| 摘要 |
<p>Tamper-proof bags (11) of cards (12) enveloped individually in sequence in a continuous plastic film consist of two layers of plastic film with a card in between and sealed longitudinally and transverse. For each card the two layers (18, 19) of sealed film make angles of the bag with a profile that conventionally joins the longitudinal. seal with the corresponding transverse seal to form a non-right angle corner of the envelope. A production machine for bagging using this seal is also described.</p> |
