| 摘要 |
PCT No. PCT/FI93/00334 Sec. 371 Date Apr. 17, 1995 Sec. 102(e) Date Apr. 17, 1995 PCT Filed Aug. 25, 1993 PCT Pub. No. WO94/05510 PCT Pub. Date Mar. 17, 1994A method for folding and glueing a sheet of paper that contains informations and serves both as a letter and an envelope, wherein the sheet (40) is folded transverse to its parallel lateral edges (41). The lateral edges (41), the end edge (45) of the last folded sheet portion (40a) and the transverse edge (46) are closed by glue joints, and the folded and glued lateral edges (41) and the transverse edge (46) are perforated. The travel direction of the sheet is changed by about 90 DEG after treatment of the lateral edges (41). To make the transverse glue joints tight, transverse glueing of the end edge (45) of the last folded sheet portion (40a) and the transverse edge (46) is performed just before perforation of these parts by opening slightly the sheet portions (40a, 40b, 40c) that are to be glued together and by spraying glue on the slots.
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