Editing Perforation (section)

===Laser perforation===
[[Laser cutting]] can place many precise holes in a web. Laser perforations look similar in many respects to hot needle perforations. However, laser systems are expensive. The big advantage of laser perforation is the consistency of the hole size, compared to mechanical perforation. This is very important in [[Modified atmosphere|modified atmosphere packaging]] for fresh produce. The laser perforation is often carried out on [[roll slitting]] machines (slitter rewinder) as the printed material is slit down to the finished roll size.