Q. What is the difference between Bopp and PET film?

Answer

In general PET has a modest moisture barrier but a good oxygen barrier. It is often stiffer than BOPP and has better optical properties. It resists oil and acidic product ingredients better than BOPP which tends to absorb them and get distorted in the process. BOPP films offer a high level of transparency and gloss giving them a professional appearance. BOPP film is more effective at preventing moisture penetration than PET is. It is frequently chosen by converters and end users as the print web the inner barrier web or the sealant web in a handbag or pouches laminating or the HFFS wrapper for salty snacks baked products crackers cookies and other similar items.