Abstract
The vapor and gas permeabilities of the polyethylene films, casting polypropylene films and nylon films were tested in the paper. The keeping fresh performances were analyzed. It was found that the life time of vegetable packaged by films with high gas permeability is longer. The films with high vapor permeability reduce the accumulation of water droplets, but the leaves of vegetable change from green to yellow for lack of oxygen. It shows that the gas permeability of the film is more important than its vapor permeability for the vegetable storage. The family should choose the films with high gas permeability and appropriate vapor permeability to store vegetables.
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