. © (2012) Trans Tech Publications, Switzerland.
Li F.,CAS Anhui Institute of Optics and Fine Mechanics |
Dong H.,China National Tobacco Quality Supervision and Test Center |
Zhang L.,CAS Anhui Institute of Optics and Fine Mechanics |
Jing Y.,China National Tobacco Quality Supervision and Test Center |
And 6 more authors.
Tobacco Science and Technology | Year: 2013
In view of the absence of domestic meter for measuring the intensity of pressing pattern on cigarette paper, a meter was designed based on machine vision, which was composed of an illuminating system, an image acquisition system and control software. The illuminating system adopted a ring light source of low angle, and the image acquisition system adopted an imported industrial camera and lens. The control software's functions included pressing pattern's orientation recognition, image rotation, statistical projection and pressing pattern intensity calculation. Comparative experiment results showed that the intensity of pressing pattern on cigarette paper measured by the designed meter was significantly correlated to that measured by imported meters of the same type, and stability test results indicated that the designed meter featured better stability.
Ning M.,China Tobacco Anhui Industrial Co. |
Zhou S.,China Tobacco Anhui Industrial Co. |
Xu Y.,China Tobacco Anhui Industrial Co. |
Hu Y.,Hefei University of Technology |
And 8 more authors.
Acta Tabacaria Sinica | Year: 2013
Scanning electron microscopy and electronic universal testing machine were applied to investigate relationships between physical parameters, morphologic structures and mechanical properties of paper-making process reconstituted tobacco base material. Thermogravimetric, micro-scale combustion calorimetry and cone calorimetry were used to test effects of physical parameters on its thermal degradation and combustion properties. Results indicated that (1) increase of permeability might be the main factor of tensile strength declining and elongation at break of paper-base. The microstructure of paper-base was mainly composed of thick and long fibers and curly thin and short fibers. Increase wood pulp content could result in big increase of relative proportion of curly thin and short fibers; (2) thermal degradation process of paper-base mainly includ five stages. Permeability was dominant factor that influenced thermal stability of paper-base; (3) compared with permeability, grammage exerted more significant influence on combustion characteristics of paper-base. When grammage was fixed, decrease of permeability could reduce slightly flammability and combustibility of paper-base; (4) increase of permeability could make paper-base possess higher smoke release rate after ignition; (5) relatively high permeability could also make paperbase release CO more quickly during combustion process.
Gong X.-D.,Minfeng Special Paper Co. |
Zeng D.-Y.,Minfeng Special Paper Co.
Chung-kuo Tsao Chih/China Pulp and Paper | Year: 2014
The design and operation of steam and condensate system of the special paper machine were introduced. In order to improve the pre-dryer ability, decrease the load of after-dryer, meet special technology requirements in LWC paper and Glassine paper production, the system was well adjusted, reformed and optimized to satisfy the equipment design capability and requirements of product development.
Huang F.,China Tobacco Hunan Industrial Co. |
Liu B.,China Tobacco Hunan Industrial Co. |
Wang P.-J.,Minfeng Special Paper Co.
Chung-kuo Tsao Chih/China Pulp and Paper | Year: 2012
The menthol is easy to escape from mentholated cigarettes during production, transportation, storage and sale due to its strong volatility when the conventional manufacture process is used. In order to solve these problems the microcapsules of menthol were prepared. The results showed that the encapsulated menthol added to cigarette paper by printing techniques can upgrade the quality of mentholated cigarettes.
Huang C.,Minfeng Special Paper Co. |
Zhou M.-H.,Minfeng Special Paper Co. |
Li D.,Minfeng Special Paper Co. |
Feng Y.-P.,Minfeng Special Paper Co. |
Ding L.,Minfeng Special Paper Co.
Chung-kuo Tsao Chih/China Pulp and Paper | Year: 2016
Waste coated paper recycled pulp was prepared using vacuum metallized base paper as saw material. The source, morphology, component and contribution rate to anion trash of the macro stickies, micro stickies and dissolved and colloid substances were studied by SEM, infrared spectrum and partical charge detector respectively. The conclusion was drawn that SBR was the main source of stickies, pigments were wrapped by macro stickies, micro stickies were absorbed by calcium carbonate,and DCS was dispersed stably in water which caused most of the anionic trash. The macro stickies could be eliminated from the white water in papermaking, while on control of the micro stickies and DCS could be realized by adding 0.2% cationic modified polyethyleneimine. © 2016, China National Pulp and Paper Research Institute(CNPPRI). All right reserved.