What materials are used in vacuum-sealed cooked corn bags, and what causes bag bulging?

Vacuum-sealed cooked corn bags typically require high-temperature sterilization resistance, high barrier properties, and puncture resistance. Common material structures include PET/PA/RCPP and PET/AL/PA/RCPP.

The main reasons for bag bulging are:

• Incomplete sterilization (high-temperature sterilization is generally carried out at 121℃–135℃).
• Damaged packaging or poor sealing quality.
  

真空包装袋一定要加PA吗？感觉真空包装类袋子几乎都有PA。软的产品应该不用PA那么强的保护性吧？还是有别的原因？

Betty 发表于 2026-4-30 23:58
真空包装袋一定要加PA吗？感觉真空包装类袋子几乎都有PA。软的产品应该不用PA那么强的保护性吧？还是有别的 ...

不一定，取决于要包装什么产品，