Transparent multilayer polymer films for hidden marking of reflective containers

Area of Science:

• Materials Science
• Optics
• Polymer Science

Background:

• Counterfeit production poses significant socio-economic challenges.
• Effective countermeasures are needed for product authentication and security.
• Polymer packaging offers potential for integrated anti-counterfeiting measures.

Purpose of the Study:

• To investigate the use of anisotropic transparent shrink films for hidden product marking.
• To explore the optical properties of these films under polarized light for labeling.
• To develop a robust method for product authentication using embedded hidden barcodes.

Main Methods:

• Utilizing polarized light reflection from mirror-like containers wrapped in anisotropic shrink films.
• Observing and analyzing the generated multicolor optical effects.
• Embedding and reading hidden barcodes within internal film layers using polarized light.

Main Results:

• Anisotropic films generate vivid multicolor effects upon reflection of polarized light.
• The observed optical features show a dependence of color and transparency on film scale.
• Hidden barcodes embedded within film layers are successfully read using polarized light.

Conclusions:

• Anisotropic transparent shrink films provide a viable platform for both overt and covert product labeling.
• The optical properties and hidden barcode capabilities offer a robust solution for product authentication.
• This technology presents an effective countermeasure against counterfeit production.