There are some differences in the application scenarios and material matching between polyvinylpyrrolidone and co polyvinylpyrrolidone as adhesives. Polyvinone is suitable for situations where mechanical requirements are high and water resistance is not required, such as sheet metal processing, furniture manufacturing, packaging and printing industries. Covidone is suitable for situations with high requirements for water and humid environments, such as medical tape, food bags, surgical sutures, etc.