Action Laser’s patented Nd-YAG laser perforating process uses focused laser energy to drill millions of small holes in metal sheet, creating a “LaserScreen”. Each hole is drilled [vaporized] with a single pulse of the laser beam.
Circular hole apertures or slot-shaped apertures [approximate 1 mm length] are standard.
Apertures are tapered.
The aperture diameter or width on the “back” side of the LaserScreen is typically 1.5 to 2.5 larger than the aperture size on the “working face”.
Due to this feature LaserScreens are highly resistant to clogging or blockage in filtration applicationa.
Working Face surface is smooth.
The smooth surface and sharp edged apertures give benefits in surface flow and particle size “cut”.
Hole Size Vs Screen Thickness Vs % Open Area.
There are limits to the combinations of these three screen characteristics. See next pages on Hole Diameter and Slot Width.
[Screen Thickness / Aperture Diameter or Width].
LaserScreens can be produced with an Aspect Ratio of up to 10:1 for circular holes or up to 5:1 for slots. Due to this feature LaserScreens are very strong and robust for the aperture size.
The maximum aspect Ratio for mechanically punched sheet is only 1:1.
[Area of Holes / Area of Sheet].
Open Area is a measure of “hole density” and is calculated based on the hole size on the Working Face of the LaserScreen.
LaserScreens can be manufactured with any percentage Open Area up to a maximum limit. This limit is determined when the edges of the apertures on the back side [non-working face] will be in danger of touching.