| 摘要 |
PURPOSE: To guarantee safety in the extraction of a blade by providing tabs and side skirts. CONSTITUTION: Tabs 12 and 13 are produced transparent from synthetic plastic materials just like series of injection molding accompanied with a common mutual connecting hinge 14, the hinge 14 is formed from plastic materials at a section made thin along with a direction across breadthwise direction, and the tabs 12 and 13 are made semi-flexible. The tabs 12 and 13 are groove-shaped members and have a web 15 formed integrally with upright side edges 16 and 17. The respective upright side skirts 16 and 17 are formed along with respective lengthwise edges and parallelly formed away from the hinge 14 to a neck part 18 while gradually reducing the height toward the hinge 14. At the terminal part away from the hinge 14, the upside tab 12 is integrally provided with a lateral extension bonding means, and this lateral extension bonding means is arranged inside the shape of a terminal wall 22 at an interval from the wall 22 and a compression bar 23 to the inside. Thus, necessity for a human finger to touch the blade during blade extraction can be avoided. |
