US 11,920,015 B2
Web, stampable sheet, and expansion molded product
Yutaka Araki, Chiba (JP); Seiji Hanatani, Chiba (JP); Tadaaki Yasumi, Chiba (JP); Tsutomu Takagi, Kakamigahara (JP); and Atsuhiro Hattori, Aichi (JP)
Assigned to K-PLASHEET CORPORATION, Chiba (JP); and TOYOTA BOSHOKU KABUSHIKI KAISHA, Kariya (JP)
Appl. No. 16/971,682
Filed by K-PLASHEET CORPORATION, Chiba (JP); and TOYOTA BOSHOKU KABUSHIKI KAISHA, Kariya (JP)
PCT Filed Dec. 5, 2019, PCT No. PCT/JP2019/047711
§ 371(c)(1), (2) Date Aug. 21, 2020,
PCT Pub. No. WO2020/121945, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 2018-233906 (JP), filed on Dec. 13, 2018.
Prior Publication US 2020/0407527 A1, Dec. 31, 2020
Int. Cl. C08J 9/00 (2006.01); C08J 5/24 (2006.01); C08J 9/232 (2006.01); D04H 1/413 (2012.01); D04H 3/002 (2012.01); D04H 3/004 (2012.01); D04H 3/011 (2012.01); D04H 3/015 (2012.01)
CPC C08J 9/0085 (2013.01) [C08J 5/247 (2021.05); C08J 5/249 (2021.05); C08J 9/232 (2013.01); D04H 1/413 (2013.01); D04H 3/002 (2013.01); D04H 3/004 (2013.01); D04H 3/011 (2013.01); D04H 3/015 (2013.01); C08J 2323/12 (2013.01); C08J 2467/00 (2013.01)] 12 Claims
 
1. A web comprising a reinforcing fiber containing an inorganic fiber and an organic fiber, a thermoplastic resin, and a thermal expandable particle, wherein
a proportion of the reinforcing fiber is 20 mass % or more and 55 mass % or less based on a total amount of the reinforcing fiber and the thermoplastic resin;
a proportion of the organic fiber is 25 mass % or more and 77 mass % or less based on a total amount of the organic fiber and the inorganic fiber;
the reinforcing fiber has an average length of 8 mm or more;
the organic fiber has a breaking elongation of 15% or more;
the inorganic fiber is one or more selected from the group consisting of glass fibers and carbon fibers;
the organic fiber is one or more selected from the group consisting of polyester fibers and fluororesin fibers; and
the thermoplastic resin is one or more selected from polyolefin-based resins.