| 摘要 |
<p>PURPOSE: To eliminate a protrusion of synthetic plastic or paper at a sealed joint part by a method wherein a sealing joint inside a pack container is covered by synthetic plastic bead. CONSTITUTION: Outer surfaces 22, 23 of walls 16, 3 having a sealing joint 6 are of smooth structure. Surfaces of two wall panels 14, 16 connected to each other by the sealing joint 6 are set to have the same plane at their sectional surfaces. They are firmly abutted each other through a clearance 24 extending along at least one end surface of one edge of one portion of the wall panel 14. The sealing joint 6 inside the pack container is covered by a synthetic plastic bead 21. With such an arrangement as above, it is possible to attain a pack container having a smooth surface and concurrently fluid-tight state.</p> |
