Parallax Technology, Inc.

We manufacture co2 lasers and co2 laser tubes .


Material properties/ Laser wattage

All information in the following table are compiled from published results at other web sites. We take no credit or responsibility for it.

Polyester sheet 0.005"- thick material/ 20 Watt The material was cut to the desired shape using 21W at 15 inches per second (15 ips) - no assist gas was used.
Hoover bags 100 W This application required the round hole in the base of a bag to be kiss-cut in such a way that other layers are not penetrated. The laser is ideal for this, and using a 100W laser, the holes were cut at 70"/s.
Speaker Membrane 25 W These membranes required wires of variable size to be run through. A fixed size hole is limiting, and does not rigidly supporting the cable. Therefore, putting three slits radiating outward from a point 125° to each other allows the wire to pass through and be supported. The cutting was achieved with a marking head for ease of integration, with 25W at 2"/s.
Styrofoam panels 50 W The request was to cut multiple layers of Styrofoam, each 3" thick. Only 50W was required at 20ipm to cut two layers. The material cut so easily that the shape of the beam was perfectly mirrored in the through-thickness cut geometry. Therefore a 2-3m focal length lens is needed to properly cut the samples with a reasonable cut width.
Velvet cloth 25 W The flexibility of this cloth is ideal for laser cutting. The cloth cuts with no discoloration or charring at 200ipm using a 25W laser.
Acrylic ¼" thick acrylic The cutting occurs as a result of material vaporization, and, with 100% laser absorption, even a 25 watt laser can cut 1" thick acrylic! Simply cutting acrylic is straightforward enough: just select the laser power for speed required. When the thickness increases, however, and a polished square edge is required, the set-up becomes more critical. The gas assist is key to achieving a polished edge. Air should be delivered to the material at a pressure that just enables the vaporized acrylic to be ejected through the cut, while not cooling the edge so much that frosting occurs. As a rough guide, a pressure of approximately 1-4 psi should be used, although this is totally related to the exit nozzle diameter and the stand-off distance from the nozzle to the material. Generally a nozzle diameter of around 1/8", positioned about the same distance above the acrylic, is recommended. This offers the user good tolerance on the gas pressure setting. When cutting material under 1/8" thick, the gas pressure will have to be systematically changed to the correct level. The edge should be consistent through the depth of the cut. With thicker material, finding the correct gas pressure is a little easier - initiate the cut with no gas pressure, and then increase the pressure until the topside flaming disappears. It must be noted that a perfect flame polished edge is not possible. The edge will have very slight vertical striations due to the periodic ejection of the vapor. Although decreasing the cut speed can eliminate these striations, micro cracking then occurs on the cut face. For material over 1/3" thick, defocusing into the material will help achieve the best edge square ness. As a note: because acrylic acts as a wave guide to CO2 radiation, a 2.5" lens can be used on 1" thick acrylic with reasonable results. This gives any cutting system a great range on thickness for a single set-up if a perfect cut is not necessary. Otherwise, for thicker material a 5" lens is generally recommended. Verbatim Synrad
Sandpaper 0.02" paper
100 W
Profile cutting of sandpaper is easily done with a CO2 laser, with little charring and no discoloration of the surface. 0.02" paper was cut with 100W at 1300ipm, using a nitrogen assist gas.
Alumina 90 W For a medical application, 0.0015-0.0025" diameter holes were required in 0.03" alumna plate. As the beam cannot be focused to such at spot with the necessary depth of focus, the hole diameter was accomplished by just breaking through the plate. The key factor in this application was the clear hole aperture, and not the larger top surface hole created by the flow through the plate. Using a burst of 19 pulses, the average break-through hole diameter size was 0.0022", achieved in 9.5ms, with only 90 watts of power.
Wood veneer 0.007" thick
50 W
0.007" thick veneer was cut using 50W, to achieve speeds of 340ft/min. No discoloration occurred, with low pressure nitrogen assist. This material can be either cut alone or trimmed on a part. Also, 0.02" thick maple veneer was cut with only 25W at 250ipm. There was no surface discoloration, with slight charring of the cut edge.
Foam boards 1" thick foam
125 W
Cutting foam boards for tool sets with a 125 watt sealed CO2 laser. The cut width of around 1/16" is an ideal placement tolerance for the tools - they can be firmly held in place, but remain easily accessible to the user. The material shows no discoloration or charring on the surface or the edge of the cut.
Although the final application was completed with a 125 watt laser at a speed of 65 inches per minute, through-cutting could be achieved with as little as 25 watts of laser power. The flexibility of the laser allows for different pattern cutouts for various foam depths.
Cellphone key pads 25 W Cut conditions were 23W, 1.8"/s, 200mm lens The as-received cell-phone keypad required the individual keys to be de-gated. The cuts were clean, with no significant burring or discoloration to the material.
Adhesive backed plastic 125 W High speed high resolution cuts with 125W up to 0.07" thick - only very slight melt back on plastic, no discoloration or charring.
Packaging PET 0.009"
50 W
Great application. No discoloration or charring, at speeds of 1000ipm with 50W. Use 4" lens as packaging was geometrically distorted.
Shoe inserts 100 W Foam backed felt, excellent cut quality, 150ipm with 100W.

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