| 摘要 |
The hermetically sealing pocket comprises an under-film (1) coated with an adhesive layer (2) and a second under-film (4), which are stuck together on three sides forming a U-shaped zone (7). The two films are of a sealing material so that the pocket is entirely sealed after closing. There is a central rectangular part (5) and a fourth non-adhered side (6), formed by the interposition of a protective sheet (3) treated to adhere in a reduced way, in order to constitute an open pocket.The protective sheet has several cut lines (8,8') on the pocket open side in order to allow several successive hermetic closings after withdrawing the corresponding part (9,9') of the protective sheet. From the second utilisation after opening the pocket a cut (11) is made between the previously used closing cutting line (8) and the following cutting line (8'). |
