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    METHOD AND SYSTEM FOR LEVELING A LAYER IN FREEFORM FABRICATION
    21.
    发明申请
    METHOD AND SYSTEM FOR LEVELING A LAYER IN FREEFORM FABRICATION 有权

    公开(公告)号：US20220152914A1

    公开(公告)日：2022-05-19

    申请号：US17600360

    申请日：2020-03-30

    Applicant: Stratasys Ltd.

    Inventor： Barak GLASSMAN

    IPC: B29C64/112 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/245 ,  B29C64/241

    Abstract: A method of fabricating an object in layers, comprises, for at least one layer: dispensing a building material formulation to form a first portion of the layer, and leveling the first portion by a leveling device; increasing a vertical distance between the first portion and the leveling device; and while a topmost surface of the first portion is exposed and beneath a segment of the leveling device: dispensing a building material formulation to form a second portion of the layer, laterally displaced from the first portion along an indexing direction, and leveling the second portion by the leveling device.

    Apparatus and method for pressure regulation
    22.
    发明授权
    Apparatus and method for pressure regulation 有权

    公开(公告)号：US11325394B2

    公开(公告)日：2022-05-10

    申请号：US15477660

    申请日：2017-04-03

    Applicant: Stratasys Ltd.

    Inventor： Gil Lavie ,  Moshe Levi

    IPC: B41J2/175

    Abstract: A system for maintaining a desired pressure difference between a first pressure within a chamber and a reference pressure at a reference space. The system may include a peristaltic pump located along a duct that connects the chamber with the reference space. The system may further include a pressure sensor for monitoring an actual pressure difference between the first pressure within the chamber and the reference pressure at the reference space. The system may also include a controller for receiving a signal from the pressure sensor for determining the actual pressure difference from the pressure sensor and for operating the peristaltic pump, in accordance with the actual pressure difference and the desired pressure difference, to increase, decrease or leave unchanged the pressure within the chamber so as to maintain the actual pressure difference within predetermined proximity to the desired pressure difference.

    SOLID FREEFORM FABRICATION OF SHELLED OBJECTS
    23.
    发明申请
    SOLID FREEFORM FABRICATION OF SHELLED OBJECTS 有权

    公开(公告)号：US20220097291A1

    公开(公告)日：2022-03-31

    申请号：US17548649

    申请日：2021-12-13

    Applicant: Stratasys Ltd.

    Inventor： Daniel DIKOVSKY ,  Avraham LEVY ,  Eduardo NAPADENSKY

    IPC: B29C64/112 ,  B29C64/393 ,  B29C64/135

    Abstract: A method of layerwise solid freeform fabrication is disclosed. The method comprises, for each of at least a few of the layers, dispensing and hardening at least a first modeling material and a second modeling material to form a core region and one or more envelope regions at least partially surrounding the core region. In some embodiments, the ratio between the elastic moduli of adjacent regions, when hardened, is from about 1 to about 20.

    METHOD FOR ADDITIVE MANUFACTURING WITH PARTIAL CURING
    27.
    发明申请
    METHOD FOR ADDITIVE MANUFACTURING WITH PARTIAL CURING 有权

    公开(公告)号：US20210354398A1

    公开(公告)日：2021-11-18

    申请号：US17280324

    申请日：2019-09-27

    Applicant: Stratasys Ltd.

    Inventor： Mariana POKRASS ,  Lev KUNO ,  Eviatar GOLAN ,  Oren ZORAN

    IPC: B29C64/40 ,  B29C64/106 ,  B29C35/08 ,  B33Y10/00

    Abstract: A method of additive manufacturing (AM) includes dispensing a first building material formulation to form an outer region, and dispensing a second building material formulation to form an inner region, the outer region surrounding the inner region, the inner and outer regions being shaped to form a layer of the object; exposing the layer to a first curing condition, repeating the dispensing and the exposing to sequentially form a plurality of layers of the object and collectively exposing the plurality of layers to a second curing condition. The selections are such that the first building material formulation is hardened to a higher degree than the second building formulation. The outer regions form a hardened coating that at least partially encapsulates the inner regions. The second curing condition is other than the first curing condition and is selected to increase the degree that the inner region is hardened.

    THREE-DIMENSIONAL INKJET PRINTING OF A THERMALLY STABLE OBJECT
    30.
    发明申请
    THREE-DIMENSIONAL INKJET PRINTING OF A THERMALLY STABLE OBJECT 有权

    公开(公告)号：US20210308938A1

    公开(公告)日：2021-10-07

    申请号：US17280956

    申请日：2019-09-27

    Applicant: Stratasys Ltd.

    Inventor： Lev KUNO

    IPC: B29C64/112 ,  C09D11/38 ,  B33Y70/00

    Abstract: A formulation system usable in additive manufacturing of a three-dimensional object that comprises, in at least a portion thereof, a cyanate ester-containing polymeric network, and additive manufacturing processes employing the formulation system are provided. Also provided are objects obtainable by the additive manufacturing and kits containing the formulation system. The formulation system includes a first modeling material formulation which includes a first curable material which is a thermally-curable cyanate ester and a second modeling material formulation which comprises an activating agent for promoting polymerization of the cyanate ester and is devoid of the first curable material, and further includes a second curable material which is different from the first curable material, and optionally an agent for promoting hardening of the second curable material.

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