Method for producing a three-dimensional shaped object by means of layer-by-layer material application

    公开(公告)号:US12042982B2

    公开(公告)日:2024-07-23

    申请号:US17267054

    申请日:2019-08-12

    Applicant: dp polar GmbH

    Inventor: Hans Mathea

    Abstract: In a method for producing a three-dimensional mold and a three-dimensional shaped object (1) by means of layer-by-layer material application, geometry data for the shaped object (1), a support part (2) having a base surface (3) for holding the three-dimensional shaped object (1), and a first and a second material (4, 5) that can be solidified are made available. In the solidified state, the second material (5) has a greater strength than the solidified first material (4). The solidified first material (4) can dissolve in the solvent. To form a negative-shape layer (12), material portions of the flowable first material (4) are applied to the base surface (3) and/or to a solidified material layer of the three-dimensional shaped object (1) situated on this surface, in accordance with the geometry data, in such a manner that the negative-shape layer (12) has at least one cavity (13) that has a negative shape of a material layer of the shaped object (1) to be produced. The negative-shape layer (12) is solidified. To form a shaped-object layer (16), the cavity (13) is filled with the second material (5), and afterward the second material (5) is solidified. Regions of the solidified negative-shape layer (12) and/or shaped-object layer (16) that project beyond a plane arranged at a predetermined distance from the base surface (3) are removed by means of machining material removal. The steps mentioned above are repeated at least once. The negative-shape layers (12) are brought into contact with the solvent in such a manner that the solidified first material (4) dissolves in a solvent.

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