The inner coat 3 of which thickness is about 0.35 mm is coated on the surface floor of the interior cable 1. The surface diameter of the inside coat 3 is 3.7 mm. The control cable of the present invention contains a conduit having flexibility, the inside floor of which being set up with a liner and an internal cable having an inside coat, and the interior cable is inserted into the conduit in order that the interior cable freely slides in the conduit as mentioned above. Among the many above-talked about thermoplastic resins, polybutylene terephthalate having a melt index of 0.1 to 5 g/10 minutes can be notably preferably used as a result of the change of load efficiency is small when the management cable is used for a protracted time frame. For example, a method comprising ading the organopolysiloxane having an extremely-high viscosity and the organopolysiloxane having a lower viscosity individually to the thermoplastic resin while heating and kneading the thermoplastic resin and uniformly dispersing them, a method comprising adding the organopolysiloxane, which is previously prepared by mixing the organopolysiloxane having an extremely-excessive viscosity and the organopolysiloxane having a lower viscosity in a prescribed proportion, to the melted thermoplastic resin and uniformly dispersing them, and the like could be exemplified.



















In the current invention, for the reason that organopolysiloxane having an extremely-high viscosity and the organopolysiloxane having a decrease viscosity are dispersively contained in the thermoplastic resin used within the above-talked about liner, it`s of course that there is no such thing as a necessity to make use of a lubricant between the interspace of the conduit and the interior cable, and a wonderful operate that the sliding operation of the conduit and the inner cable might be easily carried out for a long period of time, is exhibited. The organopolysiloxane comprising the organopolysiloxane having an ultra-high viscosity and the organopolysiloxane having a lower viscosity is dispersively contained in the thermoplastic resin in order that the content material of the organopolysiloxane is thirteen to 20% by weight. When the kinematic viscosity exceeds 10000 cSt, the organopolysiloxane doesn`t bleed out from the thermoplastic resin sufficiently, and the load efficiency is lowered. The consultant examples of the organopolysiloxane having a decrease viscosity are, for instance, dimethylpolysiloxane, methylalkylpolysiloxane, methylphenylpolysiloxane, methylaminoalkylpolysiloxane, methylfluoroalkylpolysiloxane, and the like.



















The typical examples are, as an example, dimethylpolysiloxane, methylalkylpolysiloxane, methylphenylpolysiloxane, methylaminoalkylpolysiloxane, methylfluoroalkylpolysiloxane, and the like. As a cloth for the inside coat, as an illustration, Teflon, 11-nylon and the like are used. Among them, dimethylpolysiloxane is particularly preferable from the viewpoint of lubricationability between the thermoplastic resin of the liner and that of the inner coat, thermal resistance, cost, and the like. The amounts of the organopolysiloxane having an ultra-excessive viscosity and the organopolysiloxane having a lower viscosity contained within the thermoplastic resin of the above-talked about liner are adjusted in order that the organopolysiloxane is composed of forty five to 85% by weight of the organopolysiloxane having an extremely-high viscosity and 55 to 15% by weight of the organopolysiloxane having a lower viscosity. Accordingly, an organopolysiloxane having an ultra-excessive viscosity and an organopolysiloxane having a decrease viscosity are used in the present invention in order to improve extruding stability throughout producing a liner and to sufficiently release these organopolysiloxanes on the surface of the resin sufficiently. The management cable has been conventionally used with a view to function a transmission used in vehicles, autobicycles, bicycles and the like, a brake, a clutch, a speedmeter, and the like. In order to enhance the load efficiency of a management cable and not using a lubricant, an organopolysiloxane is contained in a resin for a liner or an inside coat, and the organopolysiloxane extides from on the surface of the resin.



















When the content material of the organopolysiloxane is less than 13% by weight, the load effectivity is lowered when the control cable is used for a protracted time period. When the content material of the organopolysiloxane having an extremely-excessive viscosity is greater than 85% by weight and the content of the organopolysiloxane having a lower viscosity is much less that 15% by weight, the effects don`t differ much from the consequences when the organopolysiloxane having an extremely-excessive viscosity is used solely, and the improvement of load efficiency is little. However, when the viscosity of the organopolysiloxane is too excessive, the quantity of the organopolysiloxane which is extided from the floor of the resin is little, and in accordance the load effectivity and durability of the control cable can`t be improved sufficiently. Also, the durability of the above-mentioned control cable largely depends upon the lubricant. Also, a synthetic resin coating (hereinafter known as inside coat) is about on the outer surroundings of the inner cable. However, there are a number of problems, within the management cable in which a lubricant is used, similar to issue of operation for coating as a result of dispersion of the load effectivity of products is attributable to 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.



































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