| 摘要 |
PURPOSE:To prevent the hinge part of a hinge type pouring port from being deteriorated by the heat applied for heating and melting plastic layers, which are laminated on both sides of a paper carton. CONSTITUTION:In heating device, which heats and melts layers laminated on both sides of a paper carton having a hinge type pouring port at its top, the device is equipped with an oven, which is movable from the upper part to the bottom part of the carton with its upper part open, blowing holes, which are provided on the side walls of the oven and through which hot air is blown against the inner walls of the carton, and a hinge part cooling nozzle, by which air is blown against the hinge part of said pouring port or metal, pipe, through which cooling water is circulated. |
