| 摘要 |
<p>A blank for making a re-usable envelope comprises first and second rectangular panels (10, 12) for folding one upon the other to form front and rear panels respectively of the envelope, and a third panel (16) joined to one edge (18) of the rear panel (12) for folding between the front and rear panels to divide the interior of the envelope into front and rear pockets. The front panel (10) has a window (22) for exposing a pre-printed return address borne by the third panel (16). Three flaps (24, 26, 28) are provided on the other three edges (30, 32, 34) of the front panel (10) for sealing the envelope for a first use, the flap (28) having a tear-off strip (36) dividing it into a first strip (42) joined to the edge (34) of the front panel (10) and a second strip (44) on the opposite side of the tear-off strip to the edge (34). The envelope may be closed for a first use by folding over the flaps (24, 26, 28) and securing them to the rear panel (12), with only the second strip (44) of the flap (28) being secured to the rear panel so that the envelope may be opened by detaching the tear-off strip (36). The envelope may then be closed for a second use by securing the first strip (42) of the flap (28) to the rear panel (12).</p> |
