US 11,992,980 B2
Foamed resin molded article and method for manufacturing same
Masayuki Kito, Aichi (JP); Goro Takahashi, Aichi (JP); Toshihiro Suzuki, Aichi (JP); Yasuyuki Shimizu, Aichi (JP); and Kosuke Tamaki, Aichi (JP)
Assigned to TOYOTA BOSHOKU KABUSHIKI KAISHA, Aichi (JP)
Appl. No. 16/073,589
Filed by TOYOTA BOSHOKU KABUSHIKI KAISHA, Aichi (JP)
PCT Filed Mar. 10, 2017, PCT No. PCT/JP2017/009805
§ 371(c)(1), (2) Date Jul. 27, 2018,
PCT Pub. No. WO2017/155114, PCT Pub. Date Sep. 14, 2017.
Claims priority of application No. 2016-048815 (JP), filed on Mar. 11, 2016.
Prior Publication US 2019/0022903 A1, Jan. 24, 2019
Int. Cl. B29C 44/04 (2006.01); B29C 44/34 (2006.01); B29C 44/42 (2006.01); B29C 48/00 (2019.01); B29C 48/40 (2019.01); B29K 23/00 (2006.01); B29K 25/00 (2006.01); B29K 77/00 (2006.01); B29K 105/04 (2006.01); C08J 9/00 (2006.01); C08J 9/08 (2006.01); C08L 23/00 (2006.01); C08L 23/12 (2006.01); C08L 23/16 (2006.01); C08L 23/26 (2006.01); C08L 53/00 (2006.01); C08L 53/02 (2006.01); C08L 77/00 (2006.01); C08L 77/02 (2006.01); C08L 77/06 (2006.01)
CPC B29C 44/04 (2013.01) [B29C 44/3442 (2013.01); B29C 44/421 (2013.01); B29C 48/022 (2019.02); B29C 48/40 (2019.02); C08J 9/0061 (2013.01); C08J 9/08 (2013.01); C08L 23/00 (2013.01); C08L 23/12 (2013.01); C08L 23/16 (2013.01); C08L 23/26 (2013.01); C08L 53/00 (2013.01); C08L 53/02 (2013.01); C08L 77/00 (2013.01); C08L 77/02 (2013.01); C08L 77/06 (2013.01); B29K 2023/06 (2013.01); B29K 2023/12 (2013.01); B29K 2025/06 (2013.01); B29K 2077/10 (2013.01); B29K 2105/04 (2013.01); C08J 2201/03 (2013.01); C08J 2203/02 (2013.01); C08J 2323/12 (2013.01); C08J 2477/00 (2013.01); C08L 2203/14 (2013.01); C08L 2205/03 (2013.01); C08L 2205/035 (2013.01); C08L 2205/05 (2013.01); C08L 2205/22 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A foamed resin molded vehicle door trim base comprising an olefin-based resin composition containing an elastomer having a reactive group, an olefin resin and a polyamide resin, wherein
when a total of the elastomer having a reactive group, the olefin resin and polyamide resin contained in the olefin-based resin composition is taken as 100% by mass, a content of the elastomer having a reactive group is in a range of from 0.2 to 55% by mass, a content of the olefin resin is in a range of from 50 to 99.5% by mass, and a content the polyamide resin is in a range of from 0.3 to 60% by mass,
the elastomer having a reactive group is at least one selected from maleic anhydride-modified ethylene-propylene copolymer, a maleic anhydride-modified ethylene-1-butene copolymer, a maleic anhydride-modified ethylene-1-hexene copolymer, a maleic anhydride-modified ethylene-1-octene copolymer, and a maleic anhydride-modified propylene-1-butene copolymer,
the olefin resin is a polymer containing a structural unit derived from propylene,
the polyamide resin is at least one selected from polyamide 11 and polyamide 12,
the olefin-based resin composition has a continuous phase containing the olefin resin and a dispersed phase dispersed in the continuous phase and containing the polyamide resin,
the dispersed phase contains a melt-kneaded product of the polyamide resin and the elastomer having a reactive group that reacts with the polyamide resin, and
an expansion ratio of the foamed resin molded vehicle door trim base is 1.5 to 2.4 times.