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2204-2020
Development of plastic packaging
In 1936, the plastic film thermoforming method became the heat shrink packaging technology of meat food. Later, the vacuum technology was combined to extend the shelf life of meat food. The advancement of plastic molding technology, with its cost advantage, is not fragile Such characteristics have gradually replaced many glass bottle packaging. In addition, the original metal squeezable hose has also been gradually replaced by plastic beverage cans.
