US 11,780,211 B2
Colored thermoplastic intermediate layer with wedge-shaped cross-section
Stephan Gier, Bous (DE); and Andrea Willms, Aachen (DE)
Assigned to SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
Appl. No. 17/801,682
Filed by SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
PCT Filed Mar. 25, 2021, PCT No. PCT/EP2021/057675
§ 371(c)(1), (2) Date Aug. 23, 2022,
PCT Pub. No. WO2021/204550, PCT Pub. Date Oct. 14, 2021.
Claims priority of application No. 20168474 (EP), filed on Apr. 7, 2020.
Prior Publication US 2023/0131635 A1, Apr. 27, 2023
Int. Cl. B32B 17/10 (2006.01); B32B 3/26 (2006.01); B32B 33/00 (2006.01); B32B 37/22 (2006.01)
CPC B32B 17/10568 (2013.01) [B32B 3/263 (2013.01); B32B 17/10036 (2013.01); B32B 17/1077 (2013.01); B32B 17/10633 (2013.01); B32B 17/10651 (2013.01); B32B 17/10678 (2013.01); B32B 17/10788 (2013.01); B32B 17/10935 (2013.01); B32B 33/00 (2013.01); B32B 37/223 (2013.01); B32B 2250/03 (2013.01); B32B 2250/40 (2013.01); B32B 2307/102 (2013.01); B32B 2307/4026 (2013.01); B32B 2315/085 (2013.01); B32B 2329/06 (2013.01); B32B 2331/04 (2013.01); B32B 2375/00 (2013.01); B32B 2457/20 (2013.01); B32B 2605/006 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A colored thermoplastic intermediate layer with a width, a height, and a wedge-shaped cross-section with a thicker first end and a thinner second end, at least comprising a first colored thermoplastic layer with a width, a height, and a wedge-shaped cross-section with a thicker first end and a thinner second end,
wherein
the width and the height of the colored thermoplastic intermediate layer equal the width and the height of the first colored thermoplastic layer,
the first colored thermoplastic layer has a dye,
a dye concentration in the first colored thermoplastic layer increases from its thicker first end to its thinner second end,
a light transmittance through the first colored thermoplastic layer is constant over its entire width and its entire height, and
a light transmittance through the colored thermoplastic intermediate layer is constant over its entire width and its entire height.