US 12,454,627 B2
Biodegradable laminated article and method for producing the same
Kensuke Murashima, Settsu (JP); Itsuki Kusakabe, Settsu (JP); Masayuki Fujita, Settsu (JP); and Yasunori Okada, Settsu (JP)
Assigned to KANEKA CORPORATION, Osaka (JP)
Appl. No. 18/569,700
Filed by KANEKA CORPORATION, Osaka (JP)
PCT Filed Jun. 10, 2022, PCT No. PCT/JP2022/023513
§ 371(c)(1), (2) Date Dec. 13, 2023,
PCT Pub. No. WO2022/264944, PCT Pub. Date Dec. 22, 2022.
Claims priority of application No. 2021-100014 (JP), filed on Jun. 16, 2021.
Prior Publication US 2024/0270998 A1, Aug. 15, 2024
Int. Cl. C09D 167/04 (2006.01); B32B 7/02 (2019.01); B32B 27/10 (2006.01); B32B 27/36 (2006.01); C08G 63/06 (2006.01)
CPC C09D 167/04 (2013.01) [B32B 7/02 (2013.01); B32B 27/10 (2013.01); B32B 27/36 (2013.01); C08G 63/06 (2013.01); B32B 2250/03 (2013.01); B32B 2307/7163 (2013.01); B32B 2307/718 (2013.01); B32B 2307/748 (2013.01); B32B 2553/00 (2013.01); C08G 2230/00 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A biodegradable laminated article, comprising:
a substrate layer;
a first thermoplastic resin (A1) layer located on one side of the substrate layer and comprising a polyhydroxyalkanoate resin; and
a second thermoplastic resin (A2) layer located on the other side of the substrate layer and comprising a polyhydroxyalkanoate resin, wherein
a weight per unit area of the first thermoplastic resin (A1) layer is from 10 to 200 g/m2, and
a weight per unit area of the second thermoplastic resin (A2) layer is from 0.1 to 5 g/m2.