Patent ID: 6136209
Filing Date: 2000-10-24
Classification: B26F,B31D,G09F,Y10T

Abstract:
A method of constructing a die sheet, said method comprising the steps of:(a) covering a portion of a die sheet surface of said die sheet with a plurality of dashed curvilinear lines of a first photo-resist material to form a first pattern, each of said plurality of dashed curvilinear lines having a first width;(b) covering at least one continuous section of said plurality of dashed curvilinear lines on said die sheet surface with a plurality of continuous curvilinear lines of a second photo-resist material to form a second pattern, each of said plurality of continuous lines having a second width, said second pattern covering said first pattern and said second width being greater than said first width;(c) removing material from sections of said die sheet not covered by said second pattern by applying a chemical to said die sheet surface of said die sheet;(d) removing said second photo-resist material from said die sheet by applying a solvent to said die sheet surface, said first photo-resist material being non-reactive with said solvent; and(e) removing material from sections of said die sheet not covered by said first pattern by applying a chemical to said die sheet surface of said die sheet to, in combination with step (c), form a plurality of cutting edges each consisting of a curvilinear body having a top edge positioned at alternating distances above said die sheet.