Optical fiber cord and manufacturing method thereof

A method of manufacturing optical fiber cords comprising steps of:

• introducing a optical fiber cord into an extruder, the optical fiber cord including a fiber ribbon with a cross-section flat in a first direction having a plurality of optical fibers and including a plurality of first tendency providers juxtaposed along about the optical fiber ribbon;
• introducing at least one second tendency provider into the extruder so as to be juxtaposed along the optical fiber ribbon cord in the direction crossing the first direction;
• and
• extruding sheathing resin through the extruder, and coating the optical fiber ribbon cord and the first tendency providers with the sheathing resin.

A method of manufacturing optical fiber cords comprising steps of:

• juxtaposing a plurality of first tendency providers along a fiber ribbon, the fiber ribbon having a cross-section flat in the first direction and a plurality of optical fibers;
• introducing the fiber ribbon and the first tendency providers placed in juxtaposition with each other into an extruder;
• extruding sheathing resin to coat the fiber ribbon and the first tendency providers with the sheathing resin and yielding a molded optical fiber ribbon cord;
• introducing the optical fiber ribbon cord and at least one second tendency provider to be juxtaposed along the optical fiber ribbon cord into a second extruder;
• and
• extruding sheathing resin to coat the optical fiber ribbon cord and the second tendency provider with the sheathing resin.

A method of manufacturing optical fiber cords comprising steps of:

• juxtaposing a plurality of first tendency providers along about a fiber ribbon, the fiber ribbon having a cross-section flat in the first direction and a plurality of optical fibers;
• introducing the fiber ribbon and the first tendency providers placed in juxtaposition with each other into an extruder;
• introducing at least one second tendency provider into the extruder so as to be juxtaposed along the fiber ribbon and first tendency providers;
• and
• extruding sheathing resin through the extruder, coating the fiber ribbon and the first tendency providers with the resin, and coating the second tendency provider with the resin.

A method of manufacturing optical fiber cords comprising steps of:

• juxtaposing a plurality of first tendency providers along about a fiber ribbon, the fiber ribbon having a cross-section flat in a first direction and a plurality of optical fibers;
• introducing the fiber ribbon and the first tendency providers placed in juxtaposition with each other into an extruder;
• introducing cushioning resin into the extruder so that a cushion member may be disposed by the side of an end portion in the first direction of the fiber ribbon;
• and
• extruding sheathing resin through the extruder to coat the fiber ribbon and the first tendency providers with the resin, in a state where the cushion member is thermally fusion-bonded to the resin.

A method of manufacturing optical fiber cords comprising steps of:

• juxtaposing a plurality of first tendency providers along a fiber ribbon, the fiber ribbon having a cross-section flat in the first direction and a plurality of optical fibers;
• introducing the fiber ribbon and the first tendency providers placed in juxtaposition with each other into a first extruder;
• extruding cushioning resin through the first extruder so that a cushion member may be disposed by the side of an end portion in the first direction of the fiber ribbon and yielding a molded fiber ribbon spliced with the cushion member;
• and
• introducing the fiber ribbon spliced with the cushion member into a second extruder to thermally fusion-bond sheathing resin thereon.

A method of manufacturing optical fiber cords comprising steps of:

• juxtaposing a plurality of first tendency providers along about a fiber ribbon, the fiber ribbon having a cross-section flat in the first direction and a plurality of optical fibers, and introducing them into an extruder;
• juxtaposing at least one cushion member along the fiber ribbon and the first tendency providers to introduce them into the extruder;
• and
• extruding sheathing resin through the extruder to thermally fusion-bond the fiber ribbon, the first tendency providers and the cushion member.

A method of manufacturing optical fiber cords comprising steps of:

• juxtaposing a plurality of first tendency providers along about an fiber ribbon, the fiber ribbon having a cross-section flat in the first direction and a plurality of optical fibers, and the first tendency providers being disposed at least by the side of an end portion in the first direction of the fiber ribbon;
• applying adhesive to the first tendency providers at portions which will contact to the interior of a sheath, the first tendency providers being disposed by the side of the end portion in the first direction of the fiber ribbon;
• and
• extrusion-coating the exteriors of the fiber ribbon and a plurality of the first tendency providers with sheathing resin.

A method of manufacturing optical fiber cords comprising steps of:

• sticking reinforcement tapes together in order to surround a fiber ribbon, the fiber ribbon having a cross-section flat in the first direction and including a plurality of optical fibers;
• juxtaposing a plurality of first tendency providers along about the fiber ribbon;
• and
• extrusion-coating the exteriors of the fiber ribbon, the reinforcement tape and a plurality of the first tendency providers with sheathing resin.