US 11,987,020 B2
Interlayer for laminated glass, method for producing interlayer for laminated glass, and laminated glass
Kazuhiko Nakayama, Shiga (JP)
Assigned to SEKISUI CHEMICAL CO., LTD., Osaka (JP)
Filed by SEKISUI CHEMICAL CO., LTD., Osaka (JP)
Filed on Feb. 14, 2023, as Appl. No. 18/109,575.
Application 18/109,575 is a division of application No. 16/475,494, granted, now 11,613,105, previously published as PCT/JP2018/012762, filed on Mar. 28, 2018.
Claims priority of application No. 2017-072767 (JP), filed on Mar. 31, 2017.
Prior Publication US 2023/0182446 A1, Jun. 15, 2023
Int. Cl. B32B 17/10 (2006.01); B60J 1/00 (2006.01)
CPC B32B 17/10587 (2013.01) [B32B 17/10036 (2013.01); B32B 17/10761 (2013.01); B32B 17/10871 (2013.01); B60J 1/001 (2013.01); B32B 2250/02 (2013.01); B32B 2255/26 (2013.01); B32B 2307/412 (2013.01); B32B 2307/538 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An interlayer film for a laminated glass having a multitude of recesses on at least one surface,
the surface with the recesses having a ΔStr of 0.1 or less, where the ΔStr is an absolute value of a difference between a texture aspect ratio Str as measured in conformity with ISO 25178 and a texture aspect ratio Str as measured after heating at 100° C. for 15 minutes,
the surface with the recesses having the texture aspect ratio Str of 0.04 or lower as measured in conformity with ISO 25178,
the surface with the recesses having a ten-point average roughness Rz of 10 μm or more and 50 μm or less as measured in conformity with JIS B 0601(1994), and
the recesses having a groove shape with a continuous bottom.