PURPOSE: To reduce costs by making joint paper unnecessary and improve use convenience and at the same time realize easy cutting-off with cut-off surfaces unstuck mutually even when the joint paper is not used and prevent a cutting-off tool from being damaged. ;CONSTITUTION: Soft aluminum foils 1 are restrained by providing a pinching jig 3 on both the upper and lower sides of many soft aluminum foils 1 that have been polymerized, and the other end of a tense wirelike cutting-off member 9 that supports one end at the side part of the pinching jig 3 is moved from one side edges of the aluminum foils 1 toward a polymerization direction, and the aluminum foils 1 are gradually broken from one side edges to the other side edges.;COPYRIGHT: (C)1995,JPO
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