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The principle of invisible anti-counterfeiting of plastic bottles is like this

Carrie Mar 04,2019 Share this post:

Among the plastic bottle anti-counterfeiting technologies, one uses a "discoloration" pigment. These additives contain a multi-layered polymeric light-reflective coating that is applied around a reflective aluminum chip to allow the color of the plastic to change with viewing angles. The change in color, such as from red to green, is due to the interference of light waves reflected from different pigment layers. The color-changing pigments give the plastic bottles a remarkable aesthetic effect, and because these effects are not easily cloned, they also have an anti-counterfeiting function.

invisible anti-counterfeiting of plastic bottles

Color-changing pigments can be mixed into a variety of resins, such as pc, pp, hdpe, pet, abs, thermoplastic pu, cellulose acetate, and pa12. The weight ratio of the color-changing pigment to the resin is usually between 0.2% and 0.4%, and can be processed by standard processes such as injection molding, extrusion blow molding, thermoforming, calendering, extrusion film, and in-mold decoration. 

vaccine package

Particle labels are those that contain a specific resolution function or a polymeric particle containing a specific chemical composition that can be pre-mixed with the thermoplastic prior to molding. The labeled particles are often pre-mixed with the plastic powder so that they can be used for molding or concentrated, and can be molded by dilution during processing.The color strip micro-marking on plastic parts for injection molding, extrusion molding or rotational molding can be clearly discerned by scanning with a microscope or a pattern reader.

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