Graphica Reverse Bend Matrix

What substrates can we crease?

We can crease any substrate

  • Paper
  • Folding Box Board
  • Corrugated
  • Litho Laminated

Perfect solution for reverse crease, e. g. accordion folding, cutting from the reverse side; in corrugated board converting with cutting from the reverse side in inline machines.

The special locator centres the reverse crease exactly between the creasing rules; thus the crease and reverse crease are of the same quality.

Function
The perfect solution for premium reverse crease how it is often used for inline cutting of corrugated board. Example: cutting from the reverse side of Leporellos.
Due to the specially developed transfer profile for variable distances of creasing rules the correct creasing parameters can be used. Result: Crease and reverse crease in convincing top quality.

Calculation of Reverse Crease
distance of creasing rules:

d = (g x 1.5) + c (for solid board)
d = (g x 2.0) + c (for corrugated board)
creasing rule height:
h = f – (g + a)

transfer profile for variable distances of creasing rules

Legend:
a = base height of reverse crease
b = nib height of reverse crease
c = nib width of reverse crease
d = distance of creasing rules
e = width of reverse crease
f = cutting rule height (23.8 mm)
g = thickness of material *
* in the case of corrugated board
= compressed material thickness

h = creasing rule height

We recommend using the creasing rules reversed in the cutting die.

 

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