A Study on the Perforation Line Model of PET Shrink Labels

The researchers found through comparative analysis of domestic PET shrink label perforation lines that the existing perforation lines differed in structure, hole shape, width, height, size, and spacing depending on the manufacturer and brand. As a result, it was inferred that the perforation lines of PET shrink labels may be related to the inconvenience that consumers feel when removing labels. Therefore, this study proposes a perforation line structure model that can solve the inconvenience of label removal that consumers experience during the separate collection of clear PET bottles. To this end, the researchers designed a diagonal perforation line model and conducted first and second cutting experiments. The results of the first experiment showed significant results with an average satisfaction rate of 87%. In the second experiment, it was confirmed through experimentation that the degree of cutting of PET shrink labels differs depending on the perforation line structure. As a result, it is noteworthy and significant that it was confirmed that diagonal perforation lines have utility as cutting lines due to their low heat resistance.