| 摘要 |
<p>A container constructed from a pouch having a front (2), rear (1)and bottom sheet (3), the bottom sheet (3) of the pouch being folded along a midline thereof with flaps extending downwards from the fold line and each of the two bottom edges (4) of the flaps being welded to or integral with one bottom edge of either the front (2) or the rear sheet (1), lateral edges (8) of the front (2) and rear sheet (1) being welded to one another with the two bottom portions of the welded edges sandwiching both lateral edges (8) of the bottom folded sheet (3); for construction of the container, a central portion of the bottom sheet (3) is unfolded such that the unfolded portion has an essentially rectangular shape thus forming said base, with central parts of the bottom edges (5) of the bottom sheet (3) forming the front and rear edges of the base and with peripheral portions of the bottom sheet (3) forming two overlapping triangular portions (19) with the bottom edges thereof defining the two side edges of the rectangular base, thereby forming the container's front and rear wall sections extending from said front and rear edges and side walls extending from said side edges with the welded edges of the two sheets (1, 2) being at about the midline of the side walls; the structure being fixed by welding the two overlapping triangular portions (19) to one another or by welding a peripheral triangular portion (19) of the two overlapping ones to a juxtaposed inner face of the side sheets.</p> |
