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Cable and method for manufacturing same

A cable manufacturing and cable technology, which is applied in the field of cable and its manufacturing, can solve the problems of poor appearance and discoloration of extruded products, and achieve the effect of improving deformation resistance and inhibiting discoloration

Inactive Publication Date: 2018-05-25
HITACHI METALS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, if the amount of the catalyst is increased, discoloration (ヤケ) due to scorch (early crosslinking) occurs, and there is a problem of poor appearance of the extruded product.

Method used

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  • Cable and method for manufacturing same
  • Cable and method for manufacturing same
  • Cable and method for manufacturing same

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Embodiment

[0072] Hereinafter, the present invention will be described in further detail based on examples, but the present invention is not limited thereto.

[0073] Manufactured by the following method Figure 4 structure of the cable and evaluate it.

[0074] Make three diameters φ 1 The cable core 10 (outer diameter φ 2 25 to 26 mm), the insulated wire 3 has a conductor 1 formed of copper wires twisted with seven bare wires and an insulator 2 formed of ethylene-propylene rubber. The distance from the center of the cable to the outermost peripheral portion of the insulated wire 3 is about 12.5-13mm.

[0075] use the aforementioned Figure 2~3 In the manufacturing device shown, a sheath material is filled in the grooves between the insulated wires 3 of the cable core 10 to form a groove-filling sheath 11, and an outer sheath 12 having a thickness t of about 4 to 5 mm is coated thereon, thereby get the diameter φ 3 Cable 20 around 35mm.

[0076] As the material used, chloroprene ...

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Abstract

The present invention provides a cable and a method for manufacturing the same, which are capable of suppressing the occurrence of discoloration due to scorching in an extruder, and are excellent in deformation resistance even when the crosslinking speed is increased. A method for solving the problem is that a cable (20) is characterized by comprising a core (10) having a plurality of insulated wires (3), a tank-filling jacket (11) (first jacket) filling the tank among the plurality of insulated wires (3) forming the core (10), and an outer jacket (12)(second jacket) on the outer periphery ofthe core (10) filled with the tank-filling jacket (11) , the concentration of the silane cross-linking catalyst (catalytic element 13) contained in the tank-filling jacket (11) is more than 1.1 timesbut less than 3 times the concentration of the silane cross-linking catalyst (catalytic element 13) contained in the outer sheath (12).

Description

technical field [0001] The present invention relates to cables and methods for their manufacture. Background technique [0002] Conventionally, various extrusion moldings have been formed using polyolefin-based resins such as silane-crosslinked rubber and polyethylene. This extruded product is used for sheath coating of electric cables, rubber-coated cables, and the like. [0003] In the production of a cable with a sheath made of silane-crosslinked rubber, a large amount of heat energy and expensive heating equipment are not required, and moisture in the atmosphere is used to perform crosslinking to obtain desired characteristics, so it is very advantageous in terms of cost . [0004] On the other hand, crosslinking by silane has a problem of slow crosslinking speed. In particular, since crosslinking proceeds from the surface to the inside, in the case of a thick rubber sheath, it takes a lot of time to crosslink to the inside. Therefore, in the case of a thick rubber-s...

Claims

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Application Information

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IPC IPC(8): H01B7/18H01B13/24B29C48/34
CPCH01B7/187H01B7/1875H01B13/24
Inventor 儿玉壮平
Owner HITACHI METALS LTD
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