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Ionizing radiation post-curing of objects produced by stereolithography and other methods

  • US 6,107,008 A
  • Filed: 08/29/1997
  • Issued: 08/22/2000
  • Est. Priority Date: 08/29/1997
  • Status: Expired due to Fees
First Claim
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1. A method for forming an object comprising:

  • forming a mixture of a cationically curable epoxy resin and a cationic initiator;

    shaping said mixture by irradiating the mixture in a pattern using actinic radiation sufficient to obtain an uniform and incomplete cure; and

    post-curing said shaped mixture without thermal cure by irradiation using high-energy electron beam ionizing radiation for a period of time sufficient to effectuate efficient cross-linking and an essentially complete and uniform curing, wherein said curable epoxy resin comprises a semi-solid triglycidyl ether of tris(hydroxyphenyl) methane and a low viscosity bisphenol A epoxy resin.

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