Heat treatment method for packaging product and heat-treated packaging product

[Abstract] A packaged product formed by packing a content such as food or drink, sanitary product or medical product in a packaging material including at least one layer of a hydrophilic resin, subjected to a heat treatment using hot water to perform, for example, Steam disinfection or retort sterilization. The hot water contains a water-soluble compound whose content greatly exceeds the level contained in tap water, whereby it is possible to suppress the creaming of the packaging material, which causes poor appearance or transparency and causes a decrease in gas barrier properties. This is a problem in the conventional cooking or rectifying hot water treatment.
[Sovereign Items] 1. A method for heat-treating a packaged product, comprising: providing a packaged product formed by packing the content in a packaging material containing at least one layer of a hydrophilic resin, and using hot water for the packaged product Heat treatment is performed in which hot water contains a water-soluble compound.

PS+PP Cream Jar

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