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US 12,194,531 B2Granted
Three-dimensional printing
AssigneeHewlett-Packard Development Company, L.P.
InventorJames P Shields
Life of this patent
Estimating the term…
Abstract
This application describes kits, methods, and systems of three dimensional printing. In some examples, described herein are three-dimensional object printing kits comprising a metallic or a ceramic build material, a polymeric binder dispersed in an aqueous liquid vehicle, and a boundary fluid comprising thermally expandable particles.
Claims14
A three-dimensional object printing kit, comprising:
- a build material selected from the group consisting of a metallic build material and a ceramic build material;
- a polymeric binder dispersed in an aqueous liquid vehicle;
- and
- a boundary fluid consisting of water, thermally expandable particles each having a hydrocarbon liquid core and a polymeric shell, and optionally at least one additive selected from the group consisting of a co-solvent and an antimicrobial agent.
1 more element
A method for three-dimensional (3D) printing, comprising:
- patterning layers of a build material to form an intermediate structure, wherein the build material is selected from the group consisting of a metallic build material and a ceramic build material, and the patterning including:
- selectively applying a polymeric binder dispersed in an aqueous liquid vehicle to define a patterned intermediate part;
- and
- selectively applying a boundary fluid adjacent to the patterned intermediate part, the boundary fluid consisting of water, thermally expandable particles each having a hydrocarbon liquid core and a polymeric shell, and optionally at least one additive selected from the group consisting of a co-solvent and an antimicrobial agent;
- and
- heating the intermediate structure to cause the thermally expandable particles to expand and exert a force on unconsolidated build material clinging to the intermediate structure to cause the unconsolidated build material to fall off from the intermediate structure.
3 more elements
A multi-fluid kit for three-dimensional (3D) printing, comprising:
- a polymeric binder dispersed in an aqueous liquid vehicle, wherein the polymeric binder comprises an aqueous liquid vehicle and latex polymer particles dispersed in the aqueous liquid vehicle, and wherein the latex polymer particles are made from (A) a co-polymerizable surfactant and (B) styrene, p-methyl styrene, α-methyl styrene, methacrylic acid, acrylic acid, acrylamide, meth acrylamide, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, methyl methacrylate, hexyl acrylate, hexyl methacrylate, butyl acrylate, butyl methacrylate, ethyl acrylate, ethyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, propyl acrylate, propyl methacrylate, octadecyl acrylate, octadecyl methacrylate, stearyl methacrylate, vinyl benzyl chloride, isobornyl acrylate, tetrahydrofurfuryl acrylate, 2-phenoxyethyl methacrylate, benzyl methacrylate, benzyl acrylate, ethoxylated nonyl phenol methacrylate, ethoxylated benzyl methacrylate, polypropylene glycol monoacrylate, isobornyl methacrylate, cyclohexyl methacrylate, cyclohexyl acrylate, t-butyl methacrylate, n-octyl methacrylate, lauryl methacrylate, tridecyl methacrylate, alkoxylated tetrahydrofurfuryl acrylate, isodecyl acrylate, isobornyl methacrylate, isobornyl acrylate, dimethyl maleate, dioctyl maleate, acetoacetoxyethyl methacrylate, diacetone acrylamide, N-vinyl imidazole, N-vinyl carbazole, N-vinyl-caprolactam, or combinations thereof;
- and
- a boundary fluid comprising thermally expandable particles each having a hydrocarbon liquid core and a polymeric shell.
Dependencies are inferred from the claim text.