| 摘要 |
PURPOSE:To prepare a heat shrinkable tube which is free from such a fear that it is creased or flattened by blowing a current of pressurized air of the same pressure into a bridged plastic tube from both the supply side and the rewinder side. CONSTITUTION:A current of pressurized air of the same pressure is blown into a bridged plastic tube 2 on a supply reel through its one end by a piping 8 connected to a supply reel stand 7 and through the other end of the tube 2 on a rewind reel 6 by a piping 10 connected to a rewind reel stand 9. And, the tube 2 unwound from a supply reel 1 is rewound by a rewind reel 6 through a preheating pipe 3, a forming pipe 4 and a cooling pipe 5. By this arrangement, the pressure inside the tube located at the inflation unit is automatically standardized and there is no necessity for paying special attention to the adjustment of air pressure. |
