SPHERICAL PARTICLES FOR ADDITIVE MANUFACTURING

    公开(公告)号:US20230340211A1

    公开(公告)日:2023-10-26

    申请号:US18304997

    申请日:2023-04-21

    Applicant: Jabil Inc.

    Abstract: Spherical thermoplastic polymer powders useful for additive manufacturing may be made at high throughputs by a method comprising polymer in a dispersing medium at a temperature above the polymer melting temperature (Tm) under shear for short times (e.g., less than 30 minutes) to form a mixture that is then rapid (faster than ambient cooling) cooled below Tm. The method is particularly useful for thermoplastic polymers having a high melt flow index (MFI) or low capillary viscosity at high shear (˜1000 s−1) within 20 or 30° C. of the polymer's melt temperature. The method may also include a crystallizing temperature below Tm and above the glass transition temperature Tg of the polymer to crystallize amorphous polymers or increase the crystallinity of semi-crystalline polymers.

    AMORPHOUS THERMOPLASTIC ADDITIVE MANUFACTURED ARTICLES AND METHOD TO MAKE THEM

    公开(公告)号:US20220388238A1

    公开(公告)日:2022-12-08

    申请号:US17832175

    申请日:2022-06-03

    Applicant: Jabil Inc.

    Abstract: A semi-crystalline blended polymer useful for additive manufacturing is comprised of an amorphous thermoplastic polymer and a thermoplastic semi-crystalline polymer, each of the polymers being essentially miscible in the other and being blended at a weight ratio of amorphous polymer/semi-crystalline polymer of greater that 1 to about 20. The semi-crystalline blended polymer displays a DSC melt peak enthalpy of at least about 3 joules/g. The semi-crystalline polymer may be made by blending the aforementioned polymers at the weight ratio and subject to heating between the melt temperature of the semi-crystalline polymer and the glass transition temperature of the amorphous polymer. The semi-crystalline blended polymer may revert to essentially an amorphous polymer when additive manufactured by fusing layers of said polymer powders together.

    ADDITIVE MANUFACTURING BREAK AWAY SUPPORT MATERIAL

    公开(公告)号:US20220332968A1

    公开(公告)日:2022-10-20

    申请号:US17723848

    申请日:2022-04-19

    Applicant: Jabil Inc.

    Abstract: An additive manufacturing composition useful as a support material for common build materials (e.g., polyamide or polyester) is comprised of a blend of an elastomer toughened styrenic polymer having discreet domains of polymerized conjugate diene dispersed within a styrenic matrix and a vinyl aromatic-maleic anhydride copolymer. The composition may be used as a support material in additive manufacturing methods such as extrusion methods (e.g., fused filament fabrication). The compositions may be tuned to realize the desired adherence to facilitate the desired support while also allowing for the mechanical removal without breakage of the underlying part or residual adhered support material.

    ELASTOMERIC ADDITIVE MANUFACTURING COMPOSITION

    公开(公告)号:US20220332938A1

    公开(公告)日:2022-10-20

    申请号:US17723850

    申请日:2022-04-19

    Applicant: Jabil Inc.

    Abstract: A composition useful for additive manufacturing is comprised of a thermoplastic elastomer blended with an aliphatic polyketone, wherein the thermoplastic elastomer is a continuous phase having dispersed therein separated domains of polyketone. The composition is useful for additive printing methods employing heating and extrusion of the composition to form extrudates that are printed an article comprised of fused layers of the composition. The composition facilitates the formation of extrusion based elastomeric additive manufactured articles.

    ADDITIVE MANUFACTURING BREAK AWAY SUPPORT MATERIAL

    公开(公告)号:US20230407126A1

    公开(公告)日:2023-12-21

    申请号:US18239957

    申请日:2023-08-30

    Applicant: Jabil Inc.

    CPC classification number: C09D125/06 B33Y70/00 B29C64/40 B33Y10/00

    Abstract: An additive manufacturing composition useful as a support material for common build materials (e.g., polyamide or polyester) is comprised of a blend of an elastomer toughened styrenic polymer having discreet domains of polymerized conjugate diene dispersed within a styrenic matrix and a vinyl aromatic-maleic anhydride copolymer. The composition may be used as a support material in additive manufacturing methods such as extrusion methods (e.g., fused filament fabrication). The compositions may be tuned to realize the desired adherence to facilitate the desired support while also allowing for the mechanical removal without breakage of the underlying part or residual adhered support material.

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