US 12,134,256 B2
Coated sheets for improved additive manufacturing parts
Nishant Sinha, Bangalore (IN)
Assigned to The Boeing Company, Chicago, IL (US)
Filed by The Boeing Company, Arlington, VA (US)
Filed on Apr. 19, 2023, as Appl. No. 18/302,890.
Application 18/302,890 is a division of application No. 16/737,674, filed on Jan. 8, 2020, granted, now 11,718,080.
Prior Publication US 2023/0249445 A1, Aug. 10, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 37/00 (2006.01); B29C 64/124 (2017.01); B29C 64/245 (2017.01); B29C 64/295 (2017.01); B32B 27/28 (2006.01); B32B 27/30 (2006.01); B33Y 10/00 (2015.01)
CPC B32B 37/0038 (2013.01) [B29C 64/124 (2017.08); B29C 64/245 (2017.08); B29C 64/295 (2017.08); B32B 27/285 (2013.01); B32B 27/306 (2013.01); B32B 2307/204 (2013.01); B32B 2309/105 (2013.01); B33Y 10/00 (2014.12)] 12 Claims
OG exemplary drawing
 
1. A method of fabricating an object via an additive manufacturing (AM) process, the method comprising:
forming a plurality of coated sheets, including:
providing a plurality of base polymer layer sheets each formed with a base polymer material having a first dielectric loss factor in a predefined frequency range;
applying a liquid polymer coating to at least a portion of a surface of each of the base polymer layer sheets, the liquid polymer coating formed with a coating polymer material having a second dielectric loss factor greater than the first dielectric loss factor of the base polymer material in the predefined frequency range; and
drying the liquid polymer coating on the base polymer layer sheets to form the coated sheets;
stacking the coated sheets to form stacked coated sheets;
compressing the stacked coated sheets to form compressed coated sheets; and
forming the object from the compressed coated sheets via the AM process by dielectrically heating the compressed coated sheets using electromagnetic radiation to thereby fuse together the compressed coated sheets.