| 摘要 |
PURPOSE:To manufacture a tubular flanged member at a low cost by manufacturing a flanged short tube, in which a welding portion consisting of a short tube is made in one unit with a flange mounting portion by injecting a thermoplastic resin into a mold, and making a tubular flanged member by welding the welding portion of the flanged short tube to a top end of a tube body. CONSTITUTION:A flanked short tube 1 made of a thermoplastic resin consisting of, for example, polyethylene as a raw material and manufactured by an injection molding machine is integrally formed of a flange mounting portion 11 and a welding portion 12 consisting of a short tube. The welding portion 12 of the flanged short tube 1 is welded to a top end of a thermoplastic resin tube body 2 consisting of a polyethylene resin tube body to make a tubular flanged member 4. Thus, since a mold to be used is the one for manufacturing only the flanged short tube 1 which is a part of the tubular flanged member 4, it is not necessary to make the mold larger in dimension and, accordingly, the tubular flanged member, which is used when a resin tube body is connected at a portion of a flange, can be manufactured at a low cost. |
