The silk screen ink used in plastic spray painting is also known as silk screen ink. It is used to stretch silk fabrics, synthetic fiber textiles, or metal screen products onto a mesh frame belt, and then manually create a paint layer or photochemical reaction printing plate to make a metal screen printing plate.
This type of processing technology is widely used in the manufacturing industries of plastics, skincare products, small toys, household appliances, decorative building materials, gifts, food packaging, stationery, etc. The key characteristics of heat transfer printing technology are exquisite photos, which only require the use of general hot stamping machines and heat transfer equipment.
And the heat transfer printing process can be compressed and formed by the scraper during packaging printing, and then the printing ink can be transferred to the printing process material according to the mesh size of the text unit, thus producing a text and image similar to the paper draft. In addition, it also has the characteristics of high paint adhesion and strong bonding force.
Before silk screen printing, it is necessary to pay attention to these three points:
1. The cleaning of the silk screen processing packaging printing site should ensure that there is no dust in the air as much as possible for the packaging printing production workshop and printing plate making production workshop, otherwise it will harm the quality of packaging printing.
For production workshops with high precision requirements for packaging printing, it is necessary to install air filtration equipment when necessary to maintain the cleanliness of packaging printing and printing plate making production workshops.
2. The regulations on temperature and environmental humidity, as well as the temperature difference and humidity changes throughout the four seasons, pose a significant threat to the precision of packaging printing. This is especially true for multi-color printing, where the harm is even more pronounced. Therefore, it is required that indoor humidity and temperature be relatively stable, and the temperature and environmental humidity in the room be adjusted appropriately according to seasonal changes to ensure the precision of printing dimensions.
3. Mastering the characteristics of printing process materials. With the development of technology, there are various types of printing process raw materials with different appearances. Before packaging printing, appropriate printing inks, organic solvents, and their scrapers should be selected according to different regulations.