| 摘要 |
This application introduces a paper sack with a sheath consisting of at least two paper layers, at least one of the ends of the sheath closed to form a rectangular plane bottom which bottom may have a filling valve on one gable. At the area of the gable side, at least two of the layers of the sheath are adhered together with a line of adhesive (5) or, if there is a filling valve on one gable of the bottom, at least two sheath layers are adhered together with a line of adhesive at the area of the point of contact of the edge side and the diagonal crease. |
