Three-dimensional structered printing
AssigneeHuntsman Advanced Materials Americas LLC
InventorsRanjana Patel, Richard J. Peace, Yong Zhao, Jeremy Powell, Michael Rhodes
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Abstract
A process for forming a three-dimensional article in sequential layers in accordance with a digital model of the article. The process comprises the steps of defining a layer of powder material, applying a liquid reagent to the powder layer in a pattern corresponding to the digital model, and repeating these steps to form successive layers. The powder comprises a first reactive component and the liquid includes a second active component capable of reacting with the first reactive component so that the article is built up in layers.
Claims20
A process for forming a three-dimensional article in sequential cross-sectional layers in accordance with a model of the article, the process comprising the steps of:
- (i) defining a layer of powder material comprising a first reactive component;
- (ii) applying to the layer in a pattern corresponding to a respective cross-sectional layer of the model a liquid reagent comprising a second reactive component;
- (iii) irradiating the layer with electromagnetic radiation to cause the first reactive component to chemically react with itself or with the second reactive component to form a new chemical component and optionally to cause the second reactive component to cure and fill in gaps between the powder;
- and
- (iv) repeating steps (i) to (iii) to form successive layers;
- wherein substantially void-free regions are formed in the article where the liquid reagent has been applied to the powder and wherein the article which is formed has a tensile strength greater than about 25 MPa.
A process for forming a three-dimensional article in sequential cross-sectional layers in accordance with a model of the article, the process comprising the steps of:
- (i) defining a layer of powder material comprising a first reactive component;
- (ii) applying to the layer in a pattern corresponding to a respective cross-sectional layer of the model a liquid reagent comprising a second reactive component and colloidal or nano-particles of ceramics, organic micro-particles, metals and alloys;
- (iii) irradiating the layer with electromagnetic radiation to cause the first reactive component to chemically react with itself or with the second reactive component to form a new chemical component and optionally to cause the second reactive component to cure and fill in gaps between the powder;
- and
- (iv) repeating steps (i) to (iii) to form successive layers;
- wherein substantially void-free regions are formed in the article where the liquid reagent has been applied to the powder and wherein the article which is formed has a tensile strength greater than about 25 MPa.
Dependencies are inferred from the claim text.