| 摘要 |
PURPOSE:To attain a simple and automatic method of production of a floppy disk jacket and to simplify the constitution of a device as well as to improve the product quality, by forming previously sealing holes to a liner film and performing the thermal sealing via these sealing holes when a jacket is assembled. CONSTITUTION:Plural sealing holes 4 are formed with fixed intervals to a liner film 1 by a punch 3, and the film 1 is sent to a thermal sealing device 5 and put approximately on the center of a cover film 2. Then the film 1 is adhered with heat to the film 2. These adhered films 1 and 2 are sent to a blanking device 6, and a part 11 is blanked among the areas protruded from both sides of the film 1. Then the film is cut in a prescribed length by a cutter 7 and blanked into a jacket piece 10. |
