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

As talked about above, for the reason that management cable of the current invention does not necessitate a lubricant, a problem regarding workability for coating a lubricant is solved and irregurality of load effectivity of merchandise due to the uneveness of coating isn't generated. FIG. 1 is a partially-cut-off perspective view showing one embodiment of the pull kind control cable of the present invention. The inner cable 1 was gone there and again 60 strokes per one minute. Also, when the melt index is just too large, the polybutylene terephthalate lacks toughness and cracks are generated in the internal coat, and the liner is commonly damaged when the inner coat is quickly bent in the assembling technique 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 greater than 5 g/10 minutes, there's 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, wherein organopolysiloxane was contained only within the thermoplastic resin of the interior coat, has low durability. The polybutylene terephthalate is superb in thermal resistance, oil resistance and abrasion resistance, and has a low coefficient of friction. The sort II has a polymerization diploma better than the sort I, and is excellent in stress-cracking resistance. The smaller the melt index of the polybutylene terephthalate is, the higher the durability akin to abrasion resistance and stress-cracking resistance is, however it tends to be tough for carrying out the extrusion molding. Among the thermoplastic resins used within the internal coat, polybutylene terephthalate, high density polyethylene, polyoxymethylene and polyphenylene-sulfide are notably preferable because these are glorious in abrasion resistance. Further, it can be seen that the control cable produced in Example 5, wherein organopolysiloxane was dispersively contained in thermoplastic resins of each the liner and the inner coat, has physical properties almost equal to the control cables produced in other Examples, during which organopolysiloxane was dispersively contained solely within the thermoplastic resin of the liner.

A thermoplastic resin shown in Tables 1 to 4 was heated to melt, and the organopolysiloxane obtained in the above was added thereto in a proportion proven in Tables 1 to 4. After they were uniformly kneaded, shield control cable a liner having an inside diameter of 4.6 mm and an outdoor 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. Within the protective layer 6, various supplies conventionally identified akin to polypropylene and polyvinyl chloride can be used. Next, the liner was inserted right into a conduit having a protecting layer made 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 artificial resin resembling polypropylene. Also, as a resin of the inner coat, a thermoplastic resin in which the above-talked about organopolysiloxane is dispersively contained will be utilized in the identical means as in the above-talked about liner. Examples of the thermoplastic resin are, for example, 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 current invention just isn't limited by the exemplified ones.