KB SEIREN LTD

Sabae, Japan

KB SEIREN LTD

Sabae, Japan

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Patent
KB Seiren Ltd. | Date: 2017-02-08

The invention provides a fiber-reinforced composite material lightweight and excellent in impact resistance, damping nature, and shatterproof nature without impairing stiffness. It is a fiber-reinforced composite material including a fibrous structure (1) composed of only an inorganic fiber and a fibrous structure (2) comprising a wholly aromatic polyester fiber which are stacked together and are impregnated with a resin, wherein an outermost layer of the fiber-reinforced composite material is the fibrous structure (1) composed of only an inorganic fiber and at least one fibrous structure (2) comprising a wholly aromatic polyester fiber is present in a layer other than the center layer.


Patent
KB Seiren Ltd. | Date: 2017-06-14

Provided is bead fiber with which sufficient air volume can be infused for making a high-performance bicycle tire, which has superior workability that does not require drying of the bead fibers when covering the bead fibers with rubber, and which is effective in preventing rim detachment. A high-performance bicycle tire can be obtained by using this tire bead fiber. The tire bead fiber is characterized by being formed using wholly aromatic polyester fiber with a modulus of elasticity of 800 cN/dt or greater.


Patent
Kb Seiren Ltd. | Date: 2011-03-02

A speaker having a diaphragm made of a woven/knitted fabric containing a conductive fiber and a non-conductive fiber, where the fabric has a woven structure or a knitted structure of the non-conductive fiber, and a continuous wiring forming a coil of the conductive fiber.


A screen gauze formed of a core-sheath composite monofilament comprising the core 1 formed by a fiber-forming polymer 4 containing a material 3 having a property of absorbing light at wavelengths of 350 nm to 450 nm and the sheath 2 formed by a fiber-forming polymer 5, the core-sheath composite monofilament having average reflectance of 15% or less to light at wavelengths of 350 nm to 450 nm, and a screen gauze using the same. The monofilament is free from strength reduction, scum generation and abrasion of related parts such as reed, and makes no difficulty in ink-release, and requires no dyeing process and thus no additional cost therefor.


Patent
Kb Seiren Ltd. | Date: 2015-03-24

The invention provides a fiber-reinforced composite material lightweight and excellent in impact resistance, damping nature, and shatterproof nature without impairing stiffness. It is a fiber-reinforced composite material including a fibrous structure (1) composed of only an inorganic fiber and a fibrous structure (2) comprising a wholly aromatic polyester fiber which are stacked together and are impregnated with a resin, wherein an outermost layer of the fiber-reinforced composite material is the fibrous structure (1) composed of only an inorganic fiber and at least one fibrous structure (2) comprising a wholly aromatic polyester fiber is present in a layer other than the center layer.


Patent
KB Seiren Ltd. | Date: 2011-07-20

A composite fiber for stockings which has water-absorbing properties, hygroscopicity, antistatic properties, crimp properties, and cool touch is obtained without sacrificing productivity, transparency, and soft touch. The composite fiber for stockings is an eccentric composite fiber comprising a fiber-forming resin (B) and a polyether block amide copolymer (A). The fiber is characterized in that the polyether block amide copolymer (A), in a cross section of the fiber, is exposed in the surface at an angle of 5-90 , and the fiber has 1-10 filaments and a fineness of 1-55 dtex. The fiber especially preferably has a percentage crimp of 10% or higher.


Patent
Kb Seiren Ltd. | Date: 2011-03-16

A conjugated conductive fiber including a non-conductive layer and a conductive layer, in which: the non-conductive layer accounts for at least 70% of a surface of the fiber; the non-conductive layer is a polyester obtained by copolymerizing a metal sulfonate group-containing isophthalic acid and a polyalkylene glycol; and the conductive layer is a thermoplastic polymer containing titanium oxide particles each having a conductive coating film. The conjugated conductive fiber provides a polyester-based conjugated yarn high in antistatic performance and easy to handle, which can be dyed under normal pressure with improved color developing property after dying.


Patent
KB Seiren Ltd. | Date: 2013-07-11

A core-sheath conjugated fiber has excellent moisture-absorption properties, antistatic properties, and cool feeling by contact, as well as being less prone to post process trouble even when the fiber is interknitted with polyurethane or polyethylene terephthalate. The fiber includes a core portion and a sheath portion. The core portion is not exposed through the surface of the fiber, and is composed of a polyether block amide copolymer represented by Formula (1) having a hard segment composed of nylon 6. The sheath portion is composed of a nylon-6 resin, and the area ratio of the core portion to the sheath portion in a transverse section of the fiber is 3/1 to 1/5. PA represents a polyamide unit (hard segment); PE represents a polyether unit (soft segment); and n represents the number of repeating units.


Patent
KB Seiren Ltd. | Date: 2015-05-20

The present invention provides a conjugated fiber that has excellent moisture-absorption properties, excellent antistatic properties, and excellent cool feeling by contact as well as being less prone to troubles in a post process even in the case where the fiber is interknitted with polyurethane or polyethylene terephthalate. The conjugated fiber is a core-sheath conjugated fiber, including: a core portion; and a sheath portion, wherein the core portion is not exposed through the surface of the core-sheath conjugated fiber, the core portion is composed of a polyether block amide copolymer represented by Formula (1), the polyether block amide copolymer having a hard segment (in the following formula) composed of nylon 6, the sheath portion is composed of a nylon-6 resin, and the area ratio of the core portion to the sheath portion in a transverse section of the core-sheath conjugated fiber is 3/1 to 1/5.


Trademark
Kb Seiren Ltd | Date: 2015-06-11

Non-metal gaskets for electromagnetic interference shield; non-metal gaskets used in refining food and beverage; non-metal gaskets used in packing for automotive, pharmaceuticals and agriculture industries; insulating tape and band; electrical insulating fabrics; electrical insulating felt; insulating paper for electrical capacitors; plastic fibers, not for textile use; plastic soldering threads, not for textile use; semi-processed plastics; semi-processed plastic materials made of resin-impregnated polyphenylene sulfide fiber fabric. Chemical fibers for textile use; plastic fibers for textile use; synthetic fibers for textile use; ropes, not of metal; fishing nets. Chemical fiber yarn for textile use. Polyphenylene sulfide fiber fabrics for textile use; polyphenylene sulfide fiber knitted fabrics for textile use; non-woven textile fabrics made of polyphenylene sulfide fiber; filtering materials made of textile especially, polyphenylene sulfide fiber, namely, non-woven fabrics, knitted fabrics, woven fabrics.

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