US 12,466,164 B2
Intermediate film for laminated glasses, laminated glass, and automobile
Yasuyuki Izu, Roermond (NL); Masashi Yanai, Roermond (NL); Hiroaki Inui, Kouka (JP); Ruud Verheijen, Roermond (NL); Sho Fujioka, Kouka (JP); and Maya Mitsuka Wakayama, Roermond (NL)
Assigned to SEKISUI CHEMICAL CO., LTD., Osaka (JP)
Appl. No. 17/046,997
Filed by SEKISUI CHEMICAL CO., LTD., Osaka (JP)
PCT Filed May 16, 2019, PCT No. PCT/JP2019/019442
§ 371(c)(1), (2) Date Oct. 12, 2020,
PCT Pub. No. WO2019/221218, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 2018-094419 (JP), filed on May 16, 2018.
Prior Publication US 2021/0046738 A1, Feb. 18, 2021
Int. Cl. B32B 17/10 (2006.01); B60J 1/00 (2006.01); B60Q 1/30 (2006.01); B60Q 1/44 (2006.01); F21S 43/20 (2018.01); F21W 103/35 (2018.01)
CPC B32B 17/10036 (2013.01) [B32B 17/1011 (2013.01); B32B 17/10339 (2013.01); B32B 17/10651 (2013.01); B32B 17/1066 (2013.01); B32B 17/10761 (2013.01); B60J 1/001 (2013.01); B60Q 1/44 (2013.01); F21S 43/26 (2018.01); B32B 2307/402 (2013.01); B32B 2307/412 (2013.01); B32B 2605/006 (2013.01); B32B 2605/08 (2013.01); F21W 2103/35 (2018.01)] 16 Claims
OG exemplary drawing
 
1. An interlayer film for laminated glass, comprising:
one end; and an other end at an opposite side of the one end,
the interlayer film comprising:
a first colored part containing a coloring agent; and a second colored part containing a coloring agent,
the first colored part including a part located closer to the one end of the interlayer film than the second colored part, the second colored part including a part located closer to the other end of the interlayer film than the first colored part,
the first colored part having a first gradation part where visible light transmittance increases from the one end side toward the other end side of the interlayer film, the first gradation part forming a tip of the first colored part on the other end side of the interlayer film,
the second colored part having a second gradation part where visible light transmittance increases from the other end side toward the one end side of the interlayer film, the second gradation part forming a tip of the second colored part on the one end side of the interlayer film,
wherein when the interlayer film is planarly viewed, a plane area of a part where at least one of the first colored part and the second colored part exists is 80% or more in 100% of a total plane area of the interlayer film, and
wherein the interlayer film has a configuration A, B or C below:
the configuration A being that when the interlayer film is planarly viewed, the tip of the first gradation part and the tip of the second gradation part are located at an identical position,
the configuration B being that when the interlayer film is planarly viewed, there is a region where the first gradation part and the second gradation part overlap, and
the configuration C being that when the interlayer film is planarly viewed, the first gradation part and the second gradation part do not overlap, and being that when the interlayer film is planarly viewed, a distance of a part between the tip of the first gradation part and the tip of the second gradation part is more than 0 cm and 30 cm or less.