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    SHEET MATERIAL
    2.
    发明公开
    SHEET MATERIAL 审中-公开
    板材

    公开(公告)号：EP1084026A1

    公开(公告)日：2001-03-21

    申请号：EP99925161.4

    申请日：1999-05-27

    申请人： Korpak Limited

    发明人： MACKINNON, Robin ,  WILLIS, Ian

    IPC分类号： B29D24/00 ,  B32B3/26 ,  B29C47/20

    CPC分类号： B32B3/26 ,  B29D24/004 ,  B29L2031/712 ,  B32B27/08 ,  B32B27/32 ,  B32B2553/00 ,  B65D1/22 ,  B65D65/406

    摘要： A plastics sheet material comprises a pair of opposed faces (12, 14) between which run a series of elongate voids (20), the voids (20) being arranged so that there are two series of uninterrupted interconnections (14, 18) between the two opposite faces (12, 14) characterised in that the interconnections (14, 18) of each series meet at or near the respective faces. The voids (20) will in practice be parallel to one another and run the length of the sheet material, thus the material can be produced in one pass by extrusion from a die. This means that the material can be produced potentially much cheaper than, for example, an equivalent laminated product. Furthermore, being produced in one piece, the structural integrity is greater and the variety of configurations which may be employed is very high. The opposed faces may both be external faces, or one or more may be an internal face if the sheet is of a more involved cross-sectional profile. The sheet (10) of the invention allows individual sections to be made thicker for a given gross sheet thickness and weight per unit area. The number of intersections (22) in sheet of the invention can be reduced which also reduces the weight per unit area significantly while the sheet (10) as a whole and the individual sections maintain their resistance to buckling. In the preferred form of the invention, the interconnections (16, 18) meet at the surface of the opposed faces.

    摘要翻译： 塑料片材料包括一对相对的面（12,14），它们之间延伸有一系列细长空隙（20），空隙（20）被布置成使得在所述空隙（20）之间存在两个不间断的互连（14,18） 两个相对的面（12,14），其特征在于，每个系列的互连（14,18）在相应面处或附近相遇。 实际上，空隙（20）将彼此平行并且延伸片材的长度，因此材料可以通过从模头挤出而一次生产。 这意味着该材料的生产潜力可能比例如等同的层压产品便宜得多。 此外，整体制造，结构完整性更大，可以采用的各种配置非常高。 如果片材具有更多涉及的横截面轮廓，则相对面可以都是外表面，或者一个或多个可以是内表面。 本发明的片材（10）允许对于给定的总片材厚度和每单位面积重量制造单独的部分更厚。 本发明片材中的交叉点（22）的数量可以减少，同时片材（10）整体和各个部分保持其抗弯曲性，同时显着降低每单位面积的重量。 在本发明的优选形式中，互连（16,18）在相对面的表面相遇。