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    Polymer Powder Composition For Additive Manufacturing
    1.
    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.

    System for Identifying Parts Formed in an Additive Manufacturing Build
    2.
    发明申请
    System for Identifying Parts Formed in an Additive Manufacturing Build 有权

    公开(公告)号：US20210140860A1

    公开(公告)日：2021-05-13

    申请号：US16682762

    申请日：2019-11-13

    Applicant: Hexcel Corporation

    Inventor： Whitney Kline ,  Alden Winn

    IPC: G01N3/08 ,  B29C64/153

    Abstract: A system and method for identifying test bars formed during a selective laser sintering build. A part cake is formed during a selective laser sintering build. The part cake comprises parts formed from a powder by selective laser sintering and unsintered powder around the formed parts. The parts include test bars for performing material testing. Each test bar includes a plurality of indentations in a first grip section and a second grip section. The plurality of indentations are arranged in a information providing pattern that is adapted to be readable after the test part is removed from the part cake.

    Polymer Powder and Object Made from the Same
    3.
    发明申请
    Polymer Powder and Object Made from the Same 审中-公开

    公开(公告)号：US20200165417A1

    公开(公告)日：2020-05-28

    申请号：US16778721

    申请日：2020-01-31

    Applicant: Hexcel Corporation

    Inventor： Whitney Kline ,  Lawrence Varholak

    IPC: C08K7/06 ,  B29B9/02 ,  B33Y70/00

    Abstract: A powder composition suitable for use in selective laser sintering for printing an object. The powder composition includes a first fraction including a plurality of polyaryletherketone (PAEK) particles having a mean diameter less than 30 microns, a second fraction having a plurality of polyaryletherketone (PAEK) particles having a mean diameter greater than 30 microns, and a third fraction having a plurality of carbon fibers. The first fraction and the second fraction are formed by an air classification separation performed on a pulverized powder. After the separation, the first fraction, the second fraction, and the third fraction are blended in a high intensity mixer. The powder composition when used in selective laser sinter results in parts with increased tensile strength and reduced surface roughness, among other improvements, as compared to similar powders omitting the first fraction. The PAEK may include polyetherketoneketone (PEKK).

    Polymer powder and object made from the same
    7.
    发明授权
    Polymer powder and object made from the same 有权

    公开(公告)号：US11161967B2

    公开(公告)日：2021-11-02

    申请号：US16778721

    申请日：2020-01-31

    Applicant: Hexcel Corporation

    Inventor： Whitney Kline ,  Lawrence Varholak

    IPC: C08K7/06 ,  B33Y70/00 ,  B29B9/02 ,  B33Y30/00

    Abstract: A powder composition suitable for use in selective laser sintering for printing an object. The powder composition includes a first fraction including a plurality of polyaryletherketone (PAEK) particles having a mean diameter less than 30 microns, a second fraction having a plurality of polyaryletherketone (PAEK) particles having a mean diameter greater than 30 microns, and a third fraction having a plurality of carbon fibers. The first fraction and the second fraction are formed by an air classification separation performed on a pulverized powder. After the separation, the first fraction, the second fraction, and the third fraction are blended in a high intensity mixer. The powder composition when used in selective laser sinter results in parts with increased tensile strength and reduced surface roughness, among other improvements, as compared to similar powders omitting the first fraction. The PAEK may include polyetherketoneketone (PEKK).

    Polymer Powder and Method of Preparing the Same
    8.
    发明申请
    Polymer Powder and Method of Preparing the Same 审中-公开

    公开(公告)号：US20200087487A1

    公开(公告)日：2020-03-19

    申请号：US16134385

    申请日：2018-09-18

    Applicant: Hexcel Corporation

    Inventor： Whitney Kline ,  Lawrence Varholak

    IPC: C08K7/06 ,  B29B9/02 ,  B33Y70/00

    Abstract: A powder composition suitable for use in selective laser sintering for printing an object. The powder composition includes a first fraction comprising a plurality of polyaryletherketone (PAEK) particles having a mean diameter less than 30 microns, a second fraction comprising a plurality of polyaryletherketone (PAEK) particles having a mean diameter greater than 30 microns, and a third fraction comprising a plurality of carbon fibers. The first fraction and the second fraction are formed by an air classification separation performed on a pulverized powder. After the separation, the first fraction, the second fraction, and the third fraction are blended in a high intensity mixer. The powder composition when used in selective laser sinter results in parts with increased tensile strength and reduced surface roughness, among other improvements, as compared to similar powders omitting the first fraction. The PAEK may include polyetherketoneketone (PEKK).

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