摘要:
There is provided a tape core wire manufacturing apparatus that makes it possible to manufacture a large variety of tape core wires in small quantities with ease, and in addition, makes it easy to apply a uniform coating over a broad width. In the tape core wire manufacturing apparatus of the present invention, a coating apparatus that applies a coating material to respective optical fiber core wires has a coating head that moves in the longitudinal direction relatively to the respective optical fiber core wires that have been placed in a row on a coating jig. The coating head has a position adjustment surface that is located in the vicinity of a coating member of the coating head and adjusts the positioning in the thickness direction of the respective optical fiber core wires when these are in the form of a tape. This position adjustment surface is pressed against the respective optical fiber core wires. The coating head is also able to be tilted in the longitudinal direction.
摘要:
An optical fiber wiring sheet includes: at least one optical-fiber aligning section including a plurality of two-dimensionally aligned and wired coated optical fibers; and at least one optical-fiber branching part where at least one of the plurality of coated optical fibers branches off as a branching coated optical fiber from the remaining coated optical fibers. The coated optical fibers have ends which constitute optical input/output ports.
摘要:
An optical interconnection apparatus which is very easy to handle and does not cause excessive bending and breakage of the optical fibers when connecting with other optical apparatus is provided. The optical interconnection apparatus includes a base sheet and plural optical fibers two-dimensionally routed on the base sheet via an adhesive layer. The optical fibers form a routing pattern having at least a straight part, a crossing part, a curved part or a fiber pitch changing part. The apparatus further includes another base sheet this is adhered on the said routed optical fibers. The two base sheets have a different sizes so that one of the base sheets does not exist in the vicinity of the edge of the other base sheet at which the optical fibers are outwardly extended.
摘要:
An optical inter-connection apparatus according to this invention has plural optical fibers 4, which are routed in a two-dimensional plane and are provided at opposite ends thereof with end portions 5 adapted to permit optical interconnections thereto, and at least one protective resin layer 2 by which the optical fibers are held in place. The protective resin layer 2 is formed from a silicone-base material curable through a condensation reaction with liberation of an oxime or liberation of an alcohol or from a silicone-base material, which is curable by crosslinking through a hydrosilation reaction, and an adhesion promoter, and is joined with a base 1 or another protective resin layer via an adhesive layer 3. The adhesive layer comprises an acrylic pressure-sensitive adhesive. As an alternative, the adhesive layer may comprise a silicone-base pressure-sensitive adhesive which is curable by crosslinking through a hydrosilation reaction.
摘要:
A barrel for a twin screw extruder having a pair of helical screws has a barrel body provided with a pair of partly overlapping cylindrical bores, and the pair of helical screws are rotatably supported in the pair of cylindrical bores of the barrel to mix and extrude a molding material. An abrasion resistant layer is formed in at least portions of the surfaces of the pair of cylindrical bores extending in the vicinity of at least one of the two lines of intersection of the pair of partly overlapping cylindrical bores. The abrasion resistance of the abrasion resistant layer has a maximum in a portion thereof around the line of intersection of the pair of cylindrical bores and decreases gradually with distance from the line of intersection. The abrasion resistant layer is formed by depositing a material containing a hard substance by build-up welding, and the hard substance content of the material in the abrasion resistant layer is varied with distance from the line of intersection. The abrasion resistant layer is formed by depositing a material consisting of a corrosion resistant base alloy and a hard substance. The abrasion resistant layer may be formed on a corrosion resistant layer formed over the entire surfaces of the pair of cylindrical bores.
摘要:
Disclosed is a process for the preparation of an alloy having excellent corrosion resistance and wear resistance, which comprises subjecting a powdery mixture comprising a powder of at least one matrix metal selected from the group consisting of Fe-based alloys, Co-based alloys and Ni-based alloys and a vanadium carbide powder to a heat treatment, wherein by repeating fusion and re-fusion by a heat treatment using a heat source having a high energy density, a phase of uniform and fine vanadium carbide particles is recrystallized and/or redeposited in the matrix metal phase.
摘要:
A microwave oven comprises a heating element which produces heat by absorption of microwave radiation and on which is placed a material to be cooked with the interposition of a material support therebetween. If required, the heating element is disposed on a heat insulating body. A shield cover is arranged on the support for enclosing the material to be cooked placed on the support and for limiting the amount of microwave radiation which is allowed to be incident on the material from the exterior thereof. The material to be cooked is internally heated upon irradiation with the radiation and at the same time the heating element produces heat which is applied to the surface of the material through the material support. When the material support comprises a metal plate, an electric insulating body which prevents a spark discharge is arranged between the shield cover and the metal plate.
摘要:
An optical transmission medium bend working device that reduces bending loss of an optical transmission medium includes: an arc-discharge electrode that partially and sequentially heats a bend working area of a tape core wire in an up-down direction, the tape core wire extending in the up-down direction with a distal end thereof being located on a lower side, the bend working area being located above the distal end; a core wire holding unit that holds a portion of the tape core wire located above the bend working area; and a bending arm that applies force to the tape core wire in a state where the bend working area is heated to bend the tape core wire at the bend working area.
摘要:
An optical transmission medium shaping method and an optical transmission medium shaping apparatus can accurately adjust desire curvature radius without cracking the optical transmission medium. The optical transmission medium shaping method for bending an optical transmission medium using a transferring means and a noncontacting heating means, includes a transferring and heating process for heating part of the optical transmission medium by the noncontacting heating means while transferring the transferring means, and a bending process for bending the optical transmission medium.
摘要:
An optical fiber connecting method not causing any damage to the optical fibers and enabling effective use of space and an optical fiber connection structure formed by the method. The optical fiber connection structure is for connecting optical fibers by means of a component for connecting optical fibers comprising two plugs for aligning at least two optical fibers and connecting them and an adapter for fixing the plugs. Each plug in which an optical fiber is inserted is attached to an adapter in the direction perpendicular to the axial direction of the optical fiber, and the plug and adapter are fixed. A modification may be made in which a latch member is provided to at least one of the plug and adapter, a latch engaging section is provided to the other, the latch member is engaged with the latch engaging section, and the plug and adapter are fixed. Another modification may be made in which a pair of plugs with ferrules and a ferrule aligning member are used, and the ends of the opposed ferrules are inside the ferrule aligning member.