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    NOVEL MACHINING TECHNIQUES FOR RETROREFLECTIVE CUBE CORNER ARTICLE AND METHOD OF MANUFACTURE
    1.
    发明申请
    NOVEL MACHINING TECHNIQUES FOR RETROREFLECTIVE CUBE CORNER ARTICLE AND METHOD OF MANUFACTURE 审中-公开
    逆向选择性角钢条的新型加工技术及其制造方法

    公开(公告)号：WO9511470A2

    公开(公告)日：1995-04-27

    申请号：PCT/US9412016

    申请日：1994-10-20

    Applicant: MINNESOTA MINING & MFG

    Inventor： BENSON GERALD M ,  SMITH KENNETH L

    IPC: B23B3/30 ,  B23D1/20 ,  G02B5/124

    CPC classification number: G02B5/124 ,  Y10T428/2457

    Abstract: A method of machining a substrate to produce a cube corner element optical array (12). The method includes steps of directly machining a plurality of groove sets (14, 16, 20) into a directly machinable substrate to form an array having a plurality of geometric structures including cube corner elements (24, 26, 30), and machining at least two of the groove sets along the same path in the substrate but at different depths of groove to produce a geometric structure side surface having both an optical portion and a non-optical portion.

    Abstract translation: 一种加工基板以产生立体角元件光学阵列（12）的方法。 该方法包括以下步骤：将多个凹槽组（14,16,20）直接加工成可直接加工的衬底，以形成具有多个几何结构（包括立体角元件（24,26,30））的阵列，并至少加工 两个凹槽组沿衬底中相同的路径设置，但在凹槽的不同深度处，以产生具有光学部分和非光学部分两者的几何结构侧表面。

    DIRECTLY MACHINED RAISED STRUCTURE RETROREFLECTIVE CUBE CORNER ARTICLE AND METHOD OF MANUFACTURE
    2.
    发明申请
    DIRECTLY MACHINED RAISED STRUCTURE RETROREFLECTIVE CUBE CORNER ARTICLE AND METHOD OF MANUFACTURE 审中-公开
    直接加工结构的回归反射镜角及其制造方法

    公开(公告)号：WO9511469A3

    公开(公告)日：1995-09-08

    申请号：PCT/US9411946

    申请日：1994-10-20

    Applicant: MINNESOTA MINING & MFG

    Inventor： BENSON GERALD M ,  SMITH KENNETH L ,  KELLIHER JOHN C ,  GARDINER MARK E

    IPC: B29C65/08 ,  B32B3/30 ,  G02B5/124

    CPC classification number: G02B5/124

    Abstract: A cube corner article and method of manufacturing the article from a series of directly machinable unitary substrates (140). The method of manufacture comprises the first step of providing an initial unitary directly machinable substrate of material suitable for forming retroreflective surfaces. Then, a first cube corner element array zone (142) is formed having a plurality of geometric structures including cube corner elements. The zone is created by directly machining at least two sets of parallel grooves in the substrate. A replica of the cube corner element array zone is formed as an additional unitary substrate suitable for forming retroreflective surfaces. Portions of the replica substrate material are removed. The removal of these portions forms at least two intersecting cavities bounded by side walls in the replica at a depth at least that of the cube corner elements formed by the groove sets. Each cavity comprises at least one side wall which extends to a depth into the replica substantially equal to the deepest depth of any other intersecting cavity.

    ASYMETRIC CUBE CORNER ARTICLE AND METHOD OF MANUFACTURE
    5.
    发明申请
    ASYMETRIC CUBE CORNER ARTICLE AND METHOD OF MANUFACTURE 审中-公开

    公开(公告)号：WO9511465A3

    公开(公告)日：1995-05-11

    申请号：PCT/US9411942

    申请日：1994-10-20

    Applicant: MINNESOTA MINING & MFG

    Inventor： BENSON GERALD M ,  SMITH KENNETH L

    IPC: B32B3/30 ,  G02B5/124

    CPC classification number: G02B5/124 ,  Y10T29/49996 ,  Y10T409/303752

    Abstract: A method is disclosed for manufacturing a cube corner article (191) comprising the steps of providing a machinable substrate material suitable for forming reflective surfaces, and creating a plurality of geometric structures including cube corner elements (198-203) in the substrate. The step of creating the cube corner elements (198-204) comprises directly machining at least three sets of parallel grooves (197, 196, 195) in the substrate so that only one side of at least one groove in at least one groove set forms cube corner elementoptical surfaces.

    Method of manufacturing a plurality of laminae for use in a mold for forming retroreflective cube corner articles, mold and articles formed therewith
    10.
    发明专利
    Method of manufacturing a plurality of laminae for use in a mold for forming retroreflective cube corner articles, mold and articles formed therewith 未知

    公开(公告)号：AU724030B2

    公开(公告)日：2000-09-07

    申请号：AU5692098

    申请日：1997-12-09

    Applicant: MINNESOTA MINING & MFG

    Inventor： BENSON GERALD M ,  KELLIHER JOHN C ,  SMITH KENNETH L

    IPC: G02B5/124 ,  B29C33/36 ,  B29D11/00 ,  B29C33/38

    Abstract: A method is disclosed for manufacturing a plurality of laminae for use in a mold suitable for use in forming retroreflective cube corner articles. Each lamina has opposing first and second major surfaces defining therebetween a first reference plane. Each lamina further includes a working surface connecting the first and second major surfaces. The working surface defines a second reference plane substantially parallel to the working surface and perpendicular to the first reference plane and a third reference plane perpendicular to the first reference plane and the second reference plane. The method includes orienting a plurality of laminae to have their respective first reference planes parallel to each other and disposed at a first angle relative to a fixed reference axis. At least two groove sets are formed in the working surface. Each groove set includes at least two parallel adjacent V-shaped grooves in the working surface of the laminae. The at least two groove sets form first, second and third groove surfaces that intersect substantially orthogonally to form a plurality of cube corner elements. Each of the plurality of cube corner elements is preferably located on essentially one of the plurality of lamina. The plurality of laminae can be oriented at a second angle relative to the fixed reference axis prior to forming at least one of the groove sets. A mold according to the present invention and a retroreflective article made therefrom are also disclosed.

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