公开(公告)号：US20150185428A1

公开(公告)日：2015-07-02

申请号：US14419972

申请日：2013-07-29

Applicant: FUJIKURA LTD.

Inventor： Naosuke Tani ,  Yasushi Kato ,  Naoki Okada ,  Satoru Shiobara ,  Masashi Ohno

IPC: G02B6/44 ,  G02B1/04

CPC classification number: G02B6/441 ,  G02B1/045 ,  Y10T428/2929

Abstract: Provided is a binder fiber for an optical fiber unit including a flat sea-island color composite fiber, in which the flat sea-island color composite fiber satisfies the following (1) to (3): (1) a sea component of the flat sea-island color composite fiber has a melting start temperature of 100° C. or higher and a melting peak temperature of 120° C. to 150° C.; (2) the flat sea-island color composite fiber has a width of 0.5 to 3.0 mm and a thickness of 0.15 mm or less; and (3) the flat sea-island color composite fiber has a thermal shrinkage rate of 1.0% or lower after being heated at 100° C. for 3 hours. With the binder fiber, the color developing properties are improved, the shape retaining properties of optical fiber cores are maintained, the optical fiber cores are not compressed, and there is no adhesion with another adjacent binder fiber or the optical fiber cores.

Abstract translation: 本发明提供一种包含扁平海岛色复合纤维的扁平海岛色复合纤维的光纤单元用粘合纤维，其中，平坦海岛色复合纤维满​​足以下（1）〜（3）：（1）扁平海岛色复合纤维的海成分 海岛色复合纤维的熔融开始温度为100℃以上，熔融峰温度为120℃〜150℃。 （2）扁平海岛色复合纤维的宽度为0.5〜3.0mm，厚度为0.15mm以下; （3）扁平海岛色复合纤维在100℃加热3小时后的热收缩率为1.0％以下。 利用粘合纤维，改善了显色性，保持了光纤芯的形状保持性，光纤芯不被压缩，并且与另一个相邻的粘合剂纤维或光纤芯不具有附着力。

公开(公告)号：US10151898B2

公开(公告)日：2018-12-11

申请号：US15037840

申请日：2014-03-24

Applicant: FUJIKURA LTD.

Inventor： Tomoaki Kaji ,  Daiki Takeda ,  Satoru Shiobara ,  Masayoshi Yamanaka

IPC: G02B6/44 ,  B29C63/02 ,  B29C63/10 ,  B29D11/00 ,  B29C53/72 ,  B29C53/58 ,  B29C63/08 ,  H01B13/26 ,  B29L11/00

Abstract: A former including: a guide pipe guiding an optical fiber bundle; a tape forming section forming a press-wrapping tape from a strip shape into a helical shape, while guiding the press-wrapping tape along a feed direction, the tape forming section including a curved section gradually curving the strip shaped press-wrapping tape while guiding the press-wrapping tape along the feed direction, and a helical section that is a helical tube shaped location further to a downstream side than a position where two edges of the curved section intersect with each other, the helical section causing two end portions of the press-wrapping tape that has been curved with the curved section to overlap and forming the press-wrapping tape into a helical shape, while guiding the press-wrapping tape along the feed direction, and gradually narrowing an external diameter of the helical shaped press-wrapping tape.

公开(公告)号：US20150139593A1

公开(公告)日：2015-05-21

申请号：US14407165

申请日：2013-04-04

Applicant: FUJIKURA LTD.

Inventor： Satoru Shiobara ,  Naoki Okada ,  Takao Fukute

IPC: G02B6/44

CPC classification number: G02B6/4401 ,  G02B6/4402 ,  G02B6/4433 ,  G02B6/4495

Abstract: An optical fiber cable includes an optical fiber core wire; a pair of tension members extending parallel to each other in an extension direction of the optical fiber core wire, sandwiching the optical fiber core wire; and a rectangular jacket covering the optical fiber core wire and the pair of tension members, and in a cross-section orthogonal to the extension direction, having a major axis in a facing direction of the tension members and a minor axis in a direction orthogonal to the facing direction, wherein each of the tension members is glass fiber reinforced plastic having a diameter in a range of 0.7 mm or more and 1 mm or less, and the jacket has a friction coefficient of 0.3 or less, the major axis of 4 mm or less, and the minor axis of 2.8 mm or less.

Abstract translation: 光缆包括光纤芯线; 一对张力构件，其在所述光纤芯线的延伸方向上彼此平行地延伸，夹持所述光纤芯线; 以及覆盖所述光纤芯线和所述一对张力构件的矩形护套，并且在与所述延伸方向正交的横截面中具有沿所述张紧构件的相对方向的长轴和在与所述拉伸方向正交的方向上的短轴 面向的方向，其中每个张力构件是直径在0.7mm以上且1mm以下的玻璃纤维增​​强塑料，并且护套的摩擦系数为0.3以下，长轴为4mm 以下，短轴为2.8mm以下。

公开(公告)号：US10087027B2

公开(公告)日：2018-10-02

申请号：US14915480

申请日：2014-09-24

Applicant: FUJIKURA LTD.

Inventor： Daiki Takeda ,  Masashi Ohno ,  Satoru Shiobara ,  Masayoshi Yamanaka ,  Naoki Okada

IPC: B65H21/00

Abstract: To make a tape length that can be supplied at one time long, and to make it possible to directly supply a tape from a record wound tape.A tape supplying method of this invention includes: connecting a tape end to an outer side of one record wound tape of a first record wound tape and a second record wound tape and a tape end to an inner side of another record wound tape, by matching a surface and a rear surface of the tapes; and after the connecting, supplying a tape of the first record wound tape and the second record wound tape from a tape end of the first record wound tape to an opposite side of a side that has been connected to the second record wound tape.

公开(公告)号：US10061096B2

公开(公告)日：2018-08-28

申请号：US15116889

申请日：2014-10-03

Applicant: FUJIKURA LTD.

Inventor： Daiki Takeda ,  Tomoaki Kaji ,  Satoru Shiobara ,  Masayoshi Yamanaka ,  Naoki Okada

IPC: G02B6/44

CPC classification number: G02B6/4433 ,  G02B6/449 ,  G02B6/4497

Abstract: [Problem] The thickness on a ripcord in a circular optical cable is reduced, to improve workability.[Solution] An optical cable of the present invention includes: an optical fiber unit including optical fibers; a sheath, having a circular external form, configured to house the optical fiber unit in a housing portion; and two strength members embedded in the sheath; and two rip cords, wherein when a direction of connecting the two strength members sandwiching the housing portion is a first direction and a direction intersecting the first direction is a second direction, in a cross section of the optical cable, a cross-sectional shape of the housing portion has a dimension in the second direction greater than that in the first direction, and the two rip cords is disposed to sandwich the optical fiber unit such that a direction of connecting the two rip cords is in the second direction, in the cross section of the optical cable.