| 摘要 |
PCT No. PCT/GB89/00961 Sec. 371 Date Feb. 7, 1991 Sec. 102(e) Date Feb. 7, 1991 PCT Filed Aug. 18, 1989 PCT Pub. No. WO90/02051 PCT Pub. Date Mar. 8, 1990.A ring binder (1) comprises a sheet of polypropylene material divided by score line (2, 3) into front and rear panels (4, 6) joined by a spine (5). The binder includes a pair of binder strips (7), each of which has a partly circular head (8). The strips (7) and heads (8) are cut from the sheet material so that the strips (7) extend from the spine (5) at a position adjacent the score line (3). The strips (7) are associated with apertures (11) formed in spine (5). The heads (8) can pass through apertures (11) without deformation.
|
