| 摘要 |
<p>Closing and opening device for a thin-film packaging packet or bag in which the free edges of the envelope forming the packet or bag are brought together in order to form a bag head, and are then folded down or folded over. The non-heat-welded fold or folds (p) of the head of the packet or bag (S) are held by a label (20) affixed to the packet or bag (S') so as to straddle the said fold or folds (p), the face of the label (20) in contact with the bag (S') being equipped with a permanent adhesive which is absent or is masked in a zone where a pre-cut-out tab (32), intended to separate the label into two distinct portions, is provided, the said tab being integral with the rest of the label as long as the packet or bag (S') has not been opened for the first time. <IMAGE></p> |
