公开(公告)号：US20230096613A1

公开(公告)日：2023-03-30

申请号：US17758639

申请日：2020-12-23

Applicant: KURARAY CO., LTD.

Inventor： Tomoki SAKAI ,  Takashi KATAYAMA ,  Hiroyuki KAWAI ,  Masashi NISHIDA ,  Tsugumi YOSHIDA

IPC: D06M11/83 ,  D02G3/04

Abstract: A metal-covered liquid crystal polyester multifilament, comprising: two or more metal-covered liquid crystal polyester monofilaments in which a surface of each liquid crystal polyester monofilament is covered with a metal having a thickness of 0.1 to 20 μm, wherein in a cross-sectional photograph measured by X-ray CT, a percentage of a number of stuck fibers in which the two or more metal-covered liquid crystal polyester monofilaments are stuck is 75% or less with respect to a total number of fibers.

公开(公告)号：US20230075020A1

公开(公告)日：2023-03-09

申请号：US17799724

申请日：2021-02-04

Applicant: KURARAY CO., LTD.

Inventor： Kazumasa KUSUDO ,  Hiroyuki KAWAI ,  Takashi KATAYAMA ,  Shuhei YORIMITSU ,  Noriko KAWASHIMA ,  Daisuke KONISHI ,  Naoyuki YAGUCHI ,  Kenichi KOJIMA

IPC: C08J7/04 ,  B29C48/00 ,  B29C48/50 ,  C09D1/00

Abstract: To provide a waterproof sheet for civil engineering, having sufficient strength and elongation even at a low temperature of about −10° C. and having excellent adhesiveness to a structure such as a tunnel. Disclosed is a waterproof sheet for civil engineering, which has a layer (A) including a composition containing an ethylene-vinyl acetate copolymer (a1) and a thermoplastic resin (a2) other than the ethylene-vinyl acetate copolymer (a1), and a silica-containing layer containing silica, wherein the content of the ethylene-vinyl acetate copolymer (a1) in the composition is 30 to 95% by mass, the content of the thermoplastic resin (a2) is 5 to 70% by mass, and the absolute value of the difference between the SP value of the ethylene-vinyl acetate copolymer (a1) and the SP value of the thermoplastic resin (a2) is less than 0.70 (cal/cm3)1/2.