| 摘要 |
An envelope construction includes an outer envelope and a return envelope contained therein. The return envelope has a front sheet and a back sheet, both sheets being provided with marginal edges bonded together except along one edge. The front sheet extends beyond the back sheet at this one edge and has a closure flap provided with an adhesive strip for sealing the return envelope. First and second insert sheets, in the nature of a bill and a copy thereof, are arranged inside the outer envelope and are juxtaposed over the back sheet of the return envelope. One insert sheet includes an end strip provided with a release agent on its back side which overlies and protects the adhesive strip provided on the closure flap for the front sheet of the return envelope. |
