US 11,718,080 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, Chicago, IL (US)
Filed on Jan. 8, 2020, as Appl. No. 16/737,674.
Prior Publication US 2021/0206153 A1, Jul. 8, 2021
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)] 20 Claims
OG exemplary drawing
 
1. A method of fabricating a coated sheet for use in an additive manufacturing (AM) process, the method comprising:
positioning a sheet on a substrate, the sheet being formed of a base polymer material having a first dielectric loss factor with a first tan value in a predefined microwave frequency range;
applying a liquid coating to at least a portion of an exterior of the sheet, the liquid coating being formed of a coating polymer material distinct from the base polymer material and having a second dielectric loss factor with a second tan value in the predefined microwave frequency range, the second tan value being substantially larger than the first tan value of the base polymer material and thereby more susceptible to heating in response to electromagnetic energy than the base polymer material during the AM process;
drying the liquid coating on the sheet to form the coated sheet; and
forming an object using the coated sheet in the AM process,
wherein the coated sheet includes a base polymer layer formed by the sheet, and a coating polymer layer formed by the liquid coating after drying the liquid coating.