US 12,145,310 B2
FDM printed luminaires with surface texture
Rifat Ata Mustafa Hikmet, Eindhoven (NL); Loes Johanna Mathilda Koopmans, Soerendonk (NL); and Stefan Willi Julius Gruhlke, Baesweiler (DE)
Assigned to SIGNIFY HOLDING, B.V., Eindhoven (NL)
Appl. No. 16/625,798
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Jun. 22, 2018, PCT No. PCT/EP2018/066781
§ 371(c)(1), (2) Date Dec. 23, 2019,
PCT Pub. No. WO2019/002133, PCT Pub. Date Jan. 3, 2019.
Claims priority of application No. 17178697 (EP), filed on Jun. 29, 2017.
Prior Publication US 2020/0122386 A1, Apr. 23, 2020
Int. Cl. B29C 64/118 (2017.01); B33Y 10/00 (2015.01); B33Y 80/00 (2015.01); B29K 9/06 (2006.01); B29K 25/00 (2006.01); B29K 33/00 (2006.01); B29K 69/00 (2006.01)
CPC B29C 64/118 (2017.08) [B29K 2009/06 (2013.01); B29K 2025/06 (2013.01); B29K 2033/12 (2013.01); B29K 2069/00 (2013.01); B33Y 10/00 (2014.12); B33Y 80/00 (2014.12)] 16 Claims
OG exemplary drawing
 
1. A method for 3D printing a 3D item with a predetermined surface texture using Fused Deposition Modeling (FDM), the method comprising:
(i) providing 3D printable thermoplastic polymer material comprising particles embedded in the 3D printable thermoplastic polymer material,
wherein the particles have a longest dimension length L1, a shortest dimension length L2, and an aspect ratio AR defined as the ratio of the longest dimension length L1 and the shortest dimension length L2,
(ii) depositing during a printing stage 3D printable thermoplastic polymer material to provide the 3D item; and
controlling the predetermined surface texture via adjustments to the AR and H/L1 and to provide the 3D item with layers of the 3D printed thermoplastic polymer material with a layer height H, wherein 4≤AR≤10,000 and 0.001≤H/L1≤1.