0010010 nbsp; 0010010 nbsp; 0010010 nbsp; With the strengthening of people ’s awareness of environmental protection, people have paid more and more attention to the impact of environmental changes in activities such as production operations and life consumption. In the field of printing, the importance of environmental protection is no exception, and many requirements and restrictions on hygiene, environmental protection, labor protection, etc. have been added to the printing industry. Especially for food packaging, printing requirements are stricter. At present, the coating and glazing process has been used by more and more printing factories, promptingWater-based varnishThe demand for has continued to rise.
0010010 nbsp; 0010010 nbsp; 0010010 nbsp; The solvent of water-based varnish is mainly water, the volatility is basically zero, and the leveling performance is relatively good. However, water as a solvent for aqueous glazing also has shortcomings. For example, the drying speed is slow, which is easy to cause process failures such as product size instability. Therefore, ethanol is appropriately added during use to enhance the drying performance of aqueous solvents and improve aqueous glazing Processability of oil.
0010010 nbsp; 0010010 nbsp; 0010010 nbsp; According to the use of the product, water-based glazing oil is mainly divided into three types: high gloss, ordinary gloss and matt gloss.
0010010 nbsp; 0010010 nbsp; 0010010 nbsp; from the processing technology can be divided into: ink fountain glazing process, water bucket glazing process (using ordinary offset press water, ink fountain) Special polishing machine polishing process, online polishing process.
0010010 nbsp; 0010010 nbsp; 0010010 nbsp; water-based varnish can reduce the harm to human body and the pollution to the environment during operation, and has been increasingly used by food and tobacco Valued by printing companies.