Technology Recovery Research On The Japanese Paper-making Method Of “Tian Gong Kai Wu”

"Tian Gong Kai Wu "is a comprehensive scientific and technical works of the Ming Dynasty in China,covering agriculture, handicraft production of more than ten areas of technical information. Domestic and foreign scholars have a high evaluation of it.British science historian Joseph Needham said Song Yingxing for China’s Diderot and the famous French scholar Ru Lin praised the "Tian Gong Kai Wu "is a set of technology knowledge.The rich scientific and technical records in the writings make it have great significance in the fields of history of science and technology,archeology and folklore.This paper studies the Japanese paper-making technology (hereinafter referred to as the "Japanese paper-making method")on the paper part of volume 13 "Shaqing"of "Tian Gong Kai Wu", to recover the technology of "Japanese paper-making method" through the simulation experiments.After a number of simulation experiments and improvement experiments of a series of processes including raw material collection and processing, pulping, brushing paper,uncover paper,the verification of the record is true.The restoration study restores the truth of the technique and completes the work that the author Song Yingxing failed to achieve during his lifetime.Observation and detection analysis can be drawn, paper of "Japanese paper-making method" in the surface characteristics and internal fiber distribution is similar to pouring paper method.Specific manifestations: the paper of "Japanese paper-making method" surface is no obvious curtain, fiber distribution without direction and uneven,which can be matched with the pouring paper method.But the pouring paper method than the "Japanese paper-making method" into a more rough paper, the thickness of large.Japanese paper-making method is also similar to the pouring paper method, in the technical characteristics.Specific manifestations:the technical principles of pulp in the water to participate in the conditions of free movement and pulpsprayed in paper curtains in the water shock uniformity of pouring paper method have similarities.The distribution of pulp and the overall performance of the level of non-directional.And there are subtle differences in performance: "brush" with thin pulp, and the process can be improved as much as possible to increase the amount of water involved in order to ensure a better degree of fiber dispersion, making the paper surface fiber distribution more evenly.In addition, in the dry paper step, the"Japanese paper-making method" with a stone directly to the temperature of the dry paper than the pouring paper method using outdoor natural light drying paper significantly shortened the time required.A device can also be recycled without the need for multiple paper screens.Compared with Mengding Dai paper and Menghai Dai paper, paper of"Japanese paper-making method" in the tensile strength, smoothness and other physical properties better,but worse than Heqing Bai paper.The research of "Japanese Paper-making method" has explored the difference between the existing paper-making system, and found the origin of this paper-making method.It is of great significance to promote the integration of paper-making technology, and to carry forward the traditional crafts.