UV Curing Machine

FAQs

• 1. How do I choose suitable UV lamps for my products?

  UV Mercury lamps: Emitting broad-spectrum ultraviolet light, UV mercury lamps are well-suited for curing transparent UV paints. Their intense and balanced UV output can penetrate the clear film, enabling uniform curing across the coating thickness. Thus, they're ideal for applications like clear coatings on wood furniture, doors, floors, glass, or transparent plastics.

  UV Gallium lamps: Gallium lamps are designed to emit a specific UV wavelength range, effective for curing colored UV paints. Colored paints' pigments absorb and scatter UV light, but gallium lamps' unique spectrum matches their curing needs. This ensures efficient curing while maintaining color integrity. They're popular in MDF furniture finishing and decorative coatings.

  UV Iron lamps: With their distinct UV emission, iron lamps are the top choice for dark-colored UV paints. Dark-colored paints have high-concentration pigments that impede UV penetration. Iron lamps' wavelengths can penetrate these thick pigment layers, activating photoinitiators in deeper coating layers for a uniform and durable cure. They're essential for black-painted products or dark-hued industrial coatings.

  LED lamps: LED light is a cold light source with no radiation, which provides higher energy output and saves around 90% power compared to traditional UV lights. It is suitable for materials that are prone to deformation at high temperatures, such as PVC and cardboard. In addition, for some special coatings, only LED lights can be used to achieve deep curing.

  In summary, the types of UV lamps depend on various base materials, coatings, and curing requirements. Generally, the mercury lamp is sufficient for transparent paint, while the gallium lamp works well for color paint. The iron lamp is ideal for dark paint. At times, these lamps work together to achieve the best coating effect.

• 2. What is the working principle of UV curing machines?

  The main principle behind the UV curing system hinges on the photochemical reaction.

  UV coatings contain photoinitiators. When exposed to ultraviolet light, the photoinitiators absorb UV energy. This absorption causes the photoinitiators to break down into highly reactive free radicals, which then initiate a polymerization reaction within the coating.

  During polymerization, the individual molecules in the coating, known as monomers and oligomers, begin to link together, forming long-chain polymers that gradually build up a three-dimensional network structure. As a result, the liquid coating rapidly transforms into a solid, hard film. This entire process occurs almost instantaneously, typically within 3-5 seconds.

• 3. Can I customize a UV curing machine with lower energy consumption?

  Sure. To reduce energy consumption, we offer options for electronic light sources and LED lamps. If you have any other special demands, please click CONTACT US for further discussion.