案例库 · 工程与运营 · 产品决策 · 1950s-1980s
这条还没译成中文，下面是英文原文。
The retort pouch made shelf-stable food light instead of a heavy can
A flexible laminate pouch is filled, sealed and pressure-sterilized, so food keeps without refrigeration and weighs far less than a can.
U.S. Army Natick · Reynolds Metals · Continental Flexible Packaging
那一手
Soldiers and explorers needed food that kept without refrigeration, but the tin can was heavy, hard to open and its long heat treatment overcooked the contents.
From the 1950s the U.S. Army Natick lab, with Reynolds Metals and Continental Flexible Packaging, developed a flexible retort pouch: a laminate filled and sealed, then sterilized under pressure.
Because the pouch is thin, heat penetrates quickly so the food keeps more of its fresh texture; because it is light and flat, a ration fits more food per kilogram and per truck.
NASA took the technology for space food, and the military built the modern meal-ready-to-eat on it.
为什么管用
- A thin package heats through in less time, so the food keeps more flavour and texture.
- It is lighter and flatter than a can, cutting freight weight and volume.
- Shelf-stable and unbreakable, it needs no cold chain or protective outer case.
- It opens easily and can be warmed in the pouch, so it suits ration kits and backpacks.
可以搬走什么
If you can make the container thinner and lighter, you improve the food and shrink the logistics in one move.
后来呢
Retort pouches became standard for MREs and grew into commercial packaged meals, soups and pet food, while the same flexible-sterilization idea spread to microwaveable pouches and cartons.
资料来源
- Pouch Defects Manual - Chapter 2, General
- Packaging Innovations: The History of Retort Cans and Pouches
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