(19)
(11)EP 4 273 605 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
20.12.2023 Bulletin 2023/51

(43)Date of publication A2:
08.11.2023 Bulletin 2023/45

(21)Application number: 23192573.6

(22)Date of filing:  15.03.2018
(51)International Patent Classification (IPC): 
G02B 6/44(2006.01)
(52)Cooperative Patent Classification (CPC):
B29D 11/00663; G02B 6/4413; G02B 6/4433; G02B 6/449; B29C 48/156; B29C 48/34; B29C 48/05; B29C 48/06; G02B 6/4429; G02B 6/4403; G02B 6/4431
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 14.04.2017 JP 2017080438

(62)Application number of the earlier application in accordance with Art. 76 EPC:
18785229.8 / 3611545

(71)Applicant: FUJIKURA LTD.
Koto-ku Tokyo 135-8512 (JP)

(72)Inventors:
  • SATO, Shinnosuke
    CHIBA, 285-8550 (JP)
  • TOMIKAWA, Kouji
    CHIBA, 285-8550 (JP)
  • OSATO, Ken
    CHIBA, 285-8550 (JP)

(74)Representative: Plasseraud IP 
66, rue de la Chaussée d'Antin
75440 Paris Cedex 09
75440 Paris Cedex 09 (FR)

  


(54)MANUFACTURING METHOD FOR OPTICAL FIBER CABLE AND MANUFACTURING DEVICE FOR OPTICAL FIBER CABLE


(57) A manufacturing method of an optical fiber cable includes an SZ twisting step of twisting a plurality of optical fibers(3) or a plurality of optical fiber units (5) in an SZ manner by an SZ twisting device, and forming an optical fiber bundle (B), and a covering step of covering the optical fiber bundle with a sheath (101) by an extrusion molding device (14), and in the covering step, the optical fiber bundle is covered with the sheath while pressing the optical fiber bundle, by a pressing portion (13) disposed between the SZ twisting device and the extrusion molding device.







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