US 12,311,639 B2
Interlayer film for laminated glass, and laminated glass
Jun Ishida, Shiga (JP); and Hiromitsu Nishino, Shiga (JP)
Assigned to SEKISUI CHEMICAL CO., LTD., Osaka (JP)
Appl. No. 17/922,672
Filed by SEKISUI CHEMICAL CO., LTD., Osaka (JP)
PCT Filed Jun. 23, 2021, PCT No. PCT/JP2021/023737
§ 371(c)(1), (2) Date Nov. 1, 2022,
PCT Pub. No. WO2021/261507, PCT Pub. Date Dec. 30, 2021.
Claims priority of application No. 2020-109395 (JP), filed on Jun. 25, 2020.
Prior Publication US 2023/0264456 A1, Aug. 24, 2023
Int. Cl. B32B 17/10 (2006.01)
CPC B32B 17/1066 (2013.01) [B32B 17/10036 (2013.01); B32B 17/10761 (2013.01); B32B 2250/03 (2013.01); B32B 2307/412 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An interlayer film for laminated glass, when the interlayer film being arranged between two sheets of clear glass conforming to JIS R3202: 1996 to obtain a laminated glass X, and parallel light transmittance being measured for the obtained laminated glass X, the interlayer film having a colored region with a parallel light transmittance of less than 60%, and a transparent region with a parallel light transmittance of 60% or more,
the interlayer film having an average thickness in the colored region smaller than an average thickness in the transparent region, and
the interlayer film having an absolute value of difference between the average thickness in the colored region and the average thickness in the transparent region of 10 μm or more.