| 摘要 |
The bag has a tubular casing wall (1) which is bonded between the bases (2,3) by short and long side edges (7,6). The narrow bottom flaps (9) and broad bottom flaps (10) are bonded in the bases. A bottom cover sheet (11) with the same length and width of the bases, is affixed on the bases. The broad bottom flaps are provided with a tear line (17) parallel to the long side edges. A bottom reinforcing strip (15) on the underside of the broad bottom flaps is placed between the tear lines, such that actuating end (16) is protruded from the bottom cover sheet. |
