Toray Industries, Inc.

Nippon Steel & Sumikin Engineering Co., Ltd.

Koji Sugano

Hiroshi Tsuchikura

Yuhei Maeda

Yuki Ninomiya

Koji Nishimoto

Katsutoshi Ando

Katsuhiko Mochizuki

Tomoko Takano

Takeshi Sugimoto

Hideaki Kunisada

Hideji Nakamura

Goro Kondo

Katsuhiko Toray Nakatogari Mochizuki

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 ().

Sliding seismic isolation device

A polyphenylene sulfide fiber has an amount of heat of crystallization measured by DSC is 10 J/g or more and the degree of shrinkage on dry heating of 150&#xb0; C.&#xd7;30 minutes is 20% or less. A method produces a densified wet-laid nonwoven fabric by subjecting paper produced in a papermaking process and containing 60 to 100% by mass of a polyphenylene sulfide fiber having an amount of heat of crystallization of 10 J/g or more and an amount of heat of crystallization of the wet-laid nonwoven fabric before heating-pressurizing treatments is 5 J/g or more to heating-pressurizing treatment at a temperature that is not lower than the glass transition temperature and not higher than the melting point of the polyphenylene sulfide fiber.

Polyphenylene sulfide fiber, method for producing the same, wet-laid nonwoven fabric, and method for producing wet-laid nonwoven fabric

The present invention offers polypropylene terephthalate textured yarn which has little dyeing unevenness or fibrillation, and is outstanding in its product quality, by carrying out texturing at the same time as drawing under specified conditions using polypropylene undrawn yarn; together with a method for the production thereof.

Polypropylene terephthalate twisted yarn and method for producing the same

A nonwoven fabric comprising thermoplastic resin fiber bundles, wherein numerically at least about 50% of all the fibers present are bonded to each other in the form of fiber bundles. The fiber bundles are arranged along substantially one direction.

Nonwoven fabric, filter medium and process for producing the same

Growing community of inventors

Otsu, Japan

Koji Sugano