| 摘要 |
<p>PURPOSE:To make a box out of one sheet of paper and ensure thermal insulation performance. CONSTITUTION:A box has fold-back plates 22 and 23 connected with the upper ends of erect plates 18 and 19, respectively, by being bent from them; and inner cover plates 24 and 25 connected with the ends of the fold-back plates 22 and 23, respectively, by being bent from them horizontally. The inner cover plates 24 and 25 extend so as to be superimposed one on top of the other. A thermal insulating inner bag 3 is stuck to the inside of the box set up.</p> |
