济南黑白印刷防伪添加剂的使用2013-10-10 16:37:29
济南黑白印刷紫外荧光防伪技术 在紫外光(200～400nm)照射下，能发出可见光(400～800nm)的特种油墨。按激发光源的波长不同，又可分为短波紫外线激发荧光防伪印刷油墨(激发波长254nm)和长波紫外线激光荧光防伪印刷油墨(激发波长为365nm)。根据油墨有无颜色分为有色荧光油墨和无色荧光油墨两种。其中常用的荧光材料按其组成分类主要有三种。
Ji'nan black and white printing UV fluorescent anti-counterfeiting technology in ultraviolet light (200 ~ 400nm) irradiation, can emit visible light (400 ~ 800nm) special ink. According to the wavelength of the excitation light source is different, can be divided into short wave ultraviolet excitation fluorescent anti-counterfeit printing ink (excitation wavelength 254nm) and long wave ultraviolet laser fluorescent anti-counterfeit printing ink (excitation wavelength 365nm). According to the innovative ink there is no color is divided into non-ferrous fluorescent ink and two kinds of colorless fluorescent ink. The fluorescent material commonly used according to their classification mainly has three kinds.
其一，有机荧光材料是具有大共轭体的不饱和分子，多是日光激发，用于色彩明显的装饰，荧光稳定性差，易氧化分解;其二，经高温合成的无机荧光材料，是用于荧光屏、日光灯管的发光材料，具有抗辐射好，稳定性高，但在油性介质中难以分散。合成难度高、耐水性差;其三，化学合成的稀土有机络合物作为荧光材料。常规的有机稀土荧光络合物具有制备简单，在油性介质中易分散、溶解、细化，在可见光下无色，紫外光激发下表现较强的荧光效果。
日光激发变色防伪技术：在太阳光下，能发出可见光(400～800nm)的防伪技术。这种防伪技术从表面上看是由于太阳作用而变色，实质上也是受紫外线照射而变色的。
First, organic fluorescent materials is conjugate unsaturated molecule, is more sunlight excitation, for obvious color decoration, fluorescence stability, oxidation and decomposition; second, after the high temperature synthesis of inorganic fluorescent material, is used for emitting material screen, fluorescent lamp, with anti radiation, high stability, but it is difficult to disperse in the oily medium. Synthesis of high difficulty, poor water resistance; third, chemistry of rare earth organic complexes synthesized as fluorescent materials. Organic rare-earth fluorescent complex routine has the preparation of simple, easy to disperse, in oil dissolved in a medium, refinement, colorless under visible light, ultraviolet light and fluorescence effect, strong performance.
Sunlight excitation color anti-counterfeiting technology: in the sun, can emit visible light (400 ~ 800nm) of anti-counterfeiting technology. The anti fake technology on the surface is due to the sun and color, but also by the ultraviolet radiation and discoloration of the.
济南黑白印刷热敏防伪技术：在加热作用下，能发生变色效果的防伪技术。根据变色所需温度的不同，可以分为手温型变色防伪技术和高温变色防伪技术。手温型变色防伪技术是指在34～36℃温度下，能发生变色效果。按照变色方式的差异，又可分为单变色可逆、多变色不可逆和多变色不可逆热敏防伪技术。现在我国已经开发出五种手温型单变色可逆防伪技术，变色方式有：玫瑰红变无色，紫红变无色，蓝色变无色，绿色变无色，橙红色变无色也可设计为有色变成各种其他颜色;三种高温单变色可逆防伪技术，变色方式有：粉红变蓝色、黄变红、红变黑等。热致变色物质可分为无机盐类、配位化合物、有机物(染料分子)和液晶高分子等。
