| 摘要 |
PROBLEM TO BE SOLVED: To fabricate a high density film carrier tape by installing a punch unit in an automatic control punching machine and forming a group of plural pattern holes in a base film tape in one-time punching to make a film carrier tape. SOLUTION: A punch unit is installed in an automatic control punching machine, and a first group of four pattern holes 161 are formed in the corner to the upper right of a base film tape 28. Next, a second group of four pattern holes 162 are formed in the same base film 28. Likewise, a third group of four pattern holes 163 are formed in the base film 28. Thereafter, a work holder is moved backward and to the left, and a fourth group of pattern holes 164 and a fifth group of pattern holes 165 are formed. This operation is repeated to form all the pattern holes in a next one-repetition unit to make a film carrier tape. |
