| 摘要 |
<p>Printed material (P) in form of single sheets (20) or groups of sheets is converted into a sealed parcel ready for mailing by glueing along all the perimetral edges (I,II,III,IV) of the cover or parcel of sheets, in which a folding operation has been possibly previously carried out in order to take the sizes of a normal envelope for mailing. <IMAGE></p> |
