| 摘要 |
PURPOSE:To obtain an accurate piping pattern in a stabilized and simple manner by a method wherein in the case of molding hot water circulating pipes to be incorporated into the floor panel, non-bridged water bridge type polyethylene pipes are bridge-molded by a molding frame having grooves of a pipe pattern configuration. CONSTITUTION:The non-bridged water bridge type polyethylene pipes 12 are fitted in the grooves 6 in the concave molding frame 5 one above another in layers and when a predetermined number of the pipes 12 are fitted in the grooves 6, a convex molding frame 8 is fitted into the concave frame 5. Then hot water of about 80-100 deg.C is circulated through the pipe 12 to soften the latters and the convex frame 8 is pressed against the concave frame 5 by a press 10 so that the pipes 12 are molded to a predetermined configuration and bridging reactions are caused to take place among the pipes. Thus, it is possible with the above structure to obtain the stabilized and accurate pipe pattern in a simple manner. |
