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公开(公告)号：US20130266281A1
公开(公告)日：2013-10-10
申请号：US13754985
申请日：2013-01-31
Applicant: FURUKAWA ELECTRIC CO., LTD
Inventor： Hiroki TANAKA , Yasuo Nakajima , Kouji Mochizuki , Yoshihiro Arashitani
IPC: G02B6/02
CPC classification number: G02B6/02395 , G02B6/4482
Abstract: The present invention provides a colored coated optical fiber which hardly has an increase in transmission loss even when immersed in water. A colored coated optical fiber according to one embodiment of the present invention includes a glass optical fiber, a primary coating layer covering the glass optical fiber, a secondary coating layer covering the primary coating layer, and a colored layer covering the secondary coating layer. A ratio of a thermal expansion coefficient of a laminate including the secondary coating layer and the colored layer covering the secondary coating layer to that of the secondary coating layer is 0.98 or more and 1.03 or less. A ratio of a glass transition temperature based on a dynamic viscoelasticity within a temperature range from −100° C. to 150° C. of the laminate to that of the secondary coating layer is 0.96 or more and 1.03 or less.
Abstract translation: 本发明提供一种着色涂层光纤，即使在浸入水中也难以增加传输损耗。 根据本发明的一个实施方案的着色涂层光纤包括玻璃光纤，覆盖玻璃光纤的主要涂层，覆盖第一涂层的二次涂覆层和覆盖第二涂层的着色层。 包含第二被覆层和覆盖第二被覆层的着色层的层叠体的热膨胀系数与第二被覆层的热膨胀系数的比率为0.98以上且1.03以下。 基于层压体的-100℃至150℃的温度范围内的基于动态粘弹性的玻璃化转变温度与二次涂层的比例为0.96以上且1.03以下。
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公开(公告)号：US20220025133A1
公开(公告)日：2022-01-27
申请号：US17483971
申请日：2021-09-24
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Yukihiro IKURA , Mayu SATAKE , Suzune ITO , Yasuo NAKAJIMA , Kenichi SUYAMA , Jae Kyung KIM , Hiroki TANAKA , Isao TOMOMATSU
Abstract: An organic fiber-reinforced resin formed body that contains a resin and a cellulose fiber, wherein the resin formed body has a density of 0.65 g/cm3 or less, and a method for producing the same.
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3.发明申请公开(公告)号：US20190285823A1
公开(公告)日：2019-09-19
申请号：US16428739
申请日：2019-05-31
Applicant: Furukawa Electric Co., Ltd.
Inventor： Hiroki TANAKA , Kenji YOKOMIZO , Tomohiro ISHIMURA , Yutaka HOSHINO , Masaki IWAMA , Eisuke OTANI , Shunichi MATSUSHITA , Yoshihiro ARASHITANI , Takeshi YAGI
IPC: G02B6/44
Abstract: A method for manufacturing an intermittent bonding type optical fiber ribbon which is capable of forming non-connection portions and intermittent connection portions between adjacent coated optical fibers formed into an optical fiber ribbon by performing a laser processing for the ribbon through irradiation with a pulse laser light, thereby making it possible to rapidly form the intermittent connection portions and the non-connection portions while maintaining high linear velocity of the coated optical fiber. The non-connection portions and the intermittent connection portions are formed in the obtained intermittent bonding type optical fiber ribbon through the irradiation with the pulse laser light, so the intermittent bonding type optical fiber ribbon becomes the intermittent bonding type optical fiber ribbon, which is capable of securing operability during collective connection and surely being subjected to an intermediate branching without damaging cable characteristics during high density mounting.
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公开(公告)号：US20170131511A1
公开(公告)日：2017-05-11
申请号：US15405770
申请日：2017-01-13
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Hiroki TANAKA , Minoru KASAHARA , Junpei WATANABE , Kenichi SUYAMA , Yoshihiro ARASHITANI
CPC classification number: G02B6/02395 , C03C25/1065 , C03C25/24 , C03C25/475 , G02B6/44 , G02B6/4403 , G02B6/4482
Abstract: The present invention provides a two-layer structure colored optical fiber which includes a colored secondary coating layer improved in collectability and separability. The two-layer structure colored optical fiber in an embodiment of the present invention includes a glass optical fiber, a primary coating layer coating the glass optical fiber, and a colored secondary coating layer coating the primary coating layer. The secondary coating layer has such characteristics that a surface cure percentage is 99% or more at an infrared absorption peak of a wave number of 1407 cm−1 and a surface kinetic friction force in Knot Test is less than 0.075 N.
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公开(公告)号：US20140301704A1
公开(公告)日：2014-10-09
申请号：US14309380
申请日：2014-06-19
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Hiroki TANAKA , Minoru SAITO , Minoru KASAHARA , Yasuo NAKAJIMA , Yoshihiro ARASHITANI
CPC classification number: G02B6/02395 , C03C25/1065 , C03C25/285 , G02B6/4403 , G02B6/4409
Abstract: A colored optical fiber including a glass optical fiber; a primary coating layer that covers the glass optical fiber; a secondary coating layer that covers the primary coating layer; and a colored layer that coats the secondary coating layer. The relaxation modulus after 24 hours at 60° C. of of the layers coated is 140 MPa or less.
Abstract translation: 包括玻璃光纤的彩色光纤; 覆盖玻璃光纤的主要涂层; 覆盖第一涂层的二次涂层; 以及涂覆第二涂层的着色层。 所涂层的60℃下24小时后的松弛模量为140MPa以下。
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Patent Agency Ranking
6.发明申请公开(公告)号：US20220010113A1
公开(公告)日：2022-01-13
申请号：US17484054
申请日：2021-09-24
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Yukihiro IKURA , Mayu SATAKE , Suzune ITO , Yasuo NAKAJIMA , Kenichi SUYAMA , Jae Kyung KIM , Hiroki TANAKA , Isao TOMOMATSU
Abstract: A cellulose fiber-reinforced polypropylene resin formed body that is a resin formed body having respective diffraction peaks observed at positions of a scattering vector s of 1.61±0.1 nm−1, 1.92±0.1 nm−1, and 3.86±0.1 nm−1 in a wide-angle X-ray diffraction measurement, and is characterized by having ΔT calculated by the following formula (1) of 40.0° C. or more; and a cellulose fiber-reinforced polypropylene resin formed body that is a resin formed body having the above diffraction peaks and is characterized by having ΔTm and ΔTc expressed by the following formulae (2) and (3) and satisfying ΔTm
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公开(公告)号：US20210198463A1
公开(公告)日：2021-07-01
申请号：US17201674
申请日：2021-03-15
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Yukihiro IKURA , Suzune ITO , Yasuo NAKAJIMA , Kenichi SUYAMA , Jae Kyung KIM , Hiroki TANAKA , Isao TOMOMATSU
Abstract: A resin formed body obtained from a resin composition that contains a polypropylene resin and a cellulose fiber, the polypropylene resin partially containing an acid modified polypropylene resin, wherein the resin formed body has a diffraction peak derived from a polypropylene α-crystal (040) plane at a position of a scattering vector s of 1.92±0.1 nm−1, a diffraction peak derived from a polypropylene β-crystal (300) plane at a position of a scattering vector s of 1.83±0.1 nm−1, and a diffraction peak derived from a cellulose Iβ type crystal (004) plane at a position of a scattering vector s of 3.86±0.1 nm−1, observed in a wide-angle X-ray diffraction measurement, and wherein an orientation degree of the cellulose fiber in the resin formed body is larger than 0.1 and less than 0.8.
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公开(公告)号：US20180282209A1
公开(公告)日：2018-10-04
申请号：US16001985
申请日：2018-06-07
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Zyunpei WATANABE , Hiroki TANAKA , Kenichi SUYAMA , Yoshihiro ARASHITANI
Abstract: A bare optical fiber manufacturing method includes applying an ultraviolet curable resin applied around an optical fiber; and irradiating the ultraviolet curable resin with ultraviolet light emitted from semiconductor ultraviolet light emitting elements, by use of an ultraviolet irradiation device having plural ultraviolet irradiation units each having plural positions where the ultraviolet light is emitted toward the ultraviolet curable resin, the plural positions being arranged on the same circle, the plural ultraviolet irradiation units being arranged in a traveling direction of the optical fiber such that the optical fiber passes centers of the circles, at least two of the plural ultraviolet irradiation units being differently arranged with respect to circumferential direction angles thereof around an axis that is the traveling direction of the optical fiber.
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公开(公告)号：US20170107145A1
公开(公告)日：2017-04-20
申请号：US15390131
申请日：2016-12-23
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Kenichi SUYAMA , Yoshihiro ARASHITANI , Hiroki TANAKA , Minoru KASAHARA , Kazuyoshi AKIZUKI
Abstract: A method of producing an optical fiber, containing: (a) a resin application step of applying an ultraviolet curable resin, onto an outer circumference of an optical fiber; (b) a heating step of heating the ultraviolet curable resin; and (c) a light irradiation step of irradiating the ultraviolet curable resin with ultraviolet light emitted from a semiconductor light emitting element, in a state in which the ultraviolet curable resin is heated, to cure the ultraviolet curable resin into a coating resin.
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公开(公告)号：US20230159714A1
公开(公告)日：2023-05-25
申请号：US18095929
申请日：2023-01-11
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Mayu SATAKE , Yukihiro IKURA , Suzune ITO , Yasuo NAKAJIMA , Kenichi SUYAMA , Hiroki TANAKA , Isao TOMOMATSU , Yui HAMURO
IPC: C08J5/04
CPC classification number: C08J5/045 , C08J2401/02 , C08J2323/12
Abstract: A cellulose fiber reinforced resin formed body, which is obtained by molding a cellulose fiber reinforced resin composition containing a polypropylene resin, an alkoxysilane-modified polypropylene resin, and a cellulose fiber; and
a method of producing the same.
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