(57) A method for making packaging of unlimited length, the corresponding equipment and
continuous strip of corrugated cardboard packaging thus obtained.
This consists of a method by means of which a longitudinal slit (13) is made along
the whole length of a roll or coil of corrugated cardboard (1) enabling it to be folded
after separating a portion from the roll of suitable length, and possibly some cuts
and cutting lines; the device for producing the slit or groove consists of a pulling
item made up, for example, of two adjacent rollers (2,3) in line and the actual slit
(13) itself is made by the pressure of rings (9) laid out in a fixed or moveable fashion
on a roller (8) aligned with another (7) which is used to support this, with cutter
holding rollers when cuts and cutting lines have to be made, as well as the corresponding
means for length control between cutting cycles. The continuous packing strip has
longitudinal slots, and can have transverse cutting lines and longitudinal cuts in
both directions starting from said cutting lines.
For application in handling rolls for forming boxes or packing.
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