The environmentally-friendly carton printing material is made by using waste newspapers and waste paper products as raw materials, and is prepared by vacuum-adsorption molding on a special mold which is pulped and blended into a certain concentration of pulp (also directly using raw pulp such as wood pulp or mash). After drying and shaping to make inner packaging products of different kinds and uses, this article will introduce you to 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. The impact of plastic packaging printing materials on food safety mainly includes the resin itself, additives, etc., mainly manifested by the migration and dissolution of toxic and harmful chemical pollutants remaining inside the material, resulting in food contamination. The ink printed on plastic food packaging bags is due to benzene. Some toxic substances are not volatile and have a greater impact on food safety. Article source address: http:// Toilet Paper Holder,Hanging Corner Shower Caddy,Wall Hanging Shower Caddy,Wall Mounted Shower Caddy Jiangmen Sunbond Houseware Manufacturing CO.,LTD , https://www.jmsunbondhw.com