Vertical Iridescent Stripes on the Trimmed Section |
 |
When the knife cuts through the material at an angle there ought to be no vertical stripes in the trimmed section, right? Such striping occurs nevertheless. Vertical striping is caused when the cutting material is incorrectly clamped.
When cutting paper the slight variations in height of the individual sheets accumulate to an increasing degree. These height variations may arise from ink, or they may be caused by the varying thicknesses of the paper sheets themselves.
When a pile of material that is to be cut is held by the clamp in the cutting machine the upper zones are compressed more than those that are lower. These upper zones are often subjected to an excessive clamping pressure, because the entire clamping area has theoretically become smaller.
| | |
| |
As a result, the precise deviation of the knife within the paper pile is increased. When you touch such a trimmed section, you will easily feel the wavy texture. Excessive clamping pressure and height variations will stress the knife anyway. In extreme cases the knife may break, because it tends to deflect away from excessively compressed zones by moving towards the front. Therefore, the first requirement is to always ensure that the correct clamping pressure is selected in order to prevent the knife from deflecting away from the excessive pressure area. POLAR provides automatic clamping pressure regulation.
The clamping pressure is fully automatica and correctly adjusted, depending upon the values preset for the respective material and cutting width. Large variations in height can be compensated for by placing a flexible medium between the cutting material and the clamp.
POLAR cutting machines* offer:
- infinitely adjustable clamping pressure: 150 - 7000daN*
- automatic clamping pressure regulation for accurate cutting
* Please compare the technical data relevant for the individual machine variants
|
|
|
|
|
|
|
|
|
 |
|
POLAR Cutting Tips
This series of POLAR Cutting Tips helps to increase the machine performance and its efficiency.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|