Sterilization pouches have sufficient strength and retention properties so as to keep the contents of the pouch sterile even in a single layer. Please consider the necessity of double packaging well in advance.
(1) When the inner sterilization pouch needs to be kept sterile
It is expected that the entire inner sterilization pouch will be supplied to sterilized zones in the hospital. Make the inner sterilization pouch one size smaller than the outer one, and heat seal it without folding or without any open parts.
(2) When the inner sterilization pouch does not need to be kept sterile
This is a case where the inner sterilization pouch is used as a protective material. The purpose is to prevent the sterilization pouch from being damaged by sharp devices or heavy objects, and the situation does not necessarily require the use of a sterilization pouch. To be precise, this is a state that is distinguished from double packaging, and even when sterilization pouches are used, there is no need to heat seal the opening, and there is no problem with folding.
In any case, there is the possibility that the penetration of a sterilizing agent into the items to be sterilized in the sterilization pouch could occur during sterilization. Please check the effects of sterilization conditions and the loading method on sterilization assurance beforehand and make appropriate settings.