As you know, The high temperature resistant bags was high used for ready eat food packing, Do you have faced the issues that your bags burst after cooking?

High-temperature cooking bag is a high-end product in flexible packaging, why say that, there are two factors, one is the high profit, the profit of each bag is higher than ordinary bags: the other is that the retort bags with highly risks, because of the discoloration, peel strength reduction, burst bags and other problems caused by a lot of light leads to the return of downstream manufacturers lost orders, The mainly reason is it is hard to control the technology of procution for the retort bags.

Conclusion:

(1) high-temperature cooking bags of steaming burst bag problem is actually the bag of thermal burst strength, generally due to damage at the heat seal and caused.

(2) If you add an external pressure to the cooking bag in advance, and always maintain this relative external pressure during the heating process, there should be no burst bag, but the pot requires high pressure, such as 135 ℃, requires normal working pressure from 2 ．2kg up to 3.2kg. 2kg. Thus, it seems that the burst bag with the test method, but also with the production method, improve the high-temperature sterilization process to reduce the burst bag has important significance. In this paper, we hope to help further improve for the food packaging

Then is there any way to prevent the burst and zipper fall off when heating the bags? Definately yes. We provided the zipper retort bags could withstand 121℃ for 40 minutes. Contact us to customized your food pouches now.