Selection Pearlescent Pigments Inks Precautions

Pearlescent printing is screen printing to printing and security printing in the packaging of the more popular new print available, it is mainly used pearl ink pearl luster pearl ink is ink when printed pattern to change the angle, the ink color will change, thereby identify the authenticity. Pearlescent printing printing process is consistent with the traditional printing process, the key lies in the preparation of special light ink, which generally consists of binders, thickeners, pearlescent pigments, solvents, additives and other components. In the deployment of pearl ink, pearlescent pigment passive light flash effect is that the light conditions in order to show its flash effect. To take full advantage of this feature pearlescent material flutter, in the selection of Pearlescent Pigments inks, pay attention to grasp the following three relationships: PVC lubricant
Extravagant piece pearl diameter size and material relationship between the flash effect used in packaging printing pearlescent pigments are flaky, usually slice Trail walking distance between the flash source is also large, the flash effect will be scattered; Conversely, tablets diameter is small, the flash source spacing is small, the flash effect on the concentration of
Diameter of the pearlescent pigment chip size and the relationship between the intensity of the flash pearl pigment sheet larger diameter, the surface of the light by the multiple reflection, refraction more chance, the stronger the intensity of the flash; the contrary, the weak intensity of the flash
Pearlescent pigment flakes diameter size and cohesion resistance and the compound of the suspension link between settling. Special light PVC plasticizer is usually smaller chip size, the easier cohesion, the aspect ratio of the smaller particles, resulting in the compound also prone to subsidence link, or easily in suspension.
In order to make the pigment compound evenly on the link #-O-, must master the three based on the relationship. The density of material according to the link select the appropriate size and aspect ratio sheet pearlescent pigment ink formulation, a thickening agent can also be added to prevent the deposition of pearlescent pigments; or pre-wetting the pearlescent pigment dispersed in the link and then compound , which also could have been avoided particles agglomerate agglomerate ills of settlement