| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to execute a high frequency working even onto a stock material having a low permittivity and to three-dimensionally form an expression part such as characters, patterns, time numerals or the like. SOLUTION: When high frequency is applied from a decorative film 2 side under the state that a base film 3 having a high permittivity is arranged onto the under surface of the decorative film 2 having a low permittivity, the base film 3 having the high permittivity, which is arranged on the under surface of the decorative film having the low permittivity, absorbs the high frequency voltage. The high frequency energy absorbed by the base film 3 having the high permittivity turns to heat energy. Since this heat energy is transmitted to the decorative film 2 having the low permittivity, this decorative film 2 is indirectly high-frequency worked, resulting in three-dimensionally forming an expression part 7 such as characters, patterns, time numerals or the like on the decorative film 2 having the low permittivity. |
