Representative examples of the kind III are, for instance, Teflon FEP160 commercially accessible from DUPONT-MITSUI FLUORO CHEMICALS CO., LTD., and the like. Representative examples of the polyoxymethylene are, for instance, DELRIN commercially out there from Du Pont, Celcon commercially obtainable from Hoechst Celanese, and the like. As is evident from the results shown in Tables 1 to 4, the control cables of the current invention produced in Examples are excellent in preliminary load efficiency and load efficiency after the operation was carried out 1,000,000 instances compared with the control cables produced in Comparative Examples when both the form of the thermoplastic resin used within the liner in Examples and that in Comparative Examples are the identical. The polybutylene terephthalate additionally has a characteristic that the difference of the preliminary load efficiency and the load efficiency after the control cable is operated for an extended period of time is small. When the content of the organopolysiloxane is lower than 13% by weight, the load effectivity is lowered when the control cable is used for a long time frame. Also, since a liner containing a selected organopolysiloxane is used within the management cable of the present invention, excellent load effectivity is continued for an extended time frame.

As talked about above, because the control cable of the current invention does not necessitate a lubricant, a problem regarding workability for coating a lubricant is solved and irregurality of load efficiency of merchandise due to the uneveness of coating isn't generated. FIG. 1 is a partially-lower-off perspective view displaying one embodiment of the pull sort management cable of the present invention. The internal cable 1 was gone there and back 60 strokes per one minute. Also, when the melt index is simply too large, the polybutylene terephthalate lacks toughness and cracks are generated in the inside coat, and the liner is usually damaged when the inner coat is rapidly bent within the assembling strategy of a management cable. Accordingly, it's preferable that the melt index is 0.5 to 5 g/10 minutes. Accordingly, it is preferable that the melt index is at most 5 g/10 minutes. When the melt index is more than 5 g/10 minutes, there is a tendency that oil resistance, stress cracking resistance and abrasion resistance deteriorate.

The polyoxymethylene is great in abrasion resistance and has a low abrasion coefficiency. Also, it may be seen that the management cable produced in Comparative Examples, in which organopolysiloxane was contained only within the thermoplastic resin of the inner coat, has low sturdiness. The polybutylene terephthalate is great in thermal resistance, oil resistance and abrasion resistance, and has a low coefficient of friction. The sort II has a polymerization diploma greater than the type I, and is excellent in stress-cracking resistance. The smaller the melt index of the polybutylene terephthalate is, the larger the durability corresponding to abrasion resistance and stress-cracking resistance is, nevertheless it tends to be tough for carrying out the extrusion molding. Among the many thermoplastic resins used within the interior coat, polybutylene terephthalate, excessive density polyethylene, polyoxymethylene and polyphenylene-sulfide are particularly preferable because these are wonderful in abrasion resistance. Further, it may be seen that the management cable produced in Example 5, by which organopolysiloxane was dispersively contained in thermoplastic resins of each the liner and the interior coat, has bodily properties virtually equal to the control cables produced in other Examples, wherein organopolysiloxane was dispersively contained only in the thermoplastic resin of the liner.

A thermoplastic resin proven in Tables 1 to 4 was heated to melt, and the organopolysiloxane obtained within the above was added thereto in a proportion shown in Tables 1 to 4. After they had been uniformly kneaded, shield control cable a liner having an inside diameter of 4.6 mm and an outside diameter of 5.6 mm was molded. The skin of the armor 5 is covered with the protective layer 6 having a thickness of 0.7 mm. In the protecting layer 6, numerous materials conventionally recognized akin to polypropylene and polyvinyl chloride can be utilized. Next, the liner was inserted into a conduit having a protective layer product of polypropylene of 0.7 mm in thickness on the outside floor of a springy armor layer having an outdoor diameter of 8.6 mm. The conduit 2 is composed of an armor layer 5 and a protective layer 6 of a synthetic resin reminiscent of polypropylene. Also, as a resin of the internal coat, a thermoplastic resin wherein the above-talked about organopolysiloxane is dispersively contained might be utilized in the identical way as within the above-talked about liner. Examples of the thermoplastic resin are, for instance, polybutylene terephthalate, excessive density polyethylene, polyoxymethylene, a fluorocarbon resin represented by polytetrafluoroethylene, a polyamide represented by 6,6-nylon, polyphenylene sulfide, and the like, however the present invention just isn't limited by the exemplified ones.