| 摘要 |
PURPOSE:To obtain an extrusion cap made of plastics with metallic foil which is excellent in productivity without requiring insert molding and easily unsealed. CONSTITUTION:A tab 10 is formed as a unit at the bottom wall 9 face of an extrusion cylinder 7 or the inside wall face of the extrusion cylinder through a breakable weakened part 11 and the extrusion outlet 8 is covered with a metallic foil 13 having the function as a gas barrier and sticking to the surface of one side of the tab 10. In this way, the metallic foil can be stuck at the botton surface of the extrusion cylinder from the outside without interference with the tab and the picking-up part is thick and hence, easy to treat and open. |
