Granulated powder and method for producing granulated powder
AssigneeSeiko Epson Corporation
InventorTakeshi KADOMURA
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Abstract
A granulated powder includes a metal powder and an organic binder and is obtained by binding a plurality of metal particles in the metal powder to one another by the organic binder. The organic binder contains polyvinyl alcohol or a derivative thereof and a polyol. Further, the ratio of the apparent density of the granulated powder to the true density of the metal powder (a metal material constituting the metal powder) is from 20% to 50%. Further, as the polyol, glycerin is preferred, and the amount thereof is preferably from 0.01 to 0.2 parts by weight based on 100 parts by weight of the metal powder.
Claims9
A granulated powder, comprising:
- a plurality of metal particles bound to one another by an organic binder,
- wherein the organic binder contains:
- polyvinyl alcohol or a derivative thereof, and
- a polyol, and
- a ratio of the apparent density of the granulated powder to a true density of the metal particles is from 20% to 50%.
A method for producing a granulated powder, comprising:
- providing a metal powder;
- while tumbling or flowing the metal powder, simultaneously supplying a solution of an organic binder to the metal powder,
- wherein the organic binder contains:
- polyvinyl alcohol or a derivative thereof, and
- a polyol,
- to granulate the metal powder.
Dependencies are inferred from the claim text.