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The management cable of the current invention comprises a conduit having flexibility, inside floor of which being fitted with a liner, and an interior cable having an internal coat, which is inserted into the conduit in order that the interior cable free slides within the conduit. For example, in case the shortage of lubricants is generated as a result of long interval use of the control cable, there are some problems that the liner is totally worn down and the operationability of the management cable is excessively lowered, and the like. In the present invention, for the reason that organopolysiloxane having an extremely-excessive viscosity and the organopolysiloxane having a lower viscosity are dispersively contained in the thermoplastic resin used in the above-talked about liner, it is of course that there isn't a necessity to make use of a lubricant between the interspace of the conduit and the interior cable, and a superb perform that the sliding operation of the conduit and the inside cable might be easily carried out for an extended period of time, is exhibited. When the kinematic viscosity exceeds 10000 cSt, the organopolysiloxane does not bleed out from the thermoplastic resin sufficiently, and the load efficiency is lowered. When the kinematic viscosity is lower than 25 cSt, the organopolysiloxane having a lower viscosity is evaporated in a short time, and the wear and tear of the liner are generated through the management cable is used.

The item of the present invention is to delete the above-mentioned disadvantages of typical control cables and to supply a management cable which doesn't necessitate a lubricant to avoid a fancy coating operation and which can be used with smooth sliding operation of the inside cable for an extended time period. FIG. 1 is a partially-minimize-off perspective view exhibiting one embodiment of the management cable of the present invention. When the content material of the organopolysiloxane is lower than 13% by weight, shield control cable the load effectivity is lowered when the control cable is used for an extended period of time. The representative examples of the organopolysiloxane having a decrease viscosity are, for example, dimethylpolysiloxane, methylalkylpolysiloxane, methylphenylpolysiloxane, methylaminoalkylpolysiloxane, methylfluoroalkylpolysiloxane, and the like. The typical examples are, as an example, dimethylpolysiloxane, methylalkylpolysiloxane, methylphenylpolysiloxane, methylaminoalkylpolysiloxane, methylfluoroalkylpolysiloxane, and the like. Representative examples of the sort II are, as an illustration, Teflon (Registered Trademark) PFA 340-J commercially obtainable from DUPONT-MITSUI FLUORO CHEMICALS CO., LTD., and the like.

The management cable has been conventionally used in order to operate a transmission utilized in cars, autobicycles, bicycles and the like, a brake, a clutch, a speedmeter, and the like. FIG. 2 is an illustrative view of an apparatus for measuring the properties of the management cable of the current invention. When the melt index of the polybutylene terephthalate is less than 0.1 g/10 minutes, it's troublesome to supply a liner by means of an extruder, and when the melt index exceeds 5 g/10 minutes, there's a tendency that the liner is definitely peeled off from the conduit because of the lack of toughness of the liner throughout forming the liner and that physical properties similar to sturdiness and abrasion resistance required for the liner aren't simply exhibited. However, there are a number of problems, in the management cable wherein a lubricant is used, reminiscent of problem of operation for coating as a result of dispersion of the load effectivity of merchandise is caused by the unevenness of a coating, rubbishes and dusts are easily adhered to the lubricant when making use of the lubricant to the management cable, and drip and the like are generated.

However, when a organopolysiloxane having too low a viscosity is contained in a big quantity within the resin, there may be a problem that the organopolysiloxane can't be successfully extruded to produce a liner, and thus the molding cannot be carried out because of the slipping of the resin on the cylinder barrel within the extruder. When the content material is more that 20% by weight, an extruded product can't be produced because a slip of a resin happens on a cylinder barrel in an extruder and the constant feed of the resin cannot be carried out. When the content material of the organopolysiloxane having an ultra-high viscosity is less that 45% by weight and the content of the organopolysiloxane having a lower viscosity is more that 55% by weight, an extruded product can't be produced as a result of a slide between a screw and a resin happens in an extruder and the feed of the resin cannot be carried out. Out of the total variety of rods, forty ones are used for vitality distribution management via the hight of the energetic zone of the reactor. However, when the viscosity of the organopolysiloxane is simply too high, the quantity of the organopolysiloxane which is extided from the surface of the resin is little, and in accordance the load efficiency and durability of the management cable cannot be improved sufficiently.