| 摘要 |
PURPOSE:To secure a bag body from bursting even when a big force acts on it. CONSTITUTION:Ring parts 8 are formed at the eight corners of a square, vessel- shaped bag body 7. By means of these ring parts 8 the bag body 7 is fastened to the inside of a dry container. The ring parts 8 are made according to the following procedure. Each corner of a bag body 7 is gathered to form a straplike part 16. The straplike part 16 is folded in two and tied fast in a first tightener 17. Finally, the tip of the straplike part 16 is tuned back forward outside the first tightener 17 and tied fast in a second tightener 18. |
