| 摘要 |
<p>PURPOSE: To prevent a cobwebbing or whitening of a resin material from generating on the external protective layer side, and at the same time, facilitate the peeling off of a tab tape, and keep the appearance of a tap part neat even after the peeling off by providing a strong resin layer which does not follow the peeling off of the tap tape as an internal layer of a window-closing film. CONSTITUTION: A window-closing film 13 is a laminate film consisting of a plural kinds of resin materials, and has a layer structure wherein a sealing layer 14, a strong resin layer 15 which becomes a core of the window-closing film 13 and a sealing layer 16 are laminated from a container main body side. Also, the strong resin layer 15 consists of a polyester film, has a hardness by which the resin layer 15 does not follow a peeling off of a tap tape 6 and remains on a base material 2 side. The strong resin layer 15 is provided in such a manner that the peeling may generate at a layer which is higher than the resin layer 15 at the time of peeling off of the tab tape 6. Therefore, the peeling off of the tab tape 6 can be correctly performed, and a resin surface (sealing layer 17) around the window-closing film 13 is not pulled, and the appearance of a tap part is not spoiled.</p> |
