| 摘要 |
PURPOSE: A method for producing a styrofoam ice box mold for wrapping foods for the high quality and long-time preservation is provided. CONSTITUTION: When water is filled up in a styrofoam box, and a cover is assembled, the water is overflowed, and it gets in a vacuum state. Herein, while the volume inflation pressure generated while the water is frozen is given to a vacuum-wrapped food, the volume inflation of the food is prevented, and the quality of the frozen food is improved. In addition, the styrofoam box is made up for the original freshness of the food and the frozen food of a high quality, having a characteristic that the vacuum-wrapped food is not flowed by an outer temperature.
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