Table of Contents
1. Ink Drying
- Accelerated Drying Process: In the printing process, after the ink is applied to the substrate (such as paper, plastic, or cardboard), it needs to dry quickly to prevent smudging and ensure a high-quality print. All three types of these heating lamps emit infrared radiation that can effectively heat the ink, causing the solvents in the ink to evaporate rapidly. For example, in a high-speed commercial printing press, using an infrared heat lamp can reduce the drying time of the ink from minutes (with natural drying) to just a few seconds, allowing for faster production runs and increased throughput.
- Enhanced Print Quality: The rapid drying achieved by these lamps helps to maintain the sharpness and clarity of the printed image or text. By quickly solidifying the ink, it reduces the risk of ink spreading or bleeding, resulting in a more precise and professional-looking print. This is especially crucial for applications such as label printing, where small text and detailed graphics need to be accurately reproduced.
2. Coating Curing
- Curing of Protective Coatings: In some printing applications, a protective coating may be applied over the printed area to enhance durability, gloss, or resistance to environmental factors. The infrared heat lamps can be used to cure these coatings. The heat penetrates the coating layer, promoting chemical reactions that cause the coating to harden and bond properly to the printed surface. For instance, in the production of printed packaging materials like boxes or bags, a cured coating can improve the appearance and longevity of the printed design.
- Improved Adhesion: The heating process also helps to improve the adhesion of the coating to the printed substrate. By warming the surface, the molecules become more active, allowing for better bonding between the coating and the underlying print. This is important for ensuring that the coating does not peel or flake off during handling or use.
