To make troublesome positioning when a seal is to be fixed unnecessary and to solve such a problem as falling down of the seal caused by deterioration of an exclusive tape which occurs often when the vol. is large by setting the seal for pressing a foil which remaining, heat is applied on and is replacable on a tray fitted on a hot plate.

A tray 3 with a heat insulating handle fitted on a hot plate 4 is drawn and a cassette type tray 6 being coincided with the constitution of a seal 5 is set thereon. Then, necessary seals 5 such as Chinese characters, letters and marks are taken out by means of an exclusive tweezers from a box with a heater 2 for keeping the seals warm by the same temp. control as the hot plate 4 and they are set in a channel of the cassette type tray 6 to perform pressing a foil.