The Development Of The Application For The Three-unit Electrostatic Perforation System Of Tipping Paper

We all know that smoking is harmful to our health. Through years of research work, we'd discovered that tar content is mainly harmful substance in smoking. Because the level of tar content is of great relevance to our health, how to decrees it has been a question for discussion problem in tobacco industry. Chinese government recently issued a decree to require domestic cigarette manufacturers to stop producing cigarette with tar over 17mg. The most effective physical way to reduce tar content is perforation on cigarette tipping paper to dilute smoke, therefore cut down the harm to health. Perforation on cigarette tipping paper includes three methods: mechanical, laser and static. This article introduces a system of the three-unit electrostatic perforation of tipping paper. It's accomplished on the foundation of summing up the experience of domestic and foreign experts in static perforator for tipping paper, and cooperated with Yuxi Hongta printing Ltd. in Yunnan province. By using PLC in the two parts, the rewinder / unwinder and the static perforation, the system realizes the reliability and perfect efficiency of control, satisfies the needs of reducing tar in tobacco industry.As originate in both national anji international, the multi-unit electrostatic perforation of tipping paper has made a new breakthrough compared with the traditional perforation system which perforating only for single coil or having one-unit. It has caused significant improvement no matter in perforation efficiency or porosity of tipping paper. At the same time, it inaugurated a new era in static perforation in our country, and represented an advanced level in international tobacco industry. To this technique, the dissertation presents a discussion and summarization at large. It has great significance in both theoretic and practicality in improving the technological level of tobacco industry in our nation.By participating in the whole project, we achieved the main research results as follows:(1) According to the facts of our country's tobacco industry, we brought forward a idea creatively in developing a new system of the three-unit electrostatic perforation of tipping paper. For this new idea, we have put it into practice and made a good success.(2) For PLC has many advantages in process control in industry, we used it in the two parts of the system, the rewinder / unwinder and the static perforation, and realizes the reliability and perfect efficiency of control. At the same time, we summarized the experience in the past and given a good design to the formulation and control of perforation pulse.(3) We also studied the relationship among the speed of scroll, the perforation frequency and the porosity in the basis of production data. In order to improve the level of automation, a new method was present firstly by myself about using the ANN (the Artificial Neural Network) to the porosity control of tipping paper. We have used the mode of BP Network in ANN to approach the characteristic curve of perforation power and porosity, and taken a good result.At last, the achievement and conclusion of the project we have finished are summarized, and some suggestions for the forward work of this system are presented.