| 摘要 |
PURPOSE: To overcome problematic limitations in temperature and in form on packing boxes while ensuring their excellent sealing performance. CONSTITUTION: The seal lining of a packing box 2 is composed of joints 17 having a circular or approximately circular cross section and having different diameters so that they alternately rest on a rod 9 and on the housing of the packing box 2 in which they are pressed. Excellent liquid tightness is obtained and the joints 17 are metallic which makes it possible to use the packing box 2 at high temperature. |
