The "Retort Pouch," a Japanese discovery is an example of these remarkable materials. A foil compound, the pouch contains prepared foods that when heated in boiling water are ready to be served. The foil protects the hands from scalding, and the material will not infect the food.
這種被稱為「軟罐頭」的殺菌調理軟袋，由一種類似鋁箔的材料製成，可耐 135 ℃的高溫，傳熱性亦佳，放在滾水中燙煮幾分鐘，袋內食物即溫熱可食，而袋子卻一點也不燙手；同時不會產生重金屬汙染，攜帶亦十分輕便。