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Methods of manufacturing layered three-dimensional forms

  • US 8,506,870 B2
  • Filed: 06/10/2008
  • Issued: 08/13/2013
  • Est. Priority Date: 06/16/2003
  • Status: Active Grant
First Claim
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1. A method for manufacturing a three-dimensional form, comprising:

  • a) providing a plurality of particulates in the absence of a binder material;

    b) coating the surface of the particulates with an activation agent so that the diameter of the particulates is enlarged;

    c) spreading a layer of coated particulates in the absence of any binder material;

    d) selectively dispensing a fluidic unreacted organic binder material that is activated by the activation agent with a drop-on-demand dispenser onto a pre-selected portion of the particulates having the activation agent, the binder material being contacted with particles no earlier than when the binder material first contacts the activation agent;

    e) hardening the binder material for forming a layer of the three-dimensional form that defines a matrix having the particulates firmly held within it; and

    f) then repeating the steps (a)-(e) to form a remainder of the three-dimensional form.

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