Fluorescent aggregates of poly(cyclohexylene dimethylene terephthalate), method for obtaining same, and use thereof as a physically unclonable label for identifying and/or tracing packaging for cosmetic and/or perfume products

The present invention relates to spherical aggregates of semi-crystalline thermoplastic polyester, poly(cyclohexylene dimethylene terephthalate), with a size distribution of between 160 nm and 200 nm which fluorescence in the visible spectrum and are deposited on a thermoplastic aromatic polyester substrate or a thermoplastic polyolefin The present invention further relates to the process for obtaining said aggregates and to the use of said aggregates as a physically unclonable label, for identifying and/or tracing packaging for cosmetic products and/or perfumes. Therefore, the present invention could fall within the field of anti-counterfeit packaging, particularly in the area of anti-counterfeit packaging for cosmetic and/or perfume products.