| 摘要 |
<p>PURPOSE:To obtain a pressure resistant synthetic resin tube wherein a bonding property to a synthetic resin material forming a tube wall is raised by heating a metal reinforced band plate wherein a thin film coated resin layer coated with synthetic resin or resin coating is formed on total peripheral surface or total front or rear surface of a metal band plate, and both materials are bonded strongly to each other. CONSTITUTION:A metal reinforced band plate 1 is passed through four pair of bend forming rolls 13a-13d, wound helically, and shifted around a supporting beam 22a of a tube forming apparatus and a rotary transmission shaft 23b. The metal reinforced band plate 1 is shifted in a heater 23 with the tube forming apparatus, shifted to the tube forming part 24 while being heated, and the heated metal reinforced band plate 1 is shifted onto a forming roller of the tube forming apparatus. A synthetic resin band material from a first extruder 25 is brought into contact with the metal reinforced band plate 1. The band material is connected thereto by superposition, and an outer coated resin layer is formed. Further, another synthetic resin material from an second extruder is bonded to an inner face of the metal reinforced band plate 1 between the forming roller and the metal reinforced band plate 1 through a tube shaft 30, and another band material is bonded thereto to form a series of inner resin layers.</p> |
