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    • 6. 发明申请
    • RING BINDER COVER
    • 戒指绑带
    • WO1993021021A1
    • 1993-10-28
    • PCT/US1993003786
    • 1993-04-21
    • AVERY DENNISON CORPORATIONPODOSEK, EdwardBELECKIS, Vytautas, Kazimeras
    • AVERY DENNISON CORPORATION
    • B42C07/00
    • B42F13/0006B42C7/002B42F13/002Y10S402/502
    • A ring binder cover (4) is composed of a pair of themoplastic sheets (20, 22) superimposed in edge-to-edge relation with a stiffener insert panel (23) disposed therebetween. The insert panel bears two parallel grooves (25, 27) which divide the insert into a spine zone (30) and two cover zones (24, 26). The material of the insert lying at the bottom of the grooves forms a pair of flexible strips (32, 34) which, combined with the adjacent portions of the cover sheets, form hinges between the spine and each cover. The peripheral edge portions (40) of the two thermoplastic sheets are sealed together and provide a sealed envelope for the stiffener insert which defines semi-rigid back and front cover panels of the binder, hingedly connected to a rigid spine. The insert can be provided with insert notches (370, 470, 570) at each end of each flexible strip to reduce outward protuberance of the peripheral edge at the hinge ends. At the mouth of each insert notch, the peripheral edge can carry straight across, or can follow inward toward the insert notch to form a seam notch, or can have a seam area which extends inward toward each insert notch. Another feature which can be incorporated into the ring binder concept of this invention is the idea of a curvable spine. The curvable spine idea involves providing one or more hinge-like spine grooves (641, 642, 643, 644) on the inside surface of the spine portion of the insert between the two hinge grooves. This allows the spine to flatten when the covers are open, but to curve about the longitudinal axis of the spine (concave on the inside and convex on the outside) when the covers are closed.
    • 环形活页夹盖(4)由一对与位于它们之间的加强件插入面板(23)以边缘对边缘重叠的一对塑料片(20,22)组成。 插入面板具有将插入件分成脊区域(30)和两个覆盖区域(24,26)的两个平行的凹槽(25,27)。 位于凹槽底部的插入物的材料形成一对柔性条(32,34),其与覆盖片的相邻部分组合形成脊柱和每个盖之间的铰链。 两个热塑性片材的周边边缘部分(40)被密封在一起,并为加强件插入件提供一个密封的外壳,其限定粘合剂的半刚性后盖板和前盖板,铰链连接到刚性脊柱。 插入件可以在每个柔性条的每个端部处设置有插入凹口(370,470,570),以减少铰链端处的周边边缘的向外突出。 在每个插入口的口部,周边边缘可以直线地穿过,或者可以向内插入插入槽口以形成缝隙,或者可以具有向每个插入槽口向内延伸的接缝区域。 可以结合到本发明的环形活页夹概念中的另一个特征是可调脊椎的想法。 可弯曲的脊椎思想包括在两个铰链槽之间的插入件的脊部的内表面上提供一个或多个铰链状脊柱槽(641,642,643,644)。 这样当盖子打开时,脊柱能够平坦化,而是当盖子关闭时绕着脊柱的纵向轴线(在内侧凹陷并在外部凸出)上弯曲。