Process and device for producing solid bodies by sequential layer buildup
First Claim
1. Process for layer-by-layer production of a three dimensional body, including the repeated succession of the steps applying a layer of powder particles, by means of a dispensing device, upon a substrate activation, in defined areas, of an adhesive present on the powder particles and/or in the powder particle layer solidification of the activated adhesive and adhesion of powder particles within the layer and with the substrate thereby characterized, that the powder particle layer is subjected to ionized particles and thereupon brushed flat by an electrically insulated blade prior to activation of the adhesive.
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Accused Products
Abstract
Process for layer-wise production of a three dimensional body (generative rapid prototyping), in particular by 3D binder printer, including a multiple succession of the steps of depositing a powder particle layer, activating in defined areas an adhesive present on the powder particles and/or in the powder particle coating, as well as adhering the powder particles to each other and to the layer thereunder, wherein the powder particle layer is electrically discharged by ionized particles and brushed flat by means of an electrically insulated blade prior to activation of the adhesive material, and the invention further concerns a device adapted for application of thin powder particle layers, including at least one ionizing device.
47 Citations
20 Claims
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1. Process for layer-by-layer production of a three dimensional body, including the repeated succession of the steps
applying a layer of powder particles, by means of a dispensing device, upon a substrate activation, in defined areas, of an adhesive present on the powder particles and/or in the powder particle layer solidification of the activated adhesive and adhesion of powder particles within the layer and with the substrate thereby characterized, that the powder particle layer is subjected to ionized particles and thereupon brushed flat by an electrically insulated blade prior to activation of the adhesive.
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13. Device for layer-by-layer buildup of three dimensional bodies from adhered powder particles, including
a conveyor device (3) for applying powder particles (5) a flattening device (8) for brushing flat an exposed powder particle layer a binder or solvent emitting nozzle or a laser light source for activation of an adhesive present on the powder particles and/or in the powder particle layer, thereby characterized, that at least one ionizing device (6′ - ) is provided on the flattening device (8), which emits charged particles (7′
) on the applied powder particles. - View Dependent Claims (14, 15, 16, 17, 18)
- ) is provided on the flattening device (8), which emits charged particles (7′
Specification