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    RECOVERING FLUOROPOLYMER FROM THREE-DIMENSIONAL PRINTED OBJECTS
    1.
    发明申请
    RECOVERING FLUOROPOLYMER FROM THREE-DIMENSIONAL PRINTED OBJECTS 审中-公开

    公开(公告)号：WO2022086513A1

    公开(公告)日：2022-04-28

    申请号：PCT/US2020/056579

    申请日：2020-10-21

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： FUNG, Erica ,  YEMANE, Alay ,  DISCEKICI, Emre Hiro

    IPC: C08J11/08 ,  B29B17/02 ,  B33Y40/00

    Abstract: A method of recovering fluoropolymer from a three-dimensional printed object can include dissolving a fluoropolymer of a three-dimensional printed object in a fluoropolymer-dissolving solvent to generate dissolved fluoropolymer from the three-dimensional object, wherein the three-dimensional printed object includes from about 0.1 wt% to about 10 wt% particulate fusing compound and from about 90 wt% to about 99.9 wt% fluoropolymer. The method can further include separating the particulate fusing compound from the fluoropolymer-dissolving solvent and the dissolved fluoropolymer, and evaporating the fluoropolymer-dissolving solvent from the dissolved fluoropolymer.

    DETERMINE RATIOS OF BUILD MATERIALS TO ACHIEVE SELECTED FEATURES
    5.
    发明申请
    DETERMINE RATIOS OF BUILD MATERIALS TO ACHIEVE SELECTED FEATURES 审中-公开

    公开(公告)号：WO2020072032A1

    公开(公告)日：2020-04-09

    申请号：PCT/US2018/053771

    申请日：2018-10-01

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： MIGINNIS, Emily Ann ,  TANDY, Jesiska ,  FUNG, Erica ,  CHENG, Yow Wei

    IPC: B29C64/357 ,  B29C64/393 ,  B33Y40/00 ,  B33Y50/02

    Abstract: According to an example, an apparatus may include a processor and a non-transitory computer readable medium on which is stored machine readable instructions that are to cause the processor to determine an optical property value of a first build material from an image of a sample of the first build material, calculate an age of the first build material from the determined optical property value of the first build material, and based on the calculated age of the first build material, calculate a ratio of a mixture of the first build material and a second build material that results in the mixture achieving a selected feature, the second build material having a different age than the first build material.

    THREE-DIMENSIONAL PRINTING
    8.
    发明申请
    THREE-DIMENSIONAL PRINTING 审中-公开

    公开(公告)号：WO2019245589A1

    公开(公告)日：2019-12-26

    申请号：PCT/US2018/044593

    申请日：2018-07-31

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： FLACK, Kenneth ,  FUNG, Erica ,  FLEISCHMANN, Carolin ,  TANDY, Jesiska ,  QUEROL ESPARCH, Carmina ,  LONG, Greg S. ,  EMAMJOMEH, Ali ,  WOODRUFF, Shannon Reuben ,  DONOVAN, Rachael

    IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/00

    Abstract: An example of a three-dimensional (3D) printing kit includes a build material composition and a fusing agent to be applied to at least a portion of the build material composition during 3D printing. The build material composition includes a semi-crystalline or amorphous thermoplastic polymer having a predicted total dimension change during 3D printing ranging from about -4% to about 9%. The fusing agent includes an energy absorber to absorb electromagnetic radiation to coalesce the semi-crystalline or amorphous thermoplastic polymer in the at least the portion. The fusing agent is a core fusing agent and the energy absorber has absorption at least at wavelengths ranging from 400 nm to 780 nm; or the fusing agent is a primer fusing agent and the energy absorber has absorption at wavelengths ranging from 800 nm to 4000 nm and has transparency at wavelengths ranging from 400 nm to 780 nm.

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