| 摘要 |
PCT No. PCT/JP91/01781 Sec. 371 Date Jul. 17, 1992 Sec. 102(e) Date Jul. 17, 1992 PCT Filed Dec. 27, 1991 PCT Pub. No. WO92/12309 PCT Pub. Date Jul. 23, 1992.A sheet stretcher (7) comprises a base (7a), which has a hole (17) for slidably receiving an expanded portion (5) formed at an edge of a sheet (2), a slit (18) communicating with the hole (17) and through which the end portion (11) of the sheet (2) continuous to its expanded portion (5) is insertable, a hole (19) for slidably receiving a further expanded portion (5) formed at an edge of a further sheet (2), a slit (20) communicating with the hole (19) through which the end portion (11) of the further sheet (2) continuous to the further expanded portion (5) is insertable.
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