Food printing materials refer to paper, bamboo, wood, metal, enamel, ceramics, plastics, rubber, natural fibers, chemical fibers, glass and other products for packaging, food or food additives, and coatings that directly contact food or food additives. Since food packaging materials are in direct contact with food, it is necessary to ensure that the packaging materials themselves are safe, non-toxic and non-volatile. This article will introduce you to the signature printing materials.
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.
Glass is a melt of silicate, metal oxide, etc. It is an inert material and is non-toxic and harmless. However, melamine-poor glass products may have problems with the dissolution of toxic substances from glass raw materials. Therefore, the glass products should be treated with water soaking or heat treatment with dilute acid. Food and medicine with strict requirements for packaging can be changed to soda-lime glass for borosilicate glass. At the same time, attention should be paid to the quality of glass smelting and forming to ensure the safety of the packaged food.
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