| 摘要 |
A packaging item, such as a postal wallet or envelope, formed from stiff but foldable board material comprises first and second parallel and superimposed major rectangular panels 1, 2. The major panels are connected together, along at least two edges, by joined gussets. The gussets are formed from a first gusset part 5 extending from the respective edge of the first major panel 1, a first gusset join flap 7 extending from the first gusset part, a second gusset part 8 extending from the respective edge of the second major panel 2, and a second gusset join flap 10 extending from the second gusset part. The first and second gusset join flaps 7, 10 are attached together. Such gussets facilitate opening of the item by separating the major panels 1, 2. The joined gussets may extend inwardly from the at least two edges and at least one of the first and second join flaps can have a plurality of crease lines extending parallel to the respective edge of the major panel. A continuous gusset 3, 4 may connect the two major panels and may extend outwardly from said major panels. |
