| 摘要 |
<p>The prefabricated strip of material in "endless" form contains at least two webs (2, 3) provided with perforations (5, 11), lateral edge strips with tractor-feed perforations (4) and adhesion lines (7, 8), which webs subsequently form the outer covers and the clamping region on a folder. With the aid of the tractor feed perforations (4), the strip of material can be fed through a printing station and printed in the sections corresponding to the length of the folder. Pockets or the like can be formed in the folder by means of additional webs. Sections of the strip of material separated at transverse perforations (11) are folded along fold lines (6) to form, in each case, a complete folder. <IMAGE></p> |
