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US 10,864,675 B2Granted
Method for the layered construction of a shaped body
AssigneeLithoz GmbH
InventorsJohannes Homa, Johannes Patzer, Rafael Reiter, Manfred Spitzbart
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AssigneeLithoz GmbH
InventorsJohannes Homa, Johannes Patzer, Rafael Reiter, Manfred Spitzbart
Estimating the term…
A method for the layered construction of a shaped body of highly viscous photopolymerizable material, where layers of said shaped body are formed one after the other and one on top of the other, includes forming a material layer of predetermined thickness (a) of the highly viscous photopolymerizable material in a tank, which has a bottom, and lowering the construction platform, or the shaped body at least partially formed on the construction platform, into the material layer so as to cause a layer of the highly viscous photopolymerizable material to form between the construction platform or shaped body and the tank bottom, which layer is cured in a position-selective manner, in particular by irradiation through the tank bottom, to provide the desired shape of the shaped body layer, in which at least one material layer includes a layer thickness variation in the lateral direction.
A method for the layered construction of a shaped body of viscous photopolymerizable material having a viscosity of at least 10 Pa·s, where layers of the shaped body are formed on a construction platform one after the other and one on top of the other by forming a plurality of material layers of a predetermined thickness of the viscous photopolymerizable material in a tank and lowering the construction platform, or the shaped body at least partially formed on the construction platform, into the material layer so as to cause a layer of the viscous photopolymerizable material to form between the construction platform or the shaped body and the tank bottom, which layer is cured in a position-selective manner to provide a desired shape of the formed layer of the shaped body, wherein at least one of the plurality of material layers comprises a layer thickness variation in the lateral direction, wherein after the curing step the construction platform step is lifted and again lowered into the tank for the formation of the next shaped body layer after forming an additional material layer of the viscous photopolymerizable material below the lifted construction platform, wherein the forming of the additional material layer is performed by the distribution of said viscous photopolymerizable material using a doctor blade, and wherein the layer thickness (a) of the additional material layer is adjusted by adjusting the distance between the lower edge of the doctor blade and the tank bottom.
A method for the layered construction of a shaped body of a viscous photopolymerizable material having a viscosity of at least 10 Pa·s, comprised of a resin with a ceramic filler in a tank having a bottom that has at least a portion that is translucent, wherein layers of the shaped body are formed one after the other and one on top of the other each forming a plurality of material layers of predetermined thickness of the viscous photopolymerizable material on a construction platform in the tank and lowering the construction platform, or the shaped body at least partially formed on the construction platform, into the viscous photopolymerizable material in the tank so as to cause a layer of the viscous photopolymerizable material to form between the construction platform or shaped body and the tank bottom, which layer is cured in a position-selective manner by irradiation through the tank bottom, to provide a desired shape of the layer of the shaped body, wherein at least one of the plurality of material layers comprises a thickness variation in the lateral direction, wherein after the curing step the construction platform is lifted and again lowered into the tank for the formation of the next shaped body layer after forming an additional material layer of the viscous photopolymerizable material below the lifted construction platform, wherein the forming to the additional material layer is performed by the distribution of said viscous photopolymerizable material using a doctor blade, and wherein the layer thickness (a) of the additional material layer is adjusted by adjusting the distance between the lower edge of the doctor blade and the tank bottom.
Dependencies are inferred from the claim text.