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    Articles Including Panels and Molded Structures and Methods of Making Same
    4.
    发明申请
    Articles Including Panels and Molded Structures and Methods of Making Same 有权

    公开(公告)号：US20220242018A1

    公开(公告)日：2022-08-04

    申请号：US17629531

    申请日：2020-09-16

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Jason D. McNulty ,  Dino Perin ,  James M. Jonza

    IPC: B29C45/14 ,  B32B5/20 ,  B32B3/12 ,  G10K11/168

    Abstract: A method of making an article is provided, including placing at least a portion of a panel in an injection molding die and overmolding at least one molded structure on a surface of the panel in the injection molding die, wherein the molded structure includes a foam composition. An article is also provided including a material-to-material connection between the surface of a panel and a molded structure. The panel includes first and second layers and a core disposed there between, wherein the core has a plurality of walls providing a series of connected cells. Some of the cell walls have openings providing fluid communication between a series of at least 3 cells, and the opening in a cell wall has an area that is at least 50 percent of the area of a side of that cell wall. Articles such as panels, walls, or other parts with curved surfaces can be formed according to certain exemplary embodiments. The articles are useful for absorbing sound in a designed frequency range.

    VACUUM MOLDING ROLL SLEEVE AND METHODS OF MAKING AND USING THE SAME
    9.
    发明公开
    VACUUM MOLDING ROLL SLEEVE AND METHODS OF MAKING AND USING THE SAME 审中-公开

    公开(公告)号：US20240300163A1

    公开(公告)日：2024-09-12

    申请号：US18569783

    申请日：2022-06-07

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Christopher R. Kokaisel ,  Joseph C. Dingeldein ,  Timothy J. Anderson ,  Graham M. Clarke ,  Elizaveta Y. Plotnikov ,  Christopher Kelton ,  James M. Jonza ,  Audrey A. Sherman

    IPC: B29C51/36 ,  B29C51/22

    CPC classification number: B29C51/36 ,  B29C51/225

    Abstract: A vacuum molding roll sleeve (100, 700, 800)comprises a body (119, 818, 819) comprising a mold wall portion (120, 820) disposed between a molding surface (110, 1210, 710, 810) and at least one vacuum surface (130, 830). The molding surface (110, 1210, 710, 810) has shaped depressed features and has first openings (112, 812) disposed therein at first predetermined positions (134). Each first opening (112, 812) is spaced apart from the at least one vacuum surface (130, 830) by a respective minimum thickness (135, 835). The at least one vacuum surface (130, 830) has second openings (132, 832) disposed therein at second predetermined positions (134). The first openings (112, 812) are fluidly connected to the second openings (132, 832) by conduits (140, 840) wherein, on a respective basis, at least some of the conduits (140, 840) are longer than the minimum thickness (135, 835) between the first openings (112, 812) and the vacuum surface (130, 830). The vacuum molding roll sleeve (100, 700, 800) is configured such that at least partial vacuum can be applied to the first openings (112, 812) through the conduits (140, 840) fluidly connected thereto. The vacuum molding roll sleeve (100, 700, 800) is mountable on a backup roll (737). Methods of making and using the vacuum molding sleeve are also disclosed.

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