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    MATERIAL EXTRUSION 3-D PRINTING ON COMPATIBLE THERMOPLASTIC FILM
    1.
    发明申请
    MATERIAL EXTRUSION 3-D PRINTING ON COMPATIBLE THERMOPLASTIC FILM 审中-公开

    公开(公告)号：US20200282635A1

    公开(公告)日：2020-09-10

    申请号：US16650978

    申请日：2018-09-28

    Applicant: Arkema Inc.

    Inventor： David Shin-Ren LIU ,  Camille KHADRAOUI ,  Mark A. AUBART

    IPC: B29C64/106 ,  B29C70/78

    Abstract: The invention relates to the use of a compatible thermoplastic material (film, sheet, or raft) as the base sheet or layer for 3-D printing an article. The use of the base film provides a means of printing a large article, and of reducing warpage by printing directly on the film. The printed article adheres to the film better than to traditional printer surfaces (glass, metal, glue, or reusable films), because the printed article and film weld together by forming chain entanglements, due to being compatible, miscible, or semi-miscible in the melt.

    ACRYLIC SUPPORT STRUCTURE FOR 3D PRINTED FLUOROPOLYMER ARTICLE
    2.
    发明申请
    ACRYLIC SUPPORT STRUCTURE FOR 3D PRINTED FLUOROPOLYMER ARTICLE 有权

    公开(公告)号：US20220402215A1

    公开(公告)日：2022-12-22

    申请号：US17777546

    申请日：2020-11-17

    Applicant: Arkema Inc.

    Inventor： David S. LIU ,  Mary K. CALVIN ,  Evan J. FISHER ,  Mark A. AUBART ,  Jing-Han WANG

    IPC: B29C64/40 ,  B29C64/112 ,  C08L33/12 ,  C08L27/16 ,  C08L77/00 ,  C08G65/00

    Abstract: The use of compatible, semi-miscible or miscible polymer compositions as support structures for the 3D printing of objects, including those made from polyether-block-amide copolymers such as PEBAX® block copolymers from Arkema, polyamides such as RILSAN® polyamides from Arkema, polyether ketone ketone such as KEPSTAN® PEKK from Arkema, and fluoropolymers, such a KYNAR® PVDF from Arkema, especially objects of polyvinylidene fluoride and its copolymers. One particularly useful miscible polymer is an acrylic polymer, which is miscible with the fluoropolymer in the melt. The support structure composition provides the needed adhesion to the build plate and to the printed object and support strength during the 3D printing process, yet it is removable after the fluoropolymer object has cooled. The support polymer composition is selected to be stiff and low warping, yet flexible enough to be formed into filaments.

    3-D PRINTED SEMI-CRYSTALLINE AND AMORPHOUS POLYMER ARTICLES
    4.
    发明申请
    3-D PRINTED SEMI-CRYSTALLINE AND AMORPHOUS POLYMER ARTICLES 有权

    公开(公告)号：US20210269629A1

    公开(公告)日：2021-09-02

    申请号：US16629973

    申请日：2019-10-03

    Applicant: Arkema Inc.

    Inventor： David Shin-Ren LIU ,  Mark A. AUBART ,  Sara REYNAUD

    IPC: C08L33/12 ,  B33Y70/00 ,  C08L77/06 ,  C08L71/02

    Abstract: The invention relates to 3D printed parts made with thermoplastic polymers having a low stiffening temperature. 3D printed parts of the invention have very good Z layer adhesion, have a high elongation at break in the Z direction, preferably of more than 50 percent, and have at least an 80 percent ratio of Z to XY stress at yield or at break. The resulting part may be nearly isotropic—having similar mechanical properties in the XY and Z print directions. The excellent layer adhesion makes the resultant printed part more robust—able to withstand many cycles of use. Certain polymers of the invention produce printed parts that have a very low haze, and are nearly transparent.

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