US 11,981,787 B2
Laminated foam sheet
Shota Endo, Osaka (JP); Eiji Fukuyama, Osaka (JP); and Ayano Mori, Osaka (JP)
Assigned to SEKISUI KASEI CO., LTD., Osaka (JP)
Appl. No. 17/433,364
Filed by SEKISUI KASEI CO., LTD., Osaka (JP)
PCT Filed Mar. 25, 2020, PCT No. PCT/IB2020/052782
§ 371(c)(1), (2) Date Aug. 24, 2021,
PCT Pub. No. WO2020/194198, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 2019-064179 (JP), filed on Mar. 28, 2019.
Prior Publication US 2022/0145035 A1, May 12, 2022
Int. Cl. B32B 5/18 (2006.01); B32B 27/06 (2006.01); B32B 27/36 (2006.01); C08J 9/14 (2006.01)
CPC C08J 9/141 (2013.01) [B32B 5/18 (2013.01); B32B 27/065 (2013.01); B32B 27/36 (2013.01); B32B 2266/0264 (2013.01); B32B 2266/06 (2013.01); B32B 2307/538 (2013.01); B32B 2307/546 (2013.01); B32B 2307/7163 (2013.01); B32B 2307/732 (2013.01); C08J 2367/02 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A laminated expanded sheet comprising a laminate of
a resin expanded layer and
a resin non-expanded layer,
wherein said resin expanded layer is provided as an outermost layer,
said laminated expanded sheet has a bending strength of 5 MPa or more,
an arithmetic average roughness of a surface formed of said resin expanded layer is 3 μm or more and 6 μm or less,
a thickness of said laminated expanded sheet is 0.2 mm or more and 4 mm or less, and
a thickness of said resin non-expanded layer is 1 μm or more and 200 μm or less.