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    Unwinding of materials
    41.
    发明授权
    Unwinding of materials 有权

    公开(公告)号：US11358828B2

    公开(公告)日：2022-06-14

    申请号：US16756074

    申请日：2018-10-18

    Applicant: HEXCEL COMPOSITES LIMITED ,  HEXCEL CORPORATION

    Inventor： John Ellis ,  Anthony Loccisano

    IPC: B65H49/20

    Abstract: There is provide a process for unwinding material from a spool (2) wherein the angle (Θ) of take off at the first contact point (4) for the unwind is always in the range 0±20°, and wherein the first contact point (4) for the unwind is no more than 600 mm from the axis (3) of rotation of the spool (2). There is also provided an apparatus for the unwinding of material from a spool (2) comprising an axis (3) upon which a spool (2) may be rotatably mounted and a static first contact point (4) for the unwound material positioned no more than 600 mm from the centre of the axis (3), wherein the angle (Θ) of take off at the first contact point (4) for the unwind is always in the range 0±20°.

    High temperature composite honeycomb
    43.
    发明授权
    High temperature composite honeycomb 有权

    公开(公告)号：US10947354B2

    公开(公告)日：2021-03-16

    申请号：US16518528

    申请日：2019-07-22

    Applicant: Hexcel Corporation

    Inventor： Robert Charles Loesch ,  Merid Minasse Haile ,  Earl Frederick Ayle ,  Clark Russell Smith

    IPC: C08J5/24 ,  C08J5/04 ,  B32B27/38

    Abstract: Composite honeycomb that may be contoured to form composite honeycomb structures, which have tight radii of curvatures and/or compound curvatures, and which are suitable for use in high temperature environments. The method for making the composite honeycomb involves using high temperature prepreg to make a flexible composite honeycomb that is formed into a composite honeycomb precursor. A high temperature coating resin is applied to the composite honeycomb precursor to form the high temperature composite honeycomb.

    Polymer Powder Composition For Additive Manufacturing
    44.
    发明申请
    Polymer Powder Composition For Additive Manufacturing 审中-公开

    公开(公告)号：US20200369898A1

    公开(公告)日：2020-11-26

    申请号：US16422283

    申请日：2019-05-24

    Applicant: Hexcel Corporation

    Inventor： Whitney Kline ,  Alden Winn ,  Lawrence Varholak

    IPC: C09D11/102 ,  C09D11/037 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/153

    Abstract: A powder composition suitable for use in selective laser sintering for printing an object. The powder composition includes a first fraction having a polyetherketoneketone (PEKK) powder having a plurality of particles. The powder composition includes a second fraction having a plurality of siloxane particles that is dry blended with the PEKK powder prior to selective laser sintering of the powder. In some embodiments, the powder composition includes a third fraction of carbon fiber. The powder composition when used in selective laser sintering results in parts with more consistent results and improves process economics.

    Metal AM process with in situ inspection
    46.
    发明授权
    Metal AM process with in situ inspection 有权

    公开(公告)号：US10675684B2

    公开(公告)日：2020-06-09

    申请号：US15496702

    申请日：2017-04-25

    Applicant: Hexcel Corporation

    Inventor： Scott DeFelice ,  Anthony DeCarmine

    IPC: B22F3/105 ,  G01N21/88 ,  G01N29/04 ,  G01N27/90 ,  B23K15/00 ,  B23K20/12 ,  B23K31/12 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y50/02 ,  B23P23/04 ,  B23P15/00

    Abstract: A system for inspecting a part while said part is produced by additive manufacturing, includes an additive manufacturing apparatus having a build tray, the apparatus being configured to fabricate the part layer-by-layer on the tray; an automated tool holder carrying a tool configured to deposit, add or weld layer-upon-layer of material; the tool holder and tray are configured to move relative to one another along a defined path; and an inspection device attached to the tool holder and configured to scan a layer of material in situ. The tool holder alternately arranges the tool and inspection device in a working position so that the tool holder fixes the tool in the working position for depositing, adding, or welding the layer of material and thereafter the tool holder switches said tool with the inspection device into the working position for scanning and detecting defects in the layer of material.

    FLEXIBLE ACOUSTIC HONEYCOMB
    50.
    发明申请
    FLEXIBLE ACOUSTIC HONEYCOMB 审中-公开

    公开(公告)号：US20190024589A1

    公开(公告)日：2019-01-24

    申请号：US15653686

    申请日：2017-07-19

    Applicant: Hexcel Corporation

    Inventor： Lisa D. Bowen ,  Jessica Miller

    IPC: F02C7/24 ,  F02C7/045 ,  G10K11/172 ,  E04B1/84 ,  E04B1/86

    Abstract: Acoustic structures in which acoustic septa are located in the cells of a honeycomb for reducing the noise generated from a source The honeycomb used to form the acoustic structure has walls that contain convex and concave contours which make the honeycomb flexible. The acoustic septa are formed by inserting planar acoustic inserts into the honeycomb cells to form a septum cap which is friction-locked within the cell and then permanently bonded in place. The planar acoustic septum is configured to match the unique shape of the cell contours to provide desired friction-locking when inserted into the cells and desired acoustic properties after being permanently bonded in place.

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