| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the movement of a wiremat, the projecting out of injected resin from between covered heating wires and the occurrence of an accident such as water leak due to sticking failure between the wiremat and the injected resin in the case of injection molding. SOLUTION: A wound body 2 is made by spirally winding a covered heating wire 21 covered with resin, and the wound body 2 is sandwichedly held between the pressing face 41 of a convex die 4 having the about same curvature as the inner face of a saddle part and the pressing face 51 of a concave die 5 which has the about same curvature as the outer face of the saddle part and is provided with a rugged pattern, and as the concave die 5 is heated, the wound body 2 is pressed by the convex die 4 and the concave die 5, and the outer face side of the wound body 2 is melted and fused for forming a wiremat. The wiremat is formed into a shape along a core, and the rugged pattern is given to an external face. Next, the wiremat is attached to the core of an injection molding metal mold, and molten resin is injected and charged for forming a branch saddle.</p> |
