| 摘要 |
PURPOSE: To protect a food against decomposition by a condensate dripping thereon by setting the dimensions, interval and arrangement of grooved so that the condensate collected at a part facing downward and on the wall face of the groove moves upward and discharged to a drainage region during use. CONSTITUTION: A groove part 9 vacuum molded of plastic has a basic part 10 and a side wall 11 extending downward. Cross-sectional width A of the basic part 10 located above is set shorter than the distance B between adjacent end parts of the side wall 11. The distance B is set in the range of 1.6-2.8 mm, for example, so that condensate is held in the groove part 9 and does not drip downward gravitationally. The distance A is set in the range of 1.5-2.5 mm, for example, and the joint 12 between respective groove parts 9 is partially formed as a part 4 facing downward. According to the structure, the drop of condensate produced at the joint 12 is sucked to the groove part 9 by surface tension toward the basic part 10 located above. |
