Toray Industries, Inc.

Nippon Steel Engineering Co., Ltd.

Nippon Steel & Sumikin Engineering Co., Ltd.

Yuki Ninomiya

Hiroshi Tsuchikura

Koji Nishimoto

Koji Sugano

Atsushi Watanabe

Masaru Harada

Shinsuke Yamazaki

Yoshinao Konishi

Hideji Nakamura

Tadayuki Noro

Masato Sekiyama

Hiroshi Suyama

A sliding seismic isolation device includes a structure fixation plate having a first sliding surface and a metallic slider having a second sliding surface contacting the first sliding surface. A friction member composed of a single-layer fabric is attached to the first sliding surface, the second sliding surface, or both of the first sliding surface and the second sliding surface. One of a warp and a weft is formed of multiple plied yarns into which high-strength fibers and PTFE fibers are twisted together and the other of the warp and the weft is formed of multiple high-strength fibers in the single-layer fabric. The single-layer fabric has a twill weave and is woven such that the plied yarns of the one forming the single-layer fabric are exposed at a surface opposite from the attachment side of the friction member more than the high-strength fibers of the other forming the single-layer fabric.

Sliding seismic isolation device

A wear-resistant cloth has high wear resistance and is capable of exerting a long-term sliding property even under high-load environment as compared with conventional cloths. A wear-resistant multilayer fabric includes a sliding fabric and a base fabric. The sliding fabric includes polytetrafluoroethylene fibers A, the base fabric includes fibers B having creep ratio in a standard state and under 20% load of breaking strength, the creep ratio being lower than creep ratio of the polytetrafluoroethylene fibers, and the sliding fabric and the base fabric have mutual warps and/or wefts that are mutually entangled for bonding.

Wear-resistant multilayer fabrics

Provided is a high-performance sliding seismic isolation device with a slider that realizes a contact pressure of 60 MPa. The device includes an upper shoeand a lower shoe () having sliding surfacesandwith curvatures, respectively; and a columnar steel slider () disposed between the upper shoe () and the lower shoe (), the slider having an upper surfaceand a lower surfacethat are in contact with the upper and lower shoes, respectively, and have curvatures. The upper surfaceand the lower surfaceof the slider () have double-woven fabric layers () and (), respectively, each double-woven fabric layer containing PTFE fibers and fibers with higher tensile strength than that of the PTFE fibers, and the PTFE fibers being arranged on the sides of the sliding surfacesandof the upper shoe () and the lower shoe ().

Growing community of inventors

Shiga, Japan

Yuki Ninomiya