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US 7,435,367 B2Granted
Cement system including a binder for use in freeform fabrication
AssigneeHewlett-Packard Development Company, L.P.
InventorChristopher Oriakhi
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Abstract
A cement system for use in freeform fabrication includes a binder composition, which comprises an organic acid and/or an inorganic acid including a phosphate ion, a polyacid, and a primarily aqueous solvent.
Claims32
A method for freeform fabrication of a three-dimensional object, which comprises:
- iteratively infiltrating individual layers of powder including a polymer and at least one inorganic phosphate, with a primarily aqueous binder composition comprising a polyacid which reacts at least with said inorganic phosphate, and further comprising an organic acid and/or an inorganic acid including a phosphate ion,
- wherein the infiltrated powder layers are formed adjacent to one another to form said three-dimensional object.
A freeform fabrication apparatus, which comprises:
- a liquid ejection head;
- and
- a liquid binder composition, including,
- an organic acid and/or an inorganic acid including a phosphate ion;
- a polyacid;
- and
- a primarily aqueous solvent.
4 more elements
Dependencies are inferred from the claim text.