Nanjing packaging manufacturers pointed out that carton packaging and cardboard are an old packaging printing material that remained dominant until the 1980s. China's carton packaging and cardboard account for 40-50% of the packaging materials, occupying the first place. Paper and cardboard for packaging materials in carton packaging and total paperboard production also account for 40-50%. With the development of carton packaging plants, there will be a big development in packaging carton paper and paperboard. This article will introduce you to Beijing printed materials multi-layer board.
Entering the Eastern Jin Dynasty, the printing materials for papermaking were changed to marijuana, and the paper made from marijuana was durable and beautiful. This paper is very close to rice paper. Xuan paper has been a very good quality printing material. Liang Wudi once recited poems, "White as frost and snow, Founder if you play chess, announce and remember, Ning Tong fish net." It is probably about Xuan paper printing materials. Since the Wei, Jin, Southern and Northern Dynasties popularized the three religions in this period, Emperor Wu of Liang said in his "The Three Poetry of the Three Poems" that he "study the Zhou Kong in a small time", "the Zhongfu Guandao Book", "the release of the later years, the moonlight "Star", and finally reached "to the point of no reason." It shows how important it is.
The improvement of paper, ink, pen and printing materials has become more and more simple, which has increased the spread of words and articles, thus promoting the development of cultural undertakings. The corresponding novels have also made corresponding progress at this time. . Although Liang Shuxiao's "Seven Records" is a private bibliography, it has a great influence on later generations.
Some food factories do not use food packaging special inks when using paper food packaging printing materials, and most of these non-special inks contain organic solvents such as toluene, which may cause excessive benzene solvents in foods, and benzene solvents are more toxic. GB 9685 standard is not allowed to use), if it penetrates into the skin or blood vessels, it will endanger the human hematopoietic function, damage the human nervous system, and even lead to leukemia.
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