Abstract
Recently, a new container for liquid of food products, which consists of a case made of a sheet of plastic or paper and a liquid-packing bag with a pouring lip made of a plastic film has been developed. The improvement of the resistance of the new container to drop impact is desired because the resistance is not adequately. To improve the resistance, it is important to investigate the pressure in liquid-packaging bags. In this study, the pressure in liquid-filled plastic film bags with a pouring lip and a heat-sealed area to reinforce the lip subjected to drop impact is measured using a pressure sensor. Results indicated that the heat-sealed area strongly affects the pressure in the bags.
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