| 摘要 |
A method of scoring an enameled metal sheet to form a line of weakness in the sheet while minimizing disruption of the enameled coating. The enameled surface is placed in contact with an anvil having a flat surface portion. The flat surface portion extends a relatively short distance in a transverse direction on either side of the desired line of score with angled surface portions of the anvil extending downwardly from the flat surface portion to create void spaces between the angled surface portions and the metal sheet. A scoring tool is then brought into forcible contact with the metal sheet along the desired line of score. The scoring tool includes a scoring edge which contacts the metal sheet with the scoring tool having inclined side surfaces which are angled outwardly away from the scoring edge. The inclined side surfaces displace metal within the metal sheet is a downward direction away from the line of score. As metal within the sheet is, thus, displaced, the displaced metal flows into the void spaces with the angled surface portions making an angle with the flat surface portion of the anvil that is sufficient to provide uniform downward flow of the metal along the angled surface portions. This permits movement of displaced metal within the metal sheet, minimizing disruption of the enameled coating of the sheet as a result of scoring. An apparatus for scoring an enameled sheet to form a line of weakness therein in accord with the above method.
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