Other

Teijin Limited

Nissan Motor Company Limited

Tanaka Kikinzoku Kogyo K.k.

Shinji Owaki

Toshimasa Kuroda

Hiroshi Tabata

Susumu Shimizu

Kinya Kumazawa

Akio Sakihara

Makoto Asano

Osamu Wada

Akio Kimura

Mie Yoshimura

Koichi Iohara

Kozo Seimitsu

A flat optical-interference-functional fiber formed by alternately laminating individually independent layers of polymers having different refractive indices in parallel with the major axis direction of its flat cross section, characterized in that (a) the ratio (SP ratio) of the solubility parameter value (SP ) of high refractive index polymer to the solubility parameter value (SP ) of low refractive index polymer is in the range of 0.8&lE;SP /SP &lE;1.1, and a fibrous structure using the fiber. According to the present invention, there are provided a fiber which has high color development intensity based on optical interference and forms clear color; and a fibrous structure thereof.

Fiber having optical interference function and use thereof

A fiber structure with a cross section having x-axis and y-axis directions includes an alternate lamination including a first portion having a refractive index na and a thickness da and a second portion adjacent to the first portion and having a refractive index nb and a thickness db, wherein when 1.0&lE;na<1.8, 1.3&lE;nb&lE;1.8, and 1.01&lE;nb/na&lE;1.80, a primary peak wavelength &lgr;1 which is equal to 2(nada&plus;nbdb) is given by &lgr;1&gE;0.78 or 1.6 (&mgr;m).

Fiber structure, cloths using same, and textile goods

A fiber with a cross section having x-axis and y-axis directions includes an alternate lamination including a predetermined number of a first portion and a second portion adjacent thereto, which have different optical characteristics, and a clad arranged around the alternate lamination.

Fibers with optical function

A composite polymer fiber is produced employing at least two polymer compounds according to a process for producing a composite polymer fiber including the steps of supplying at least two polymer compounds; forming a belt flow by arranging alternately unmixed strips of the polymer compounds supplied; and injecting the belt flow after it is compressed such that the thickness of the belt flow may be longer than the width thereof and that multiple layers of the polymer compounds may be parallel to the longer axis of the fiber. According to this process, there is obtained a fiber having a multilayered structure, in which the thickness of each layer can be controlled with optical accuracy since the multilayered structure is formed in one step, and also having a rectangular cross section in which each layer in the fabric is oriented parallel to the longer axis of the fiber, so that the layers can be easily oriented, when woven into a fabric, in such a direction as to obtain high-intensity coherent beams of light.

Spinneret for producing composite polymer fibers

Polyester filament yarn and process for producing same, and fabric

A woven or knitted polyester multifilament fabric having a silk-like appearance and touch, comprised of polyester multifilament yarns containing one or more types of porous polyester filaments each having an irregular cross-sectional profile, for example, C-, L- or V-shaped profile, and numerous fine linear concave parts formed on the peripheral surface thereof and extending along the longitudinal axis of each individual filaments, the fabric being characterized by a group of said concave parts corresponding to a half of the entire number of the concave parts, each having a length of 5 microns or more and a ratio of the length to the width of each concave part of 5 or more.

Woven or knitted polyester multifilament fabric

Growing community of inventors

Ichinomiya, Japan

Shinji Owaki