Comparación de marcado UV DPSS de 355 nm y codificación de tinta
Nov 12 , 2022Comparación de marcado UV DPSS de 355 nm y codificación de tinta
Si no hay fecha de producción, vida útil y otra información en la bolsa de empaque de alimentos, ¿te animas a comprarlo? No solo eso, hoy en día, cuando los consumidores generalmente están muy preocupados por la seguridad de los alimentos, incluso la información ambigua en la bolsa de empaque puede hacer que las personas sientan fácilmente que puede haber trucos, y las personas no pueden evitar preguntar si es falso. ¿Tres sin productos? O producto caducado?
Cada vez más fabricantes se han dado cuenta de esto. Es una forma común para que los fabricantes marquen en las bolsas de empaque exterior de bocadillos, y también es una parte indispensable, como el logotipo, la fecha o el número de lote, etc. Además, para eliminar los problemas de fácil caída, borrosa desgaste en los métodos tradicionales de etiquetado y codificación, muchos fabricantes han recurrido a equipos de marcado láser.
muestra de marcado láser uv dpss
This is because laser marking directly acts on the local surface of the object through a high-energy density laser beam, causing the surface material to rapidly vaporize or change color, and then leave the required graphic marks, which are permanent and not easy to wear. And erasing, the whole marking process is very fast, and no consumables, maintenance is more convenient and fast. Another invisible benefit of laser marking is that it gives powerful anti-counterfeiting and information traceability functions by marking specific graphic information.
Food packaging bags are mostly made of film and polymer materials, which are very sensitive to heat. In order to avoid scorching that reduces the aesthetics and clarity of the mark, the "cold" processing characteristics of 355 nm UV DPSS are desirable. 355 nm UV DPSS photon energy is high, and the material has a high absorption peak at 355 nm, so the energy is fully utilized, and the molecular bonds of the material can be easily broken during marking, and the heat generated in the whole process is low. To be minimal, the pulse width of about 25ns is of great significance to the heat-affected zone. The narrow pulse width makes the heat conduction on the surface of the material to end before it is too late, and the specific performance is that the heat-affected zone is very small. In this way, there is no charring and clear lines when marking with 355 nm UV DPSS on video packaging bags.
355 nm UV DPSS also has the property of being easy to focus. Under the blessing of excellent beam quality (M2 < 1.2), the diameter of the focused spot can reach the order of microns. In this way, very fine and complex graphics can be carried out on the packaging bag. The marking output not only has high contrast and high resolution, but also has certain anti-counterfeiting and traceability functions, which is self-evident for food safety.
