In 1951, 3M company in the United States developed thermal paper, after more than 20 years, because the problem of chromosomal technology has not been properly solved, the progress has been relatively slow. Since 1970, the miniaturization of thermal sensitive elements, the upgrading of fax machines and the development of new colorless dyes have been successful. Thermal paper has been used in icon recording, computer consumables and printer consumables.
In the following nearly half a century, with the development of market economy, the application of thermal paper has been gradually applied to the cashier system of supermarket hotels, the printing of delivery orders, express labels, milk tea labels and other fields.
So how is thermal paper produced?
Firstly, it is necessary to use the base paper with a relatively coarse particle size for the first precoating, forming the first precoating; After drying, the coating with relatively fine particle size is used for the second pre-coating, forming the second pre-coating; After drying again, the second pre-coating on the surface coating, the formation of surface coating, finally, the paper roll can be.
Post time: Jul-25-2022