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The sanitary safety problem of ceramic printing materials used in food packaging mainly refers to the dissolution of heavy metal element lead or cadmium in the glaze layer of glazed ceramics, which is harmful to human health. When these containers are used to hold acidic foods (vinegar, juice) and wine, these substances are easily dissolved and migrated into foods, and even cause poisoning. This article will introduce you to the summary of screen printing knowledge.
After the design is completed, the graphic design will show the work by printing. Whether this process is going smoothly depends on whether the manuscript of the design meets the requirements of printing knowledge and can be printed perfectly. In practice, because the designer's printing practice is not enough, many times when the work is submitted to the printing house, the work is returned because it cannot meet the production requirements.
At this time, they always thought that the printing factory had a problem, and they did not doubt whether it was caused by their lack of printing knowledge. Because they don't know that different papers, different inks, and different printers make different prints. Undoubtedly, these are caused by the lack of printing practices and insufficient understanding of the printing process. It can be seen that it is very important to master certain printing knowledge and implement certain printing practices.
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 benzene solvents in foods to exceed the standard, and benzene solvents are more toxic. Infiltration into the skin or blood vessels can endanger the body's hematopoietic function, damage the body's nervous system, and even cause leukemia.
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