| 摘要 |
A METHOD FOR PRODUCING PLASTIC TANKS (2) FOR LIQUIDS WITH A TAPPING VALVE, WHEREIN THE TANK (2) IS PRODUCED FROM A TUBULAR PARISON BY BLOW MOLDING, AND WHEREIN A HOLDING FLANGE (19) OR A THREADED SOCKET (20) IS FORMED ON THE TANK (2). AFTER THE DRAIN OUTLET OF THE TANK (2) HAS BEEN CUT OUT OF THE TANK WALL INSIDE THE HOLDING FLANGE (19) OR THE THREADED SOCKET (20), THE FINISHED PREASSEMBLED TAPPING VALVE IS WELDED BY ITS INLET SOCKET TO THE HOLDING FLANGE (19) OR THE THREADED SOCKET (20) OF THE TANK BY A WELDING MACHINE, DURING WHICH THE TANK (2) IS CENTERED AND HELD IN THE WELDING MACHINE BY THE HOLDING FLANGE (19) OR THE THREADED SOCKET (20).FIG. 1 |
