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Qin G.,CAS Zhengzhou Research Institute | Wang D.,China Tobacco Fujian Industrial Co. | Li B.,CAS Zhengzhou Research Institute | Zhu W.,CAS Zhengzhou Research Institute | Wang P.,CAS Zhengzhou Research Institute
Tobacco Science and Technology | Year: 2013

The residence time of cut tobacco in a rotary cylinder was studied with an in-house cold state experimental platform, the variations of residence time at different rotating speeds and inclination of the cylinder, air velocities, cut tobacco infeed rates and moisture contents were investigated separately. Basing on Friedmam-Marshall model, a mathematical model for predicting cut tobacco residence time was developed by introducing moisture content as a correction factor and the incorporation of all influencing factors, and the developed model was validated. The results showed that: 1) The moisture content in tobacco was an important factor in the determination of residence time of cut tobacco in a rotary cylinder, however, it was exclusive of the conventional predicting model. 2) When the conventional model modified with moisture content was used to predict the residence time of cut tobacco, the deviation between predicted value and tested value decreased, while the precision of model increased. Source


Trademark
China Tobacco Fujian Industrial Co., Xiamen Tobacco Industrial Co. and Xiamen Cigarette Factory | Date: 2007-06-26

Tobacco; cigars; cigarettes.


Wang Y.,CAS Zhengzhou Research Institute | Zhu W.,CAS Zhengzhou Research Institute | Liu K.,CAS Zhengzhou Research Institute | Li Q.,China Tobacco Fujian Industrial Co. | And 5 more authors.
Tobacco Science and Technology | Year: 2015

In order to analyze the changes of physical properties of, moisture content and aroma components in cut strips in dual-temperature cylinder drying, the filling values and elasticity of cut strips dried in cylinder at constant temperatures of 100, 120, 130, 140, 150℃ and at temperature combinations of 150/100 (first section temperature/second section temperature), 140/100, 130/100 and 120/100℃ were determined, and the contents of petroleum ether extracts and aroma components in cut strips dried at constant and varied temperatures were compared. For the temperature combination of 140/100℃, experiments were conducted by changing cylinder wall temperature when tobacco moisture contents reached 19%, 17%, 15% separately. The results showed that: 1) Under high/low temperature combination conditions, the drying efficiency of cut strips was obviously promoted by rising cylinder wall temperature at earlier drying stage. 2) Comparing with constant high temperature drying, high/low temperature combination was helpful to improving the elasticity and filling value of cut strips, meantime, the aroma components, such as brown reaction products and carotenoids degradation products, increased obviously. 3) Under dual-temperature drying, the filling value of and total aroma component content in dried cut strips would decrease, while its elasticity would increase when temperature transition point was the moisture content reached 15% instead of 19%. ©, 2015, Editorial Office of Tobacco Science and Technology. All right reserved. Source


Zhang H.,China Tobacco Fujian Industrial Co. | Shen J.,China Tobacco Fujian Industrial Co. | Lin Y.,Longyan Tobacco Industrial Co. | Lin Z.,China Tobacco Fujian Industrial Co. | And 2 more authors.
Tobacco Science and Technology | Year: 2013

To solve the problems, such as decentralized R&D data management, lack of effective R&D process control and management, insufficient coordination between R&D and manufacture, etc, a PDM-based cigarette product R&D management system was designed by introducing of PDM (Product Data Management) concept. With the architecture based on B/S system and adopting object-oriented technology, the designed system established a product data model by taking product composition as an object, and established a R&D process model by taking the key business unit, activity and role of R&D as objects. The system implemented close integration with MES (Manufacturing Execution System) and ERP (Enterprise Resource Planning) via the unified product data model. The results of application showed that the system consolidated the resource, process and data of R&D, realized the effective management and control of R&D data and process, and enhanced the collaboration between R&D and manufacture. Source


Xu D.,CAS Zhengzhou Research Institute | Du J.,CAS Zhengzhou Research Institute | Li Y.,China Tobacco Fujian Industrial Co. | Chen H.,China Tobacco Fujian Industrial Co. | And 5 more authors.
Tobacco Science and Technology | Year: 2015

For determining the airtightness of cigarette packets accurately, a negative pressure air extraction method was studied, the key test parameters were determined and the method was verified. The airtightness of packets of major domestic cigarette brands was detected by this method. The results showed that: 1) The appropriate detection conditions were air extraction volume 200 mL/min, packet perforation depth > half of packet thickness. 2) The coefficient of variation of detection results was less than 1%, it indicated that the repeatability of this method was good. 3) The average airtightness of hard packets (-3.508 kPa) was better than that of soft ones (-1.138 kPa), and airtightness differed greatly between the hard and soft packets of different brands. The proportion of packets whose air tightness was better than the average level reached 60% for hard packets, while which was only 33.33% for soft packets. © 2015, Editorial Office of Tobacco Science & Technology. All right reserved. Source

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