Abstract: The product efficiency of bags each with an end face part is increased. A panel webs is guided to be divided along a line of weakness of the panel web and to be folded along division edges of the panel web. This guiding of the first panel and temporary sealed sections cause a side gusset to be cut open along a line of weakness of the side gusset such that open surfaces are formed. After the forming of the open surfaces, an end face web is supplied to be superposed on folded parts of the panel web and the open surfaces of the side gusset.

Abstract: The invention provides a process for producing vanadium alloy foil suitable as a membrane in a hydrogen-refining unit. A vanadium alloy comprising 5 to 25% by weight of at least one selected from the group consisting of Ni, Co, Mo, Fe and Ag, 0.01 to 5% by weight of at least one selected from the group consisting of Ti, Zr and Y, and the balance being V is used. A melt of the vanadium alloy is prepared by use of a crucible 1 having slit 3 in the bottom, a roll 2 comprising a cylinder whose central axis is arranged to be parallel to the slit is rotated, the melt is jetted from the slit 3 to the roll surface 5, the melt is jetted from the slit 3 is rapidly cooled, and the vanadium alloy solidified on the roll surface 5 is continuously exfolitated from the roll surface 5 to obtain the foil.

Abstract: The invention provides a process for producing vanadium alloy foil suitable as a membrane in a hydrogen-refining unit.