Production method and production device null of heaven and earth board for angular can

摘要

PURPOSE:To make dies into small sized ones at a low cost by reducing waste of a material by a method wherein after cutting a blank in a square or rectangular small blank of a top and bottom sheet size, four corner parts thereof are respectively cut round with a notching die, and each small blank is drawn and embossed. CONSTITUTION:After cutting a blank 21 into a plurality of tanzaku(a small strip for fancy paper) like blanks, they are cut in a square or rectangular small blank of a top and bottom sheet size 23.... Then, a notching die 25 with which four corner parts 23a... of each small blank 23 are respectively cut round, and a drawing and embossing die with which drawing of each small blank 23 and its patterning by embossing are carried out, are provided. The notching die 25 is equipped with an upper edge 37 and a lower edge 39 respectively at positions corresponding to four corner parts 23a,... of each small blank 23. Consequently, the notching die and the drawing and embossing die can be made small-sized.