| 摘要 |
<p>PROBLEM TO BE SOLVED: To shorten a molding cycle to improve productivity, and carry out connection surely by forming a heating element on a conductive sheet, in an electrodeposition joint which the heat element is arranged in the vicinity of a surface of a joint main body. SOLUTION: An electrodeposition joint of a socket type is composed of a joint-main body 1 and a heating element 2 of a conductive sheet shape. The heating element 2 is made of polyethylene(PE) resin formed by uniformly mixing and dispersing carbon black, and terminal pins 31, 31 for current-carrying are connected to a part of ring shaped electrode plates 3, 3 mounted on outer peripheral surfaces of both ends of the heating element 2. In the case of use, PE pipes 4, 4 are inserted in sockets of both end parts of the electric fusion joint, and current-carrying is carried out through power supply codes connected to the terminal pins 31, 31. The carbon black in the heating element 2 is heated, the PE resin formed around the carbon black and the outer surface layers of both PE pipes 4 are fused, and the electric fusion joint and both PE pipes are fusing connected to each other so as to provide a connecting part not having a defect part and having a good air tightness.</p> |
