The computer (32) with, the cap (30) it penetrates completely this invention, in order one material conveying component (20) to penetrate completely because of this at least, the aperture adaptation (34) with, the aforementioned aperture (34) the film which is closed (40) with it regards the cap which is included in stationary state. The film (40), as the aperture (34) it expands, two tilt slant faces (45A and 45B) it possesses the main section which is decided, the far edge section (46A and 46B) possesses the respective tilt slant face. Two tilt slant faces (45A and 45B), when the film (40) being stationary state, it forms two face pieces, the far edge section of two tilt slant faces (46A and 46B) it is junction in the Tip of two face pieces. Two tilt slant faces of the film (45A and 45B) it is covered each two flaps (35A and 35B) by the cap (30), the aperture (34) two which is expanded flaps (35A and 35B) the film (40) making provision for the upper part at least, paralleling to the far edge section of the tilt slant face which corresponds, the free edge which extends (36A and 36B) it possesses the respective flap.< Choice figure >Drawing 3本発明は、本体(32)と、キャップ(30)を貫通し、これにより少なくとも1つの物質搬送部材(20)が貫通するように適合された開口(34)と、静止状態で前記開口(34)を閉じる膜(40)とを含むキャップに関する。膜(40)は、開口(34)に展開するとともに、2つの傾斜面(45A,45B)を定める主部を有し、それぞれの傾斜面は遠端部(46A,46B)を有する。2つの傾斜面(45A,45B)は、膜(40)が静止状態にあるときに二面体を形成し、2つの傾斜面の遠端部(46A,46B)は二面体の先端において接合している。キャップ(30)は、開口(34)に展開する少なくとも2つのフラップ(35A,35B)を膜(40)の上方に備え、膜の2つの傾斜面(45A,45B)は各々2つのフラップ(35A,35B)により覆われ、それぞれのフラップは、対応する傾斜面の遠端部に沿って延びる自由端(36A,36B)を有する。【選択図】図3
