Polyethylene Terephthalate (PET) Film  

  PET film (often referred to as polyester film) is a high-performance film,

divided into Biaxially Oriented PET (BOPET) and non-oriented PET.

Among them, BOPET is a high-end choice for flexible packaging printing

due to its high strength and good stability.  

- Advantages:    - Excellent mechanical properties, resistant to stretching, tearing, and puncturing,

   making it suitable for high-speed printing and complex processing;    - High transparency and strong gloss, with high color reproduction after printing,

   ideal for packaging requiring high visual texture;    - Good temperature resistance (can withstand above 150°C),

   suitable for high-temperature sterilization or retort packaging (e.g., high-temperature sterilized food bags);    - Superior barrier properties compared to PE and PP (stronger resistance to oxygen and moisture),

   along with good chemical resistance, not easily eroded by oils and solvents.

 - Disadvantages:    - Higher cost than PE and PP, not suitable for low-priced products;    - Poor heat-sealing performance, unable to be directly heat-sealed,

   requiring lamination with heat-sealing layers such as PE or CPP;    - Toughness slightly decreases at low temperatures, but still better than PP.  

- Applicable Scenarios:   1) High-end food packaging (e.g., nuts, dried meat), cosmetic bags, pharmaceutical packaging

  (e.g., composite layer of aluminum-plastic blisters)；

2)and temperature-resistant packaging (e.g., instant noodle seasoning bags).