公开(公告)号：EP3764140A1

公开(公告)日：2021-01-13

申请号：EP19763798.6

申请日：2019-03-08

申请人： FURUKAWA ELECTRIC CO., LTD.

发明人： TANAKA, Hiroki ,  YOKOMIZO, Kenji ,  ISHIMURA, Tomohiro ,  WATANABE, Hirotaka ,  ARASHITANI, Yoshihiro

IPC分类号： G02B6/44

摘要： Provided is an optical fiber ribbon and an optical fiber cable, which are adaptable to manufacture at a high velocity, in the intermittent connecting type optical fiber ribbon obtained by adhering and connecting adjacent colored optical fibers by intermittent connecting portions. In an optical fiber ribbon 2 of the present invention, since, in addition to polyol having a weight average molecular weight in a specific range, rheology control agent is contained in a specific range in a material forming an intermittent connecting portion 3, the Newtonian region between a low shear rate region and a high shear rate region of the material forming the intermittent connecting portion 3 can be adjusted. Thus, scattering of the material due to a centrifugal force generated by rotation of an application roll that applies the material at the time of manufacture and the like can be suppressed, and the application amount to colored optical fiber 1 can be stabilized. In addition, the optical fiber ribbon 2 can maintain suppression of such scattering and the like even in the manufacture at a high linear velocity.

公开(公告)号：EP3561564A1

公开(公告)日：2019-10-30

申请号：EP17882406.6

申请日：2017-12-19

申请人： Furukawa Electric Co., Ltd.

发明人： TANAKA, Hiroki ,  YOKOMIZO, Kenji ,  ISHIMURA, Tomohiro ,  HOSHINO, Yutaka ,  IWAMA, Masaki ,  OTANI, Eisuke ,  MATSUSHITA, Shunichi ,  ARASHITANI, Yoshihiro ,  YAGI, Takeshi

IPC分类号： G02B6/44

摘要： To provide a method for manufacturing an intermittent bonding type optical fiber ribbon, which can also be used for manufacturing with high linear velocity, and the intermittent bonding type optical fiber ribbon.
The present invention is a method for manufacturing an intermittent bonding type optical fiber ribbon 2 which is capable of conveniently forming non-connection portions 4 and intermittent connection portions 3 between adjacent coated optical fibers 1 formed into an optical fiber ribbon by performing a laser processing for the ribbon through the irradiation with the pulse laser light, thereby making it possible to rapidly form the intermittent connection portions 3 and the non-connection portions 4 while maintaining high linear velocity of the coated optical fiber 1 or a high speed of application of a resin composition applied to connect the adjacent coated optical fibers 1 to each other. Further, the non-connection portions 4 and the intermittent connection portions 3 are formed in the obtained optical fiber ribbon 1 through the irradiation with the pulse laser light, such that the optical fiber ribbon 1 becomes the intermittent bonding type optical fiber ribbon 2, 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.

公开(公告)号：EP3385765A1

公开(公告)日：2018-10-10

申请号：EP16870497.1

申请日：2016-11-22

申请人： Furukawa Electric Co. Ltd.

发明人： TANAKA, Hiroki ,  HOSHINO, Yutaka ,  WATANABE, Hirotaka ,  ARASHITANI, Yoshihiro ,  YOKOMIZO, Kenji ,  ISHIMURA, Tomohiro

IPC分类号： G02B6/44 ,  C03C25/24

CPC分类号： C03C25/24 ,  C03C25/104 ,  C03C25/475 ,  G02B6/02395 ,  G02B6/44 ,  G02B6/4403

摘要： Provided are an optical fiber ribbon and an optical fiber cable which prevent cracks of a connection and detachment of the connection from a colored optical fiber core when the optical fiber cable is subjected to repetitive ironing and which does not impair characteristics of the cable at the time of high-density cabling.
In the present invention, an optical fiber ribbon 2 is intermittently connected in a length direction by an intermittent connection 3 which includes a polyol having a weight-average molecular weight of 3000 to 4000 in a specific amount relative to the entire intermittent connection 3 and which has Young's modulus at 23°C within a specific range. Therefore, when collectively unitizing optical fiber ribbons 2 to form an optical fiber cable, the present invention provides an optical fiber ribbon 2 which maintains advantages of the optical fiber ribbon 2 and which prevents cracks of the intermittent connection 3 and detachment of the intermittent connection 3 from a colored optical fiber core 1 when the cable is subjected to repetitive ironing. The present invention also provides an optical fiber cable provided with the optical fiber ribbon 2.