TheLR4 is a machine equipped with a CO2 laser, which emits a pre-set wavelength beam of infrared light. An optical system focuses the beam on a small surface area of the material. The heat generated by the laser sublimates the material, thus creating small holes invisible to the naked eye. The diameter of the holes is adjusted by innovative 4.0 software that establishes the force of the beam on the material, which rotates at a constant speed. The laser unit is then capable of drilling materials with different strengths and thicknesses. It also works on materials made of several layers.

Changing the size of the holes alters the exchange of atmospheric gas between the packaged product and the external environment. Finding the right balance ensures a longer shelf life for fresh product. Software controls the laser pulses. At high frequencies, the laser works continuously while at lower frequencies it creates holes at a predetermined distance. The control system is supported by an encoder and a trigger system.

This means that the software can vary the size of the holes and the distance between them, thus adapting to different materials and requirements. Using the laser with calibrated power, it is possible to weaken the material deeply, reducing the thickness without perforating it, on the direction of the tape. This process is called laser scoring and creates easy opening tears that help the end user. Laserpin is investing in research and development to find better and better solutions for the latest developments in the industry.