| 摘要 |
PROBLEM TO BE SOLVED: To obtain a double postal card, which is legitimate to the Postal Act, the processing of which is easy and which can transmit a great stock of information. SOLUTION: The surface of a first leaf 1 and that of a second leaf 2 are pseudo-bonded together through a pseudo-bondable resin sheet G, while the surface of a third leaf 3 and that of the fourth leaf 4 are also pseudo-bonded together through the pseudo-bondable resin sheet G. After that, the former as a reply postal card and the latter as a postal card sent to get a reply are folded through a folding line 6 into a double-leafed hinged folding as a whole.
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