US 11,673,323 B2
Fluorescent binders for use in monitoring additive manufacturing processes
Arunkumar Natarajan, Mason, OH (US); Joshua Tyler Mook, Cincinnati, OH (US); Kwok Pong Chan, Niskayuna, NY (US); William C. Alberts, Saratoga Springs, NY (US); and Vadim Bromberg, Niskayuna, NY (US)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on May 21, 2021, as Appl. No. 17/326,707.
Claims priority of provisional application 63/029,961, filed on May 26, 2020.
Prior Publication US 2021/0370588 A1, Dec. 2, 2021
Int. Cl. B29C 64/165 (2017.01); B33Y 10/00 (2015.01); B33Y 80/00 (2015.01); B33Y 70/10 (2020.01); C08K 5/00 (2006.01); C09B 57/00 (2006.01)
CPC B29C 64/165 (2017.08) [B33Y 10/00 (2014.12); B33Y 70/10 (2020.01); B33Y 80/00 (2014.12); C08K 5/0041 (2013.01); C09B 57/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of manufacturing a green body part, comprising:
depositing a layer of powder on a working surface; and
selectively depositing a binder solution comprising a thermoplastic binder, an encapsulated fluorescent material, and a binder medium into the layer of powder in a pattern representative of a structure of a layer of the green body part wherein:
the thermoplastic binder comprises one or more polymer strands dissolved in a solvent medium having a weight average molecular weight from greater than or equal to 7,000 g/mol to less than or equal to 100,000 g/mol; and
the encapsulated fluorescent material comprises at least one of an aromatic dye and a chromophore having at least one sulfonate or triazine group.