公开(公告)号：US20240045162A1

公开(公告)日：2024-02-08

申请号：US18257630

申请日：2021-12-08

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Toshihisa SATO ,  Takashi FUJII

IPC: G02B6/44

CPC classification number: G02B6/4403

Abstract: Provided is an intermittently coupled optical fiber ribbon in which a bonded portion in which adjacent optical fibers are bonded by an adhesive resin and a non-bonded portion are intermittently provided in a longitudinal direction. The bonded portion is provided on one side of the optical fiber ribbon. A part of the bonded portion protrudes further than a tangent line passing through surfaces of the adjacent optical fibers on the one side. In the longitudinal direction, at least one of longitudinal end portions of the bonded portion has a larger protrusion height than a central portion of the bonded portion. The adhesive resin has a composite elastic modulus of 0.5 GPa or more and 6.0 or less at 23° C.

公开(公告)号：US20190121044A1

公开(公告)日：2019-04-25

申请号：US16087190

申请日：2017-03-22

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Hiroki ISHIKAWA ,  Toshihisa SATO ,  Fumiaki SATO ,  Masahiko ISHIKAWA

IPC: G02B6/44 ,  B29D11/00

Abstract: In a step of intermittently applying an adhesive resin, while rotating an adhesive resin conveying roller formed by alternately laminating a disk-like fiber roller installed in a pass line, a disk-like partition plate having a diameter larger than that of the fiber roller and including a gap portion for holding the adhesive resin in a part of the vicinity of a peripheral edge portion in a circumferential direction, the adhesive resin conveying roller is immersed in the adhesive resin, which is not cured, to hold the adhesive resin in the gap portion, and then the optical fibers are brought into contact with the partition plate such that the partition plate is sandwiched between the optical fibers in running, so as to intermittently apply the adhesive resin held in the gap portion to the optical fibers in a longitudinal direction.

公开(公告)号：US20230367088A1

公开(公告)日：2023-11-16

申请号：US18245587

申请日：2021-09-13

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Toshihisa SATO ,  Takashi FUJII

IPC: G02B6/44

CPC classification number: G02B6/4403

Abstract: An intermittently coupled-type optical fiber ribbon includes a plurality of optical fibers arranged in parallel and intermittently coupling portions formed by coupling parts between the adjacent optical fibers with a resin. In the coupling portions, the resin is provided on one side surface and the other side surface of the optical fiber ribbon. When an average of maximum values of thicknesses TF of the coupling portions on the one side surface is set as TFave and an outer diameter of each optical fiber is set as D, D/4≤TFave≤D/2. When an average of maximum values of thicknesses TB of the coupling portions on the other side surface is set as TBave, TBave

公开(公告)号：US20180282208A1

公开(公告)日：2018-10-04

申请号：US15942656

申请日：2018-04-02

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Toshihisa SATO ,  Takashi FUJII

IPC: C03C25/105 ,  G02B6/02 ,  C03C25/326

Abstract: A method for manufacturing an optical fiber comprises a coating step of forming a first layer consisting of a first curable resin composition containing a photopolymerization initiator and a second layer consisting of a second curable resin composition containing another photopolymerization initiator on the glass fiber, a first irradiation step of irradiating UV rays in a first wavelength range from a first UV light source toward the glass fiber, and a second irradiation step of irradiating UV rays in a range shorter in wavelength than the first wavelength range from a second UV light source toward the glass fiber.

公开(公告)号：US20170090135A1

公开(公告)日：2017-03-30

申请号：US15272620

申请日：2016-09-22

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Toshihisa SATO ,  Takashi FUJII

IPC: G02B6/44

CPC classification number: G02B6/4404 ,  G02B6/4403 ,  G02B6/4405 ,  G02B6/4409

Abstract: An optical fiber ribbon is disclosed. The optical fiber ribbon includes first and second optical fibers arranged in parallel, and at least one coupling member made of a resin material. The coupling member couples the first and second optical fibers by adhering the first and second optical fibers each other intermittently in a longitudinal direction of the first and second optical fibers. A breaking elongation of the resin material constituting the coupling member is equal to or more than 200% and equal to or less than 500%.