US 12,330,366 B2
3D printing of a reflector using polymer filled with metal coated glass or mica particles and reflector obtainable thereby
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. 16/613,265
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed May 7, 2018, PCT No. PCT/EP2018/061689
§ 371(c)(1), (2) Date Nov. 13, 2019,
PCT Pub. No. WO2018/210602, PCT Pub. Date Nov. 22, 2018.
Claims priority of application No. 17170997 (EP), filed on May 15, 2017.
Prior Publication US 2020/0139616 A1, May 7, 2020
Int. Cl. B29C 64/118 (2017.01); B29C 64/00 (2017.01); B33Y 10/00 (2015.01); B33Y 70/10 (2020.01); B33Y 80/00 (2015.01); F21V 7/24 (2018.01); B29K 101/12 (2006.01); B29K 505/02 (2006.01); B29K 509/08 (2006.01); B29K 509/10 (2006.01); B29L 11/00 (2006.01)
CPC B29C 64/118 (2017.08) [B29C 64/00 (2017.08); B33Y 10/00 (2014.12); B33Y 70/10 (2020.01); B33Y 80/00 (2014.12); F21V 7/24 (2018.02); B29K 2101/12 (2013.01); B29K 2505/02 (2013.01); B29K 2509/08 (2013.01); B29K 2509/10 (2013.01); B29L 2011/0083 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for manufacturing a reflector by 3D printing, the method comprising providing a filament of 3D printable material and printing during a printing stage said 3D printable material, to provide said reflector comprising 3D printed material, wherein the 3D printable material further comprises particles, wherein the particles comprise one or more of glass and mica, wherein the particles have a coating, wherein the coating comprises one or more of a metal coating and a metal oxide coating, and wherein the particles have a longest dimension (A1) having an longest dimension length (L1) selected from the range of 10 μm-2 mm, and wherein the particles have an aspect ratio of at least 10, wherein the coating comprises a light reflective material, and wherein the 3D printable material comprises a polymeric material which is transparent to light to enable the particles to provide a diffuse reflection having a reflectivity of at least 85%.