Thermal paper is a common printing paper, its surface is coated with a layer of heat-sensitive chemicals. When subjected to heat energy, the thermal paper produces visible images or text in the printer. However, some may be curious whether thermal paper can be coated to improve its protective performance and durability. This blog post explores this issue.
The working principle of thermal paper is based on the properties of heat-sensitive chemicals. When the print head applies thermal energy, the thermal coating on the paper changes in color to create an image. However, this thermosensitive coating is very sensitive, and the coating may have irreversible effects on it.
Coadding usually used plastic film, such as polyester film or polyethylene film. Such films usually need to be combined with the paper surface by hot or cold pressing. However, due to the working principle of the thermal paper, the high temperature used during the thermal pressure coating process may cause the discoloration of the thermal coating when not needed, thus damaging the quality of the image. In addition, the pressure applied during the coating can also damage the thermal coating on the paper.
Therefore, it is generally not recommended to film the thermal paper. If you need to increase the protection performance and durability of the paper, consider the following alternatives:
An alternative to use thermal paper:
If you need printed paper with better durability, choose to use hot transfer paper or regular paper and print with a traditional ink or hot transfer printer.
Use protective covers or folders:
Place thermal paper into a transparent plastic envelope or folder can effectively protect the paper from water, dust and scraping.
Control environmental conditions:
the thermal paper stored in a dry, light and temperature suitable environment, can prolong its service life.
It is most important to remember that thermal paper is designed for disposable use and is usually used to print temporary or short-term documents, such as receipts, bills or temporary labels, etc. If you need to save or protect important documents for a long time, it is recommended to use other printing paper and protection methods.
All in all, coating of thermal paper is not a recommended practice. Due to the sensitivity of the thermal coating and the possible damage caused during the coating process, it is best to choose other methods to protect the paper and documents. If you have concerns about the durability of the document, it is recommended to use durable printed paper or take other protective measures to ensure the quality and reliability of the document.
Keep in mind that when handling any document or paper, it is important to understand its characteristics and appropriate protection methods to ensure its long-term preservation and use effect